About Pressure Switches
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Sanitary Photoelectric Switches
Maintain sanitary standards—these switches have smooth surfaces without crevices, so they prevent bacteria from building up and are easy to clean. You’ll find them in food, beverage, and pharmaceutical applications. Made of stainless steel, they won’t corrode from frequent cleanings. All are IP68 and IP69K rated for protection against temporary submersion and high-pressure, high-temperature washdowns. Because they’re photoelectric, they don’t make contact with items like other actuators do. Instead, they use light to detect objects that are moving quickly. These switches have a plug, which connects to cables with a socket (sold separately), so you can quickly connect and disconnect the switch. Install them with brackets, clamps, extension tubes, or mounting adapters (all sold separately).
Direct-sensing switches project light onto an object and then detect the reflection to actuate. The transmitter and receiver are in the same housing, so these switches fit in tight spaces.
Receiver switches detect an object when it passes between the switch and the included reflector, interrupting the beam. They have a longer sensing distance than direct-sensing switches.
| Light Beam Switch Operation | Light Beam Ht. | Max. Sensing Distance | Input Voltage  | Current Output | Signal Output Type | OD, mm | Ht., mm | Housing Material | Temperature Range, °F | Environmental Rating | Specifications Met | Each | |
With 4-Pole Micro M12 Plug | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Adjustable Direct Sensing Switch with Visible Light Beam | |||||||||||||
| On When Object Absent, On When Object Present | 1/4" | 4" | 10V DC-30V DC | 200mA | PNP | 20 | 107 | 316L Stainless Steel | -10° to 140° | IP68, IP69K | UL Listed, C-UL Listed, CE Marked | 0000000 | 0000000 |
Adjustable Receiver Switch with Visible Light Beam | |||||||||||||
| On When Object Absent | 1/4" | 13ft. | 10V DC-30V DC | 200mA | PNP | 20 | 107 | 316L Stainless Steel | -10° to 140° | IP68, IP69K | UL Listed, C-UL Listed, CE Marked | 0000000 | 000000 |
Brackets mount the switch to a panel vertically without a gap or exposed threads. They have an O-ring made of fluoroelastomer rubber that creates a seal with the panel to maintain sanitary ratings and withstand washdowns.
| For OD, mm | For Hole Dia., mm | For Max. Wall Thick., mm | Material | O-Ring Material | Each | |
| 20 | 25 | 22 | 316L Stainless Steel | Fluoroelastomer Rubber | 0000000 | 000000 |
Leveling brackets mount the switch to a panel when the panel is at an angle. They permit up to 10 degrees of angle compensation using an FDA-approved PTFE ball joint. An O-ring made of fluoroelastomer rubber creates a seal with the panel to maintain sanitary ratings and withstand washdowns.
| For OD, mm | For Hole Dia., mm | For Max. Wall Thick., mm | Max. Angle of Correction | Material | O-Ring Material | Each | |
| 20 | 45 | 20 | 10° | 316L Stainless Steel | Fluoroelastomer Rubber | 0000000 | 0000000 |
Clamps fix switches or mounting tubes to surfaces without a panel cutout. They come with hygienic screws.
| For OD, mm | For Max. Wall Thick., mm | Material | Mounting Screw Size | Each | |
| 20 | 6.5 | 316L Stainless Steel | M6 | 0000000 | 000000 |
Extension tubes position the switch further from the panel. They can also be used to cover cable and connectors behind the panel. They fit inside the mounting brackets. Those with a height of 119 mm have a threaded cable gland which matches the size of the switch cable sealing the system. This helps maintain the sanitary ratings and withstands washdowns.
Mounting adapters help you create your own mounting tube. You can glue, press fit, or weld them. They have the same connection as the switches and mounting tubes.
| OD, mm | Material | Each | |
| 18 | 316L Stainless Steel | 0000000 | 000000 |
| No. of Poles | Coding | Face Dia. | Voltage | Current | Wire Lead Ga. | Cable OD | Cable Lead Lg., ft. | Housing Material | Environmental Rating | Specifications Met | Each | |
| 4 | A | 0.3" | 250V AC/250V DC | 4A | 22 | 0.25" | 12 | PVC Plastic | IP67 | CSA Certified, UL Recognized Component | 0000000 | 000000 |
Sanitary Pressure Switches
3-A certified, these food-safe switches trigger automated controls and alarms when food-processing, pharmaceutical, and biotech lines reach a set pressure. These switches have many features that make them safe for sanitary environments because they reduce the space where bacteria could grow. A sleeve shields internal parts from water and other contaminants. Polished surfaces and smoothly welded seams make cleaning easier. Made of 316 stainless steel, they stand up to harsh cleaners and sanitizers without rusting. Rated IP67 and NEMA 6, they’re dust tight and withstand washdowns and temporary submersion.
Connect them to your line with the same quick-clamp fittings (also known as tri-clamp fittings) that are common on sanitary lines since they’re easy to take apart for cleaning. The quick-clamp end has a diaphragm that protects the switches from corrosive material and covers threads to keep them clean. The diaphragm is filled with 99.5% pure USP food-grade glycerin, which keeps the switch clean if the diaphragm fails. It’s also laser etched with the serial number to reduce crevices.
