About Pressure Transmitters
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About Air Preparation
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About Pressure Gauges
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High-Pressure Differential Gauges

These gauges are able to withstand line pressures up to 3,000 psi. They are commonly used to measure pressure differences in pumps and filters.
Gauges with 316 stainless steel case are more corrosion resistant than gauges with an aluminum case.
- For Use With: Water, Hydraulic Fluid, and Gasoline
- Accuracy: ±2% Full Scale (Not Graded)
Available Pressure Ranges | ||
---|---|---|
Pressure Range, psi | Graduation Marks, psi | Numeric Increments, psi |
2 1/2" Dial Diameter | ||
0 to 50 | 2.5 | 10 |
4 1/2" Dial Diameter | ||
0 to 50 | 2.5 | 10 |
- For Use With: Water, Hydraulic Fluid, and Gasoline
- Accuracy: ±2% Full Scale (Not Graded)
Available Pressure Ranges | ||
---|---|---|
Pressure Range, psi | Graduation Marks, psi | Numeric Increments, psi |
2 1/2" Dial Diameter | ||
0 to 50 | 2.5 | 10 |
4 1/2" Dial Diameter | ||
0 to 50 | 2.5 | 10 |
Pressure Transmitters


M12 Plug
Connection



Plug
Connection

Deutsch-Style
Plug Connection
Remotely monitor pressure in general purpose applications such as pumping and compressing systems. These transmitters, also known as transducers, convert pressure to an electrical signal that can be interpreted by receiving devices, such as remote displays, programmable logic controllers, and motor speed controls. For your receiving device to interpret the signal from the transmitter, you will need to calibrate it for the transmitter's pressure range and output signal. As pressure increases, the output signal from the transmitter will increase. Transmitters will only provide accurate readings within the rated pressure range.
Transmitters with current output connect using two wires. The same wire is used to send a signal to the receiver and to power the transmitter. Current doesn’t lose signal over long distances and isn’t affected by electrical interference from other devices.
Transmitters with voltage output connect using three wires—two wires into the power supply and a separate wire that sends a signal to the receiver. The receiver and the transmitter share a common ground wire back to the power supply.
Transmitters with calibration certificate traceable to NIST include documentation that states they've passed a test for accuracy.
Transmitters are rated NEMA 4X and IP65 or IP67 and are good for washdown and corrosive environments.
Transmitters with a micro M12 plug connection are compatible with micro M12 connectors.
- For Use With: Air, Argon, Diesel Fuel, Gasoline, Hydraulic Fluid, Nitrogen, Water
- Accuracy:
0-15 psi Pressure Range: ±1.5%
All Other Pressure Ranges: ±1% - Pipe Connection: NPT Male
- Housing Material: Glass-Reinforced Nylon
- Connection Material:
0-15 psi Pressure Range: 316L Stainless Steel
All Other Pressure Ranges: 304 Stainless Steel - Temperature Range: -40° to 255° F
Pressure Range, psi | Maximum Continuous Pressure, psi | Maximum Short-Term Pressure, psi | Input Voltage | Pipe Size | Ht. | Wd. | Environmental Rating | Each | |
0-50 | 50 | 100 | 9-36V DC | 1/4 | 1 15/16" | 15/16" | IP67, NEMA 4X | 00000000 | 0000000 |
- For Use With: Air, Argon, Diesel Fuel, Gasoline, Hydraulic Fluid, Nitrogen, Water
- Accuracy:
0-15 psi Pressure Range: ±1.5%
All Other Pressure Ranges: ±1% - Pipe Connection: NPT Male
- Housing Material: Glass-Reinforced Nylon
- Connection Material:
0-15 psi Pressure Range: 316L Stainless Steel
All Other Pressure Ranges: 304 Stainless Steel - Temperature Range: -40° to 255° F
Pressure Range, psi | Maximum Continuous Pressure, psi | Maximum Short-Term Pressure, psi | Input Voltage | Pipe Size | Ht. | Wd. | Environmental Rating | Each | |
0-50 | 50 | 100 | 9-36V DC | 1/4 | 1 11/16" | 15/16" | IP67, NEMA 4X | 00000000 | 0000000 |
- For Use With: Air, Argon, Diesel Fuel, Gasoline, Hydraulic Fluid, Nitrogen, Water
- Accuracy: ±1%
- Pipe Connection: NPT Male
- Housing Material: Glass-Reinforced Nylon
- Connection Material: 304 Stainless Steel
- Temperature Range: -40° to 255° F
Pressure Range, psi | Maximum Continuous Pressure, psi | Maximum Short-Term Pressure, psi | Input Voltage | Pipe Size | Electrical Connection Thread Size | Ht. | Wd. | Environmental Rating | Each | |
0-50 | 50 | 100 | 9-36V DC | 1/4 | PG-9 | 3 7/16" | 1 5/16" | IP65, NEMA 4X | 00000000 | 0000000 |
- For Use With: Air, Argon, Diesel Fuel, Gasoline, Hydraulic Fluid, Nitrogen, Water
- Accuracy:
0-15 psi Pressure Range: ±1.5%
All Other Pressure Ranges: ±1% - Pipe Connection: NPT Male
- Housing Material: Glass-Reinforced Nylon
- Connection Material:
0-15 psi Pressure Range: 316L Stainless Steel
All Other Pressure Ranges: 304 Stainless Steel - Temperature Range: -40° to 255° F
Pressure Range, psi | Maximum Continuous Pressure, psi | Maximum Short-Term Pressure, psi | Input Voltage | Pipe Size | Electrical Connection Thread Size | Ht. | Wd. | Environmental Rating | Each | |
Transmitters | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
0-50 | 50 | 100 | 9-36V DC | 1/8 | PG-7 | 2 5/8" | 1 3/8" | IP65, NEMA 4X | 00000000 | 0000000 |
0-50 | 50 | 100 | 9-36V DC | 1/4 | PG-7 | 2 5/8" | 1 3/8" | IP65, NEMA 4X | 0000000 | 000000 |
Transmitters with Calibration Certificate Traceable to NIST | ||||||||||
0-50 | 50 | 100 | 9-36V DC | 1/4 | PG-7 | 2 5/8" | 1 3/8" | IP65, NEMA 4X | 0000000 | 000000 |
- For Use With: Air, Argon, Diesel Fuel, Gasoline, Hydraulic Fluid, Nitrogen, Water
- Accuracy: ±1.0%
- Pipe Connection: NPT Male
- Housing Material: Glass-Reinforced Nylon
- Connection Material: 304 Stainless Steel
- Temperature Range: -40° to 255° F
Pressure Range, psi | Maximum Continuous Pressure, psi | Maximum Short-Term Pressure, psi | Input Voltage | Pipe Size | Ht. | Wd. | Environmental Rating | Each | |
0-50 | 50 | 100 | 9-36V DC | 1/4 | 2 1/16" | 1 1/16" | IP67, NEMA 4X | 00000000 | 0000000 |
- For Use With: Air, Argon, Diesel Fuel, Gasoline, Hydraulic Fluid, Nitrogen, Water
- Accuracy: ±1.0%
- Pipe Connection: NPT Male
- Housing Material: Glass-Reinforced Nylon
- Connection Material: 304 Stainless Steel
