About Pressure Gauges
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About Pressure Transmitters
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About Air Preparation
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Low-Pressure Differential Gauges with Color Indicator
A band of green, yellow, and red provides a clear indication of changes in differential pressure. Gauges are commonly used to indicate clogged filters.
- For Use With: Air, Water, Hydraulic Fluid, Carbon Dioxide, Nitrogen, Hydrogen, Argon, and Acetylene
- Accuracy: ±5% Full Scale (Not Graded)
Pressure Range, psi | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size  | Green Band | Yellow Band | Red Band | Max. Pressure, psi | Environment Temp. Range, °F | Process Temp. Range, °F | Ht. | Wd. | Dp. | Case Color | Each | |
NPT Female | ||||||||||||
| 1/4 | 0-13 | 13-20 | 20-30 | 300 | -40° to 200° | -40° to 200° | 3 1/4" | 3 1/4" | 1 1/2" | Black | 0000000 | 0000000 |
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 20 | 1 | 5 |
4 1/2" Dial Diameter | ||
| 0 to 20 | 1 | 5 |
- 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 20 | 1 | 5 |
4 1/2" Dial Diameter | ||
| 0 to 20 | 1 | 5 |
Differential Pressure and Vacuum Gauges with Digital Display
Gauges have a four-digit LCD display for easy reading of measurements. Commonly used to indicate clogged filters, these gauges display the difference between two pressure or vacuum measurements. They are also known as compound gauges.
- For Use With: Air
- Accuracy: ±0.5% Full Scale (Not Graded)
Pressure Range | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| psi | kPa | in. of H₂O | mbar | Vacuum Range, in. of Hg | Resolution, in. of H₂O | Max. Pressure, psi | For Tube ID | Environment Temp. Range, °F | Process Temp. Range, °F | Digit Ht. | Batteries Included | Features | Each | |
Barbed Tube Connection | ||||||||||||||
| 0-20 | 0-137.9 | 0-553" | 0-1,379 | 40.72"-0 | 0.01 | 60 | 1/8"-3/16" | 35° to 100° | 0° to 140° | 3/8" | Yes | 40-Reading Memory, Overpressure Alarm | 0000000 | 0000000 |
Barbed Tube Connection with Calibration Certificate Traceable to NIST | ||||||||||||||
| 0-20 | 0-137.9 | 0-553" | 0-1,379 | 40.72"-0 | 0.01 | 60 | 1/8"-3/16" | 35° to 100° | 0° to 140° | 3/8" | Yes | 40-Reading Memory, Overpressure Alarm | 0000000 | 000000 |
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.
IP56 rated transmitters protect against some dust and washdowns. NEMA 4 rated transmitters protect against weather and washdowns.
- For Use With: Hydraulic Fluid, Water
- Accuracy: ±1%
- Pipe Connection: NPT Female
- Connection Material: Brass
- Temperature Range: 32° to 122° F
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 Output Signal—Screw Terminals | |||||||||||
| 0-1 in. of H2O | 20 | 18-30V DC | 1/8 | No | 7/32" | 4 | 3 5/16" | 2 15/16" | IP56, NEMA 4 | 0000000 | 000000000 |
| 0-3 in. of H2O | 20 | 18-30V DC | 1/8 | No | 7/32" | 4 | 3 5/16" | 2 15/16" | IP56, NEMA 4 | 0000000 | 000000 |
| 0-5 in. of H2O | 20 | 18-30V DC | 1/8 | No | 7/32" | 4 | 3 5/16" | 2 15/16" | IP56, NEMA 4 | 0000000 | 000000 |
| 0-10 in. of H2O | 20 | 18-30V DC | 1/8 | No | 7/32" | 4 | 3 5/16" | 2 15/16" | IP56, NEMA 4 | 0000000 | 000000 |
| 0-25 in. of H2O | 20 | 18-30V DC | 1/8 | No | 7/32" | 4 | 3 5/16" | 2 15/16" | IP56, NEMA 4 | 0000000 | 000000 |
| 0-1 psi | 20 | 18-30V DC | 1/8 | No | 7/32" | 4 | 3 5/16" | 2 15/16" | IP56, NEMA 4 | 0000000 | 000000 |
Vibration-Damping Pressure-Regulating
Valves for Water, Oil, Air, and Inert Gas
- For Use With: Water, Oil, Air, Inert Gas
- Temperature Range: See Table
A cast iron body absorbs vibration from pressure changes to reduce wear and noise in your pipeline. These valves automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range.