- Temperature Range: -40° to 255° F
Pressure Range, psi | Maximum Continuous Pressure, psi | Maximum Short-Term Pressure, psi | Input Voltage | Pipe Size | Ht. | Wd. | Environmental Rating | Each | |
0-50 | 50 | 100 | 9-36V DC | 1/4 | 2 1/16" | 1 1/16" | IP67, NEMA 4X | 00000000 | 0000000 |
- For Use With: Air, Argon, Diesel Fuel, Gasoline, Hydraulic Fluid, Nitrogen, Water
- Accuracy:
0-15 psi Pressure Range: ±1.5%
All Other Pressure Ranges: ±1% - Pipe Connection: NPT Male
- Housing Material: Glass-Reinforced Nylon
- Connection Material:
0-15 psi Pressure Range: 316L Stainless Steel
All Other Pressure Ranges: 304 Stainless Steel - Temperature Range: -40° to 255° F
Pressure Range, psi | Maximum Continuous Pressure, psi | Maximum Short-Term Pressure, psi | Input Voltage | Pipe Size | Ht. | Wd. | Environmental Rating | Each | |
0-50 | 50 | 100 | 9-36V DC | 1/4 | 1 15/16" | 15/16" | IP67, NEMA 4X | 00000000 | 0000000 |
- For Use With: Air, Argon, Diesel Fuel, Gasoline, Hydraulic Fluid, Nitrogen, Water
- Accuracy:
0-15 psi Pressure Range: ±1.5%
All Other Pressure Ranges: ±1% - Pipe Connection: NPT Male
- Housing Material: Glass-Reinforced Nylon
- Connection Material:
0-15 psi Pressure Range: 316L Stainless Steel
All Other Pressure Ranges: 304 Stainless Steel - Temperature Range: -40° to 255° F
Pressure Range, psi | Maximum Continuous Pressure, psi | Maximum Short-Term Pressure, psi | Input Voltage | Pipe Size | Ht. | Wd. | Environmental Rating | Each | |
0-50 | 50 | 100 | 9-36V DC | 1/4 | 1 15/16" | 15/16" | IP67, NEMA 4X | 00000000 | 0000000 |
- For Use With: Air, Argon, Diesel Fuel, Gasoline, Hydraulic Fluid, Nitrogen, Water
- Accuracy:
0-15 psi Pressure Range: ±1.5%
All Other Pressure Ranges: ±1% - Pipe Connection: NPT Male
- Housing Material: Glass-Reinforced Nylon
- Connection Material:
0-15 psi Pressure Range: 316L Stainless Steel
All Other Pressure Ranges: 304 Stainless Steel - Temperature Range: -40° to 255° F
Pressure Range, psi | Maximum Continuous Pressure, psi | Maximum Short-Term Pressure, psi | Input Voltage | Pipe Size | Ht. | Wd. | Environmental Rating | Each | |
0-50 | 50 | 100 | 9-36V DC | 1/4 | 1 11/16" | 7/8" | IP67, NEMA 4X | 00000000 | 0000000 |
- For Use With: Air, Argon, Diesel Fuel, Gasoline, Hydraulic Fluid, Nitrogen, Water
- Accuracy: ±1%
- Pipe Connection: NPT Male
- Housing Material: Glass-Reinforced Nylon
- Connection Material: 304 Stainless Steel
- Temperature Range: -40° to 255° F
Pressure Range, psi | Maximum Continuous Pressure, psi | Maximum Short-Term Pressure, psi | Input Voltage | Pipe Size | Electrical Connection Thread Size | Ht. | Wd. | Environmental Rating | Each | |
0-50 | 50 | 100 | 9-36V DC | 1/4 | PG-9 | 3 7/16" | 1 5/16" | IP65, NEMA 4X | 00000000 | 0000000 |
- For Use With: Air, Argon, Diesel Fuel, Gasoline, Hydraulic Fluid, Nitrogen, Water
- Accuracy:
0-15 psi Pressure Range: ±1.5%
All Other Pressure Ranges: ±1% - Pipe Connection: NPT Male
- Housing Material: Glass-Reinforced Nylon
- Connection Material:
0-15 psi Pressure Range: 316L Stainless Steel
All Other Pressure Ranges: 304 Stainless Steel - Temperature Range: -40° to 255° F
Pressure Range, psi | Maximum Continuous Pressure, psi | Maximum Short-Term Pressure, psi | Input Voltage | Pipe Size | Electrical Connection Thread Size | Ht. | Wd. | Environmental Rating | Each | |
0-50 | 50 | 100 | 9-36V DC | 1/4 | PG-7 | 2 5/8" | 1 3/8" | IP65, NEMA 4X | 00000000 | 0000000 |
- For Use With: Air, Argon, Diesel Fuel, Gasoline, Hydraulic Fluid, Nitrogen, Water
- Accuracy:
0-15 psi Pressure Range: ±1.5%
All Other Pressure Ranges: ±1% - Pipe Connection: NPT Male
- Housing Material: Glass-Reinforced Nylon
- Connection Material:
0-15 psi Pressure Range: 316L Stainless Steel
All Other Pressure Ranges: 304 Stainless Steel - Temperature Range: -40° to 255° F
Pressure Range, psi | Maximum Continuous Pressure, psi | Maximum Short-Term Pressure, psi | Input Voltage | Pipe Size | Ht. | Wd. | Environmental Rating | Each | |
0-50 | 50 | 100 | 14-36V DC | 1/4 | 1 15/16" | 15/16" | IP67, NEMA 4X | 00000000 | 0000000 |
- For Use With: Air, Argon, Diesel Fuel, Gasoline, Hydraulic Fluid, Nitrogen, Water
- Accuracy:
0-15 psi Pressure Range: ±1.5%
All Other Pressure Ranges: ±1% - Pipe Connection: NPT Male
- Housing Material: Glass-Reinforced Nylon
- Connection Material:
0-15 psi Pressure Range: 316L Stainless Steel
All Other Pressure Ranges: 304 Stainless Steel - Temperature Range: -40° to 255° F
Pressure Range, psi | Maximum Continuous Pressure, psi | Maximum Short-Term Pressure, psi | Input Voltage | Pipe Size | Ht. | Wd. | Environmental Rating | Each | |
0-50 | 50 | 100 | 14-36V DC | 1/4 | 1 11/16" | 15/16" | IP67, NEMA 4X | 00000000 | 0000000 |
- For Use With: Air, Argon, Diesel Fuel, Gasoline, Hydraulic Fluid, Nitrogen, Water
- Accuracy: ±1%
- Pipe Connection: NPT Male
- Housing Material: Glass-Reinforced Nylon
- Connection Material: 304 Stainless Steel
- Temperature Range: -40° to 255° F
Pressure Range, psi | Maximum Continuous Pressure, psi | Maximum Short-Term Pressure, psi | Input Voltage | Pipe Size | Electrical Connection Thread Size | Ht. | Wd. | Environmental Rating | Each | |
0-50 | 50 | 100 | 14-36V DC | 1/4 | PG-9 | 3 7/16" | 1 5/16" | IP65, NEMA 4X | 00000000 | 0000000 |
- For Use With: Air, Argon, Diesel Fuel, Gasoline, Hydraulic Fluid, Nitrogen, Water
- Accuracy:
0-15 psi Pressure Range: ±1.5%
All Other Pressure Ranges: ±1% - Pipe Connection: NPT Male
- Housing Material: Glass-Reinforced Nylon
- Connection Material:
0-15 psi Pressure Range: 316L Stainless Steel
All Other Pressure Ranges: 304 Stainless Steel - Temperature Range: -40° to 255° F
Pressure Range, psi | Maximum Continuous Pressure, psi | Maximum Short-Term Pressure, psi | Input Voltage | Pipe Size | Electrical Connection Thread Size | Ht. | Wd. | Environmental Rating | Each | |
Transmitters | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
0-50 | 50 | 100 | 14-36V DC | 1/4 | PG-7 | 2 5/8" | 1 3/8" | IP65, NEMA 4X | 00000000 | 0000000 |
Transmitters with Calibration Certificate Traceable to NIST | ||||||||||
0-50 | 50 | 100 | 14-36V DC | 1/4 | PG-7 | 2 5/8" | 1 3/8" | IP65, NEMA 4X | 0000000 | 000000 |
High-Accuracy Pressure Transmitters

- For Use With: Air, Argon, Diesel Fuel, Gasoline, Hydraulic Fluid, Nitrogen, Water
- Accuracy: See table
- Pipe Connection: NPT Male
- Housing Material: 304 Stainless Steel
- Connection Material: 17-4 PH Stainless Steel
- Temperature Range: See table
At least four times as accurate as standard pressure transmitters, these transmitters are ideal for use in laboratories and analytical testing applications. All come with a calibration certificate traceable to NIST that states they’ve passed a test for accuracy. Also known as transducers, pressure transmitters convert pressure to an electrical signal that can be interpreted by receiving devices, such as remote displays, programmable logic controllers, and motor speed controls to monitor pressure or control equipment. As pressure increases, the output signal from the transmitter will increase. For your receiving device to interpret the signal from the transmitter, you will need to calibrate it for the transmitter's pressure range and output signal. Transmitters will only provide accurate readings within the rated pressure range.
These transmitters connect using two wires to send a 4-20mA current output. The same wire is used to send a signal to the receiver and to power the transmitter. Current doesn’t lose signal over long distances and isn’t affected by electrical interference from other devices.
All transmitters are CE marked, meaning they meet European safety standards. NEMA 4X rated transmitters are for use in washdown and corrosive environments. IP67 rated transmitters are protected from temporary submersion during washdowns.
Transmitters with Calibration Certificate Traceable to NIST | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Pressure Range, psi | Maximum Continuous Pressure, psi | Maximum Short-Term Pressure, psi | Input Voltage | Pipe Size | Ht. | Wd. | Temperature Range, °F | Environmental Rating | Each | |
4-20mA Current Output—Wire Leads | ||||||||||
±0.25% Accuracy | ||||||||||
0-25 | 25 | 50 | 9-30V DC | 1/4 | 2 1/8" | 1" | -40° to 255° | IP67, NEMA 4X | 0000000 | 0000000 |
0-50 | 50 | 100 | 9-30V DC | 1/4 | 2 1/8" | 1" | -40° to 255° | IP67, NEMA 4X | 0000000 | 000000 |
Absolute Pressure Transmitters
Monitor and control pressure in portable HVAC systems, hydraulics, and oil and gas equipment. Unlike other pressure transmitters that measure the difference between your system and the atmosphere, these transmitters give measurements relative to zero pressure—regardless of altitude or temperature. Also known as transducers, they convert pressure into an electrical signal that can be interpreted by receiving devices, such as remote displays, programmable logic controllers (PLCs), and motor speed controls. For your receiving device to interpret the signal from the transmitter, you will need to calibrate it for the transmitter's pressure range and output signal. Transmitters will only provide accurate readings within the rated pressure range.
All transmitters are rated IP67 for protection from dust and temporary submersion during washdowns. Those that are rated NEMA 4X also protect against weather and corrosion.
Transmitters with current output connect using two wires. The same wire is used to send a signal to the receiver and to power the transmitter. Current doesn’t lose signal over long distances and isn’t affected by electrical interference from other devices.