Internal strainers trap debris.
Inlet | Outlet | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Pipe Size | Location | Max. Pressure, psi | Pipe Size | Location | Temperature Range | End-to-End Lg. | Outlet Pressure Range, psi | Each | |
NPT Female | |||||||||
Cast Iron Body—Buna-N Diaphragm and Seal with Internal Strainer | |||||||||
| 3/4 | Side | 200 | 3/4 | Side | 32° to 180° F | 5 1/8" | 2 to 20 | 0000000 | 0000000 |
| 1 | Side | 200 | 1 | Side | 32° to 180° F | 5 7/8" | 2 to 20 | 0000000 | 000000 |
| 2 | Side | 200 | 2 | Side | 32° to 180° F | 9 1/4" | 2 to 20 | 0000000 | 00000000 |
Corrosion-Resistant Pressure-Regulating
Valves for Water, Oil, Air, and Inert Gas
- For Use With: Water, Oil, Air, Inert Gas
- Temperature Range: 32° to 200° F
Often used in wet conditions and harsh environments, these valves have a 316 stainless steel body for excellent corrosion resistance. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range.
Extended-Life Pressure-Regulating Valves for Water, Oil, Air, and Inert Gas
- For Use With: Water, Oil, Air, Inert Gas
- Temperature Range: 32° to 180° F
For a longer service life than brass and cast iron valves, these have a durable bronze body. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. All valves have an internal strainer to trap debris.
Low-Pressure-Regulating Valves for Water
- For Use With: Water
- Temperature Range: 0° to 120° F
Designed for excellent performance at low pressures, these valves respond to even the slightest inlet pressure changes to maintain a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves have an internal strainer to trap debris.
Inlet | Outlet | |||||||
|---|---|---|---|---|---|---|---|---|
| Pipe Size | Location | Max. Pressure, psi | Pipe Size | Location | End-to-End Lg. | Outlet Pressure Range, psi | Each | |
NPT Female | ||||||||
Brass Body—Buna-N Coated Nylon Diaphragm and 303 Stainless Steel Seal | ||||||||
| 1/4 | Side | 300 | 1/4 | Side | 4 1/4" | 0 to 20 | 0000000 | 0000000 |
High-Temperature Pressure-Regulating Valves for Water, Oil, Air, and Inert Gas
- For Use With: Water, Oil, Air, Inert Gas
- Temperature Range: 32° to 550° F
Rated for more than double the temperature of standard pressure-regulating valves, these can withstand temperatures up to 550° F. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves meet ANSI/FCI 70-2 Class IV for tight shut-off (max. leakage rate of 0.01%).
Inlet | Outlet | |||||||
|---|---|---|---|---|---|---|---|---|
| Pipe Size | Location | Max. Pressure, psi | Pipe Size | Location | End-to-End Lg. | Outlet Pressure Range, psi | Each | |
NPT Female | ||||||||
Steel Body—316 Stainless Steel Diaphragm and 303 Stainless Steel Seal | ||||||||
| 1 | Side | 300 | 1 | Side | 4 3/16" | 5 to 20 | 00000000 | 000000000 |
| 1 1/2 | Side | 300 | 1 1/2 | Side | 4 13/16" | 5 to 20 | 00000000 | 00000000 |
| 2 | Side | 300 | 2 | Side | 5 1/2" | 5 to 20 | 00000000 | 00000000 |
High-Accuracy Pressure-Regulating Valves for Steam
- For Use With: Steam
- Temperature Range: 40° to 450° F
Control steam line pressure with ±1 psi accuracy. These valves automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves have a cast iron body that absorbs vibration from pressure changes to reduce wear and noise in your pipeline. They meet ANSI/FCI 70-2 Class IV for tight shut-off (max. leakage rate of 0.01%). Install 1/4 NPT male pipe (not included) between the control valve and your downstream steam line.
Repair kits (sold separately) include replacement seals, diaphragm, spring, and spring assembly.