- For Use With: Air, Argon, Diesel Fuel, Gasoline, Hydraulic Fluid, Nitrogen, Water
- Accuracy: ±1.5%
- Pipe Connection: NPT Male
- Housing Material: Glass-Reinforced Nylon
- Connection Material: 316L Stainless Steel
- Temperature Range: -40° to 255° F
Pressure Range, psi | Maximum Continuous Pressure, psi | Maximum Short-Term Pressure, psi | Input Voltage | Pipe Size | Ht. | Wd. | Environmental Rating | Each | |
0-50 | 100 | 100 | 9-36V DC | 1/4 | 1 15/16" | 15/16" | IP67, NEMA 4X | 0000000 | 0000000 |
Economy Pressure Transmitters

- For Use With: Air, Argon, Diesel Fuel, Hydraulic Fluid, Nitrogen, Water
- Accuracy: ±1.5%
- Pipe Connection: NPT Male
- Housing Material: 304 Stainless Steel
- Connection Material: 304 Stainless Steel
- Temperature Range: -20° to 220° F
Choose these transmitters when you need reliable pressure monitoring but not high accuracy. Also known as transducers, they convert pressure to an electrical signal that can be interpreted by receiving devices, such as remote displays, programmable logic controllers, and motor speed controls. For your receiving device to interpret the signal from the transmitter, you will need to calibrate it for the transmitter's pressure range and output signal. As pressure increases, the output signal from the transmitter will increase. Transmitters will only provide accurate readings within the rated pressure range.
Rated IP65, all seal out dust and water from light rinses. They’re CE marked, so they meet European safety standards.
These transmitters connect using two wires to send a 4-20mA current output. The same wire is used to send a signal to the receiver and to power the transmitter. Current doesn’t lose signal over long distances and isn’t affected by electrical interference from other devices.
Pressure Range, psi | Maximum Continuous Pressure, psi | Maximum Short-Term Pressure, psi | Input Voltage | Pipe Size | Ht. | Wd. | Environmental Rating | Each | |
4-20mA Current Output—Wire Leads | |||||||||
---|---|---|---|---|---|---|---|---|---|
0-50 | 50 | 75 | 12-36V DC | 1/4 | 1 13/16" | 15/16" | IP65 | 0000000 | 0000000 |
Sanitary Pressure Transmitters

- For Use With: Air, Argon, Diesel Fuel, Gasoline, Hydraulic Fluid, Nitrogen, Water
- Accuracy: ±0.5%
- Housing Material: 304 Stainless Steel
- Connection Material: 316 Stainless Steel
- Temperature Range: 30° to 300° F
For use in sanitary applications such as food processing, these transmitters are 3-A certified. They are rated IP66, IP69K, and NEMA 4X to resist washdowns and corrosion. Also known as transducers, they convert pressure to an electrical signal that can be interpreted by receiving devices, such as remote displays, programmable logic controllers, and motor speed controls to monitor pressure or control equipment. As pressure increases, the output signal from the transmitter will increase. For your receiving device to interpret the signal from the transmitter, you will need to calibrate it for the transmitter's pressure range and output signal. Transmitters are accurate only within the pressure range.
These transmitters connect using two wires to send a 4-20mA current output. The same wire is used to send a signal to the receiver and to power the transmitter. Current doesn’t lose signal over long distances and isn’t affected by electrical interference from other devices. Transmitters are compatible with micro M12 sockets.
Pressure Range, psi | Maximum Continuous Pressure, psi | Maximum Short-Term Pressure, psi | Input Voltage | Ht. | Wd. | Environmental Rating | Specifications Met | Each | |
For 1 1/2" Flange OD | |||||||||
---|---|---|---|---|---|---|---|---|---|
4-20mA Current Output—5-Pole Micro M12 Plug Connection | |||||||||
0-50 | 50 | 100 | 10-40V DC | 2 5/16" | 2 7/16" | IP66, IP69K, NEMA 4X | 3-A Certified 74-06, CE Marked | 00000000 | 0000000 |
For 2" Flange OD | |||||||||
4-20mA Current Output—5-Pole Micro M12 Plug Connection | |||||||||
0-50 | 50 | 100 | 10-40V DC | 2 5/16" | 2 7/16" | IP66, IP69K, NEMA 4X | 3-A Certified 74-06, CE Marked | 00000000 | 000000 |
Differential Pressure Transmitters with Dial Indicator for Liquids

- For Use With: Diesel Fuel, Gasoline, Hydraulic Fluid, Water
- Accuracy: ±2%
- Pipe Connection: NPT Female
- Housing Material: Brass
- Connection Material: Brass
- Temperature Range: -20° to 200° F
View readings at the source with the dial indicator or remotely using a receiver—these transmitters measure the difference in pressure between two inputs in liquid applications. The dial indicator operates independently of the transmitter and shows differential pressure in real time for troubleshooting. Also known as transducers, these transmitters convert pressure to an electrical signal that is interpreted by receiving devices, such as remote displays, programmable logic controllers, and motor speed controls. You’ll sometimes see them used to indicate a filter is clogged in a pump or cooling system. Rated NEMA 4X, these transmitters protect against dirt, washdown, and corrosion. They are also rated IP65 for protection from dust and rinsing. All are CSA certified, so they meet Canadian safety standards.
For your receiving device to interpret the signal from the transmitter, you will need to calibrate it for the transmitter's differential pressure range and output signal. As differential pressure increases, the output signal from the transmitter will increase. Transmitters will only provide accurate readings within the rated pressure range. Connect them using two wires. The same wire is used to send a signal to the receiver and to power the transmitter. Current doesn’t lose signal over long distances and isn’t affected by electrical interference from other devices.
Mounting Holes | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Differential Pressure Range | Max. Input Pressure, psi | Input Voltage | Pipe Size | Mounting Hardware Included | Dia. | No. of | Ht. | Wd. | Environmental Rating | Each | |
4-20 mA, 0-5V DC Output Signal—Screw Terminals | |||||||||||
0-50 psi | 5,000 | 9-35V DC | 1/4 | No | 3/16" | 2 | 2 5/8" | 2 15/16" | IP65; NEC Class I Division 2 Groups A, B, C, D; NEC Class II Divisions 1, 2 Groups F, G; NEMA 4X | 0000000 | 0000000 |
Differential Pressure Transmitters for Liquids
Used with pumps, cooling systems, and other liquid applications, these transmitters remotely measure the difference in pressure between two inputs. They are also known as transducers. These transmitters convert differential pressure to an electrical signal that can be interpreted by receiving devices, such as remote displays, programmable logic controllers, and motor speed controls to monitor pressure or control equipment. You’ll often see them used to indicate a filter is clogged.
For your receiving device to interpret the signal from the transmitter, you will need to calibrate it for the transmitter's differential pressure range and output signal. Transmitters will only provide accurate readings within the rated pressure range. Connect them using two wires. The same wire is used to send a signal to the receiver and to power the transmitter. Current doesn’t lose signal over long distances and isn’t affected by electrical interference from other devices.
IP66 rated transmitters are dust tight and protect against washdowns. NEMA 4X rated transmitters protect against weather, washdowns, and corrosion.

- For Use With: Diesel Fuel, Gasoline, Hydraulic Fluid, Water
- Accuracy: ±0.5%
- Pipe Connection: NPT Female
- Connection Material: 316 Stainless Steel
- Temperature Range: 0° to 200° F
Mounting Holes | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Differential Pressure Range , psi | Max. Input Pressure, psi | Input Voltage | Pipe Size | Mounting Hardware Included | Dia. | No. of | Ht. | Wd. | Environmental Rating | Each | |
4-20 mA Output Signal—Screw Terminals | |||||||||||
0-5 | 50 | 10-35V DC | 1/4 | No | 1/4" | 2 | 2" | 1 7/16" | IP66, NEMA 4X | 0000000 | 0000000 |
0-10 | 50 | 10-35V DC | 1/4 | No | 1/4" | 2 | 2" | 1 7/16" | IP66, NEMA 4X | 0000000 | 000000 |
0-50 | 250 | 10-35V DC | 1/4 | No | 1/4" | 2 | 2" | 1 7/16" | IP66, NEMA 4X | 0000000 | 000000 |
High-Accuracy Differential Pressure Transmitters