Valves | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Inlet | Outlet | Repair Kits | |||||||
| Pipe Size | Location | Max. Pressure, psi | Pipe Size | Location | Outlet Pressure Range, psi | Each | Each | ||
NPT Female | |||||||||
Cast Iron Body—301 Stainless Steel Diaphragm and 420 Stainless Steel Seal | |||||||||
| 1/2 | Side | 250 | 1/2 | Side | 3 to 20 | 0000000 | 000000000 | 0000000 | 0000000 |
| 3/4 | Side | 250 | 3/4 | Side | 3 to 20 | 0000000 | 00000000 | 0000000 | 000000 |
| 1 | Side | 250 | 1 | Side | 3 to 20 | 0000000 | 00000000 | 0000000 | 000000 |
| 1 1/4 | Side | 250 | 1 1/4 | Side | 3 to 20 | 0000000 | 00000000 | 0000000 | 000000 |
| 1 1/2 | Side | 250 | 1 1/2 | Side | 3 to 20 | 0000000 | 00000000 | 0000000 | 000000 |
| 2 | Side | 250 | 2 | Side | 3 to 20 | 0000000 | 00000000 | 0000000 | 00000000 |
Pressure-Regulating Valves for Steam
- For Use With: Steam
- Temperature Range: -20° to 400° F
Automatically reduce a high, variable inlet pressure in your steam system to a lower, stable outlet pressure. Adjust the outlet pressure within the range. These valves have a cast iron body that absorbs vibration from pressure changes to reduce wear and noise in your pipeline.
Internal strainers trap debris.
Valves | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Inlet | Outlet | Repair Kits | ||||||||
| Pipe Size | Location | Max. Pressure, psi | Pipe Size | Location | End-to-End Lg. | Outlet Pressure Range, psi | Each | Each | ||
NPT Female | ||||||||||
Cast Iron Body—Bronze Diaphragm and PTFE Seal with Internal Strainer | ||||||||||
| 3/4 | Side | 150 | 3/4 | Side | 5 1/8" | 2 to 20 | 0000000 | 0000000 | 0000000 | 0000000 |
| 1 | Side | 150 | 1 | Side | 5 7/8" | 2 to 20 | 0000000 | 000000 | 0000000 | 000000 |
| 2 | Side | 150 | 2 | Side | 9 1/4" | 2 to 20 | 0000000 | 00000000 | 0000000 | 000000 |
Extended-Life Pressure-Regulating Valves for Steam
- For Use With: Steam
- Temperature Range: -20° to 400° F
For a longer service life than cast iron valves, these have a durable bronze body. All automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range. Valves have an internal strainer to trap debris.
Corrosion-Resistant Pressure-Regulating Valves for Steam
- For Use With: Steam
- Temperature Range: -40° to 450° F
Regulate steam pressure in wet environments and harsh conditions with these valves that have a 316 stainless steel body for exceptional corrosion resistance. They automatically reduce a high, variable inlet pressure to a lower, stable outlet pressure. Adjust the outlet pressure within the range.
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.
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. Panel-mount regulators have inlet ports on the bottom to easily connect air lines after mounting to your control panel.
Overall | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Inlet Pipe Size | Outlet Thread Size | Max. Flow Rate | Max. Pressure, psi | Gauge Included | Wd. | Ht. | Max. Temp., °F | Regulating Accuracy | Pressure Regulating Range, psi | Each | |
Brass Housing—NPT Male Inlet × UNF Female Outlet | |||||||||||
| 1/8 | 10-32 | 5 scfm @ 100 psi | 250 | No | 3/4" | 2 3/4" | 150° | ±10% | 0-20 | 0000000 | 000000 |
Pressure Recording Film
Create an instant, permanent image of pressure distribution and magnitude. These sheets of film help you identify uneven pressure that can lead to leaks and stress fractures. Use them between any two surfaces that touch each other, such as bolted joints, welding fixtures, and jigs. Tiny capsules within the film burst at specific pressure levels, causing the film to change color. This produces an instant map of pressure variation, similar to a heat map. For a custom size, cut the film with scissors.
Film that includes two sheets must be used together.
Pressure Film | ||||||
|---|---|---|---|---|---|---|
| Pressure Range, psi | Image Produced | Temp. Range, °F | Includes | Accuracy | Each | |
11" × 17" | ||||||
0.02" Thick. | ||||||
| 2-20 | Grayscale | 0° to 150° | Two 0.01" Thick Sheets | Not Rated | 0000000 | 000000 |