- For Use With: Air, Water
- Accuracy: ±0.25%
- Pipe Connection: NPT Female
- Housing Material: Aluminum
- Connection Material: 17-4 PH Stainless Steel
- Temperature Range: 0° to 175° F
At least twice as accurate as standard transmitters, these transmitters sense differential pressure at an accuracy of ±0.25%. Use them in laboratories or testing applications where the difference in pressure between two points needs to be measured with high accuracy. These transmitters are often used to indicate a filter is clogged or help you maintain a certain pressure in pumps, HVAC, cooling, and other air and liquid systems. They convert differential pressure to an electrical signal that can be interpreted by receiving devices, such as remote displays, programmable logic controllers, and motor speed controls to monitor pressure or control equipment. All transmitters are rated NEMA 4 for protection in washdown environments.
For your receiving device to interpret the signal from the transmitter, you will need to calibrate it for the pressure range and output signal of the transmitter. As the differential increases, the output signal from the transmitter will increase. Transmitters will only provide accurate readings within the rated pressure range. Connect them using two wires. The same wire is used to send a signal to the receiver and to power the transmitter. Current doesn’t lose signal over long distances and isn’t affected by electrical interference from other devices.
Mounting Holes | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Differential Pressure Range, psi | Max. Input Pressure, psi | Input Voltage | Pipe Size | Mounting Hardware Included | Dia. | No. of | Ht. | Wd. | Environmental Rating | Each | |
4-20 mA Output Signal—Screw Terminals | |||||||||||
0-50 | 350 | 9-30V DC | 1/4 | Yes | 5/32" | 4 | 3 1/8" | 2 7/16" | NEMA 4 | 0000000 | 000000000 |
High-Accuracy Pressure and Vacuum Transmitters

- For Use With: Air, Argon, Diesel Fuel, Gasoline, Hydraulic Fluid, Nitrogen, Water
- Accuracy: ±0.25%
- Pipe Connection: NPT Male
- Housing Material: 304 Stainless Steel
- Connection Material: 17-4 PH Stainless Steel
- Temperature Range: -40° to 255° F
With an accuracy of ±0.25%, use these transmitters in applications that require highly accurate measurement of both pressure and vacuum, such as activating vacuum pumps. All come with a calibration certificate traceable to NIST that states they’ve passed a test for accuracy. They convert pressure to an electrical signal that can be interpreted by receiving devices, such as remote displays, programmable logic controllers, and motor speed controls to monitor pressure or control equipment. As pressure increases, the output signal from the transmitter will increase. For your receiving device to interpret the signal from the transmitter, you will need to calibrate it for the pressure range and output signal of the transmitter. Transmitters will only provide accurate readings within the rated pressure range.
Rated IP67 and NEMA 4X, these transmitters seal out dust and water from temporary submersion. All are CE marked, so they meet European safety standards.
These transmitters connect using two wires to send a 4-20mA current output. The same wire is used to send a signal to the receiver and to power the transmitter. Current doesn’t lose signal over long distances and isn’t affected by electrical interference from other devices.
Transmitters with Calibration Certificate Traceable to NIST | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Pressure Range, psi | Vacuum Range, in. of Hg | Maximum Continuous Pressure, psi | Maximum Short-Term Pressure, psi | Input Voltage | Pipe Size | Ht. | Wd. | Environmental Rating | Each | |
4-20mA Current Output—Wire Leads | ||||||||||
0-25 | 29.9-0 | 25 | 50 | 9-30V DC | 1/4 | 2 1/8" | 1" | IP67, NEMA 4X | 0000000 | 0000000 |
0-50 | 29.9-0 | 50 | 100 | 9-30V DC | 1/4 | 2 1/8" | 1" | IP67, NEMA 4X | 0000000 | 000000 |
Tank-Mount Pressure-Regulating Valves for Air and Inert Gas
- For Use With: See Table
- Temperature Range: -20° to 120° F
These valves automatically reduce a high inlet pressure from compressed gas tanks to a lower, stable outlet pressure. All have Compressed Gas Association (CGA) numbered inlet fittings for secure connections to compressed gas tanks. Choose a valve with the same CGA number as your tank and other system components. Valves have a gauge to monitor outlet pressure and a gauge to monitor inlet pressure from the tank.
Choose a valve with a maximum outlet pressure that’s approximately twice your application’s normal operating pressure. Your operating pressure should never exceed 75% of the valve’s maximum outlet pressure.
Single-stage valves reduce pressure in one step, which causes the outlet pressure to fluctuate slightly as you empty the tank. They’re best for applications where a constant outlet pressure isn’t critical.
Two-stage valves progressively reduce pressure over two steps for more consistent outlet pressure at all times. They’re often used in applications that require a constant outlet pressure regardless of the tank level.
Valves with a brass body have a longer service life than valves with a brass and steel body.
Valves with a stainless steel diaphragm can withstand harsh environments.



Inlet | Outlet | Material | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
CGA Number | Location | Thread Direction | Pressure Gauge Range, psi | Location | Thread Direction | Pressure Range, psi | Pressure Adjustment Method | Body | Seal | Diaphragm | Each | |
For Use With Argon, Helium, and Nitrogen | ||||||||||||
9/16"-18 UNF Male Outlet × NGO Male Inlet | ||||||||||||
CGA 580 | Side | Right Hand | 0 to 4,000 | Side | Right Hand | 0 to 50 | T-Handle | Brass | PTFE | Neoprene | 00000000 | 0000000 |
For Use With Oxygen | ||||||||||||
9/16"-18 UNF Male Outlet × NGO Female Inlet | ||||||||||||
CGA 540 | Side | Right Hand | 0 to 4,000 | Side | Left Hand | 0 to 50 | Knob | Brass | PTFE | Neoprene | 00000000 | 000000 |
CGA 540 | Side | Right Hand | 0 to 4,000 | Side | Right Hand | 0 to 50 | T-Handle | Brass | PTFE | Neoprene | 00000000 | 000000 |
CGA 540 | Side | Right Hand | 0 to 4,000 | Side | Right Hand | 0 to 50 | T-Handle | Brass | PTFE | Stainless Steel | 00000000 | 000000 |


Inlet | Outlet | Material | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
CGA Number | Location | Thread Direction | Pressure Gauge Range, psi | Location | Thread Direction | Pressure Range, psi | Pressure Adjustment Method | Body | Seal | Diaphragm | Each | |
For Use With Argon, Helium, and Nitrogen | ||||||||||||
5/8"-18 UNF Female Outlet × NGO Male Inlet | ||||||||||||
CGA 580 | Side | Right Hand | 0 to 4,000 | Side | Right Hand | 0 to 50 | T-Handle | Brass | PTFE | Neoprene | 00000000 | 0000000 |
CGA 580 | Side | Right Hand | 0 to 4,000 | Side | Right Hand | 0 to 50 | T-Handle | Brass | PTFE | Stainless Steel | 0000000 | 000000 |
For Use With Oxygen | ||||||||||||
9/16"-18 UNF Male Outlet × NGO Female Inlet | ||||||||||||
CGA 540 | Side | Right Hand | 0 to 4,000 | Side | Right Hand | 0 to 50 | T-Handle | Brass | PTFE | Neoprene | 00000000 | 000000 |
CGA 540 | Side | Right Hand | 0 to 4,000 | Side | Right Hand | 0 to 50 | T-Handle | Brass | PTFE | Stainless Steel | 00000000 | 000000 |
High-Purity Tank-Mount Pressure-Regulating Valves for Inert Gas
- For Use With: See Table
- Temperature Range: -20° to 120° F
Reduce contaminants in research sample systems, emission monitoring systems, chromatography, and other high-purity applications that use argon, helium, nitrogen, or carbon dioxide. These valves have a 316 stainless steel and brass body with a smooth finish to reduce dust collection and internal components designed to protect the seal and diaphragm from contamination. They automatically reduce a high inlet pressure from compressed gas tanks to a lower, stable outlet pressure. All have Compressed Gas Association (CGA) numbered inlet fittings for secure connections to compressed gas tanks. Choose a valve with the same CGA number as your tank and other system components. Outlet fittings are Swagelok® for a leak-free seal around hard metal tubing in high-pressure lines. Also known as instrumentation fittings, Swagelok® fittings are compatible with Parker A-Lok, Gyrolok, Bilok, and Tylok fittings. Valves have a gauge to monitor outlet pressure and a gauge to monitor inlet pressure from the tank.
Choose a valve with a maximum outlet pressure that’s approximately twice your application’s normal operating pressure. Your operating pressure should never exceed 75% of the valve’s maximum outlet pressure.
Single-stage valves reduce pressure in one step, which causes the outlet pressure to fluctuate slightly as you empty the tank. They’re best for applications where a constant outlet pressure isn’t critical.
Two-stage valves progressively reduce pressure over two steps for more consistent outlet pressure at all times. They’re often used in applications that require a constant outlet pressure regardless of the tank level.
Chrome-plated valves add a layer of corrosion resistance.


Inlet | Outlet | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
CGA Number | Location | Thread Direction | Pressure Gauge Range, psi | Stage | For Tube OD | Location | Pressure Range, psi | Pressure Adjustment Method | Each | |
Swagelok® Female Outlet × NGO Male Inlet | ||||||||||
Brass Body—316 Stainless Steel Diaphragm and PTFE Seal | ||||||||||
CGA 580 | Side | Right Hand | 0 to 4,000 | Two | 1/4" | Side | 0 to 50 | Knob | 0000000 | 0000000 |
Chrome-Plated Brass Body—316 Stainless Steel Diaphragm and PTFE Seal | ||||||||||
CGA 580 | Side | Right Hand | 0 to 4,000 | Two | 1/4" | Side | 0 to 50 | Knob | 0000000 | 000000 |

Inlet | Outlet | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
CGA Number | Location | Thread Direction | Pressure Gauge Range, psi | Stage | For Tube OD | Location | Pressure Range, psi | Pressure Adjustment Method | Each | |
Swagelok® Female Outlet × NGO Female Inlet | ||||||||||
Chrome-Plated Brass Body—316 Stainless Steel Diaphragm and PTFE Seal | ||||||||||
CGA 320 | Side | Right Hand | 0 to 4,000 | Single | 1/4" | Side | 0 to 50 | Knob | 0000000 | 0000000 |
CGA 320 | Side | Right Hand | 0 to 4,000 | Two | 1/4" | Side | 0 to 50 | Knob | 0000000 | 000000 |
Tank-Mount Pressure-Regulating Valves for Fuel Gases
- For Use With: See Table
- Temperature Range: -20° to 120° F
Attach these valves to acetylene, hydrogen, methane, propane, or propylene tanks to reduce a high inlet pressure to a lower, stable outlet pressure. They have Compressed Gas Association (CGA) numbered inlet fittings for secure connections to compressed gas tanks. Choose a valve with the same CGA number as your tank and other system components. Valves come with a gauge to monitor outlet pressure and a gauge to monitor inlet pressure from the tank.
Choose a valve with a maximum outlet pressure that’s approximately twice your application’s normal operating pressure. Your operating pressure should never exceed 75% of the valve’s maximum outlet pressure.
Single-stage valves reduce pressure in one step, which causes the outlet pressure to fluctuate slightly as you empty the tank. They’re best for applications where a constant outlet pressure isn’t critical.
Two-stage valves progressively reduce pressure over two steps for more consistent outlet pressure at all times. They’re often used in applications that require a constant outlet pressure regardless of the tank level.
Valves with a brass body have a longer service life than valves with a brass and steel body.


Inlet | Outlet | Material | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CGA Number | Location | Thread Direction | Pressure Gauge Range, psi | Thread Size | Location | Thread Direction | Pressure Range, psi | Pressure Adjustment Method | Body | Seal | Diaphragm | Each | |
For Use With Propane and Propylene | |||||||||||||
UNF Male Outlet × NGO Male Inlet | |||||||||||||
CGA 510 | Side | Left Hand | 0 to 400 | 9/16"-18 | Side | Left Hand | 0 to 50 | T-Handle | Brass | PTFE | Rubber | 0000000 | 0000000 |
CGA 510 | Side | Left Hand | 0 to 400 | 9/16"-18 | Side | Left Hand | 5 to 50 | Knob | Brass/Steel | PTFE | Rubber | 0000000 | 000000 |

Inlet | Outlet | Material | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CGA Number | Location | Thread Direction | Pressure Gauge Range, psi | Thread Size | Location | Thread Direction | Pressure Range, psi | Pressure Adjustment Method | Body | Seal | Diaphragm | Each | |
For Use With Propane and Propylene | |||||||||||||
UNF Male Outlet × NGO Male Inlet | |||||||||||||
CGA 510 | Side | Left Hand | 0 to 400 | 9/16"-18 | Side | Left Hand | 0 to 50 | T-Handle | Brass/Steel | PTFE | Rubber | 0000000 | 0000000 |
Tire Pressure Gauges with Indicator Bar
A bar slides out of the top of these gauges to display pressure reading.
Stainless steel gauges are more corrosion resistant than steel and brass gauges.
Gauges with a quick-disconnect tip press into the valve stem rather than clamping over it for a faster setup and more accurate readings.


Pressure Range | ||||||||
---|---|---|---|---|---|---|---|---|
psi | kPa | Numeric Increments, psi | Accuracy | Overall Lg. | Indicator Bar Material | Features | Each | |
Chrome-Plated Steel | ||||||||
10-50 | __ | 1 | ±2 psi | 9" | Plastic | Pocket Clip, Quick-Connect Tip | 00000000 | 00000 |
Nickel-Plated Brass | ||||||||
5-50 | 40-350 | 1 | ±2 psi | 6" | Plastic | Pocket Clip | 0000000 | 0000 |
Stainless Steel | ||||||||
10-50 | 70-340 | 1 | ±2 psi | 5 3/4" | Plastic | Pocket Clip | 00000000 | 0000 |
Compressed Air Regulators
Adjust and maintain the pressure of your compressed air. Install regulators in your air line after filters.
Relieving regulators exhaust when the downstream pressure exceeds the set pressure.
Mounting brackets allow you to attach the regulator to a wall or equipment.

Regulators | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Overall | Mounting Brackets | ||||||||||
Inlet | Outlet | Max. Flow Rate | Max. Pressure, psi | Wd. | Ht. | Max. Temp., °F | Regulating Accuracy | Pressure Regulating Range, psi | Each | Each | ||
Aluminum Housing—NPT Female Inlet and Outlet | ||||||||||||
1 | 1 | 360 scfm @ 100 psi | 300 | 4 1/4" | 8 1/8" | 175° | ±3 psi | 5-50 | 0000000 | 0000000 | 0000000 | 000000 |
1 1/4 | 1 1/4 | 360 scfm @ 100 psi | 300 | 4 1/4" | 8 1/8" | 175° | ±3 psi | 5-50 | 0000000 | 000000 | 0000000 | 00000 |
1 1/2 | 1 1/2 | 360 scfm @ 100 psi | 300 | 4 1/4" | 8 1/8" | 175° | ±3 psi | 5-50 | 0000000 | 000000 | 0000000 | 00000 |
Each | ||
Aluminum Housing | ||
---|---|---|
For 5-50 or 5-60 psi Pressure Regulating Range | 00000000 | 000000 |
Compact Compressed Air Regulators

A lower profile than our other compressed air regulators makes these regulators a better fit in tight spots. Use them to adjust and maintain the pressure of your compressed air. Install in your air line after filters.
Relieving regulators exhaust when the downstream pressure exceeds the set pressure.
Mounting brackets allow you to attach the regulator to a wall or equipment.
Regulators | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Overall | Mounting Brackets | |||||||||||
Inlet | Outlet | Max. Flow Rate | Max. Pressure, psi | Gauge Included | Wd. | Ht. | Max. Temp., °F | Regulating Accuracy | Pressure Regulating Range, psi | Each | Each | ||
Zinc Housing—BSPP Female Inlet and Outlet | |||||||||||||
1/8 | 1/8 | 14 scfm @ 100 psi | 300 | Yes | 1 5/8" | 3" | 150° | ±3 psi | 5-50 | 0000000 | 000000 | 0000000 | 000000 |
1/4 | 1/4 | 15 scfm @ 100 psi | 300 | Yes | 1 5/8" | 3" | 150° | ±3 psi | 5-50 | 0000000 | 00000 | 0000000 | 00000 |
Zinc Housing—NPT Female Inlet and Outlet | |||||||||||||
1/8 | 1/8 | 14 scfm @ 100 psi | 300 | Yes | 1 5/8" | 3" | 150° | ±3 psi | 5-50 | 0000000 | 00000 | 0000000 | 00000 |
1/4 | 1/4 | 15 scfm @ 100 psi | 300 | Yes | 1 5/8" | 3" | 150° | ±3 psi | 5-50 | 0000000 | 00000 | 0000000 | 00000 |