Twist the adjustable setpoint ring to make quick changes. These switches are single pole, double throw (SPDT) and can be installed to turn one circuit from off to on (normally open) or from on to off (normally closed).
All have a certificate with traceable lot number and material test report.
| Setpoint, psi | Approximate Difference Between Setpoint and Reset Point, psi | Max. Continuous Pressure, psi | Max. Short-Term Pressure, psi | Accuracy | Max. Switching Current | Process Temp. Range, °F | Connection Material | Width | For Use With | Specifications Met | Each | |
Wire Leads | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 1/2" Tube OD Quick-Clamp Connection | ||||||||||||
| 6 to 30 | 3 | 30 | 1,000 | ±2% | 5 A @ 125 V AC 5 A @ 250 V AC 3 A @ 28 V DC | -40° to 212° | 316 Stainless Steel | 2" | Beverage, Food | 3-A Certified 74-07, UL Listed | 00000000 | 0000000 |
| 8 to 60 | 5 | 60 | 1,000 | ±2% | 5 A @ 125 V AC 5 A @ 250 V AC 3 A @ 28 V DC | -40° to 212° | 316 Stainless Steel | 2" | Beverage, Food | 3-A Certified 74-07, UL Listed | 00000000 | 000000 |
| 10 to 100 | 4 | 100 | 1,000 | ±2% | 5 A @ 125 V AC 5 A @ 250 V AC 3 A @ 28 V DC | -40° to 212° | 316 Stainless Steel | 2" | Beverage, Food | 3-A Certified 74-07, UL Listed | 00000000 | 000000 |
| 20 to 200 | 16 | 200 | 1,000 | ±5% | 5 A @ 125 V AC 5 A @ 250 V AC 3 A @ 28 V DC | -40° to 212° | 316 Stainless Steel | 2" | Beverage, Food | 3-A Certified 74-07, UL Listed | 00000000 | 000000 |
2" Tube OD Quick-Clamp Connection | ||||||||||||
| 6 to 30 | 3 | 30 | 1,000 | ±2% | 5 A @ 125 V AC 5 A @ 250 V AC 3 A @ 28 V DC | -40° to 212° | 316 Stainless Steel | 2 1/2" | Beverage, Food | 3-A Certified 74-07, UL Listed | 00000000 | 000000 |
| 8 to 60 | 6 | 60 | 1,000 | ±2% | 5 A @ 125 V AC 5 A @ 250 V AC 3 A @ 28 V DC | -40° to 212° | 316 Stainless Steel | 2 1/2" | Beverage, Food | 3-A Certified 74-07, UL Listed | 00000000 | 000000 |
| 10 to 100 | 4 | 100 | 1,000 | ±2% | 5 A @ 125 V AC 5 A @ 250 V AC 3 A @ 28 V DC | -40° to 212° | 316 Stainless Steel | 2 1/2" | Beverage, Food | 3-A Certified 74-07, UL Listed | 00000000 | 000000 |
| 20 to 200 | 16 | 200 | 1,000 | ±5% | 5 A @ 125 V AC 5 A @ 250 V AC 3 A @ 28 V DC | -40° to 212° | 316 Stainless Steel | 2 1/2" | Beverage, Food | 3-A Certified 74-07, UL Listed | 00000000 | 000000 |
Sanitary Pressure and Vacuum Switches
When these 3-A certified switches reach a set pressure or vacuum, they trigger controls and alarms in food-processing, pharmaceutical, and biotech lines. They have a sleeve to shield internal parts from water and contaminants. Their surfaces are polished and their seams are continuously welded, so cleaning is easy and there’s little room for bacteria to grow. Made of 316 stainless steel, these switches stand up to harsh cleaners and sanitizers without rusting. Rated IP67 and NEMA 6, they’re dust tight and protected from washdowns and temporary submersion.
They connect using the same quick-clamp fittings (also known as tri-clamp fittings) that are common in sanitary lines, because they’re easy to take apart for cleaning. This end has a diaphragm that protects from corrosion and covers threads to keep them clean. The diaphragm is filled with 99.5% pure USP food-grade glycerin, reducing the risk of contamination if the diaphragm fails. The serial number is laser etched on the diaphragm to reduce crevices.
Twist the adjustable setpoint ring to make quick changes. These switches are single pole, double throw (SPDT) and can be installed to turn one circuit from off to on (normally open) or from on to off (normally closed).
All have a certificate with a traceable lot number and material test report.
Setpoint | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pressure, psi | Vacuum, in. of Hg | Approximate Difference Between Setpoint and Reset Point, psi | Maximum Continuous Pressure, psi | Maximum Short-Term Pressure, psi | Accuracy | Maximum Switching Current | Process Temp. Range, °F | Connection Material | For Use With | Specifications Met | Each | |
Wire Leads | ||||||||||||
1 1/2" Tube OD Quick-Clamp Connection | ||||||||||||
| 0-15 | 30-0 | 3 | 15 | 1,000 | ±2% | 5 A @ 125 V AC 5 A @ 250 V AC 3 A @ 28 V DC | -40° to 212° | 316 Stainless Steel | Argon, Beverage, Diesel Fuel, Food, Gasoline, Hydraulic Fluid, Inert Gas, Natural Gas, Nitrogen, Oil, Oxygen, Water | 3-A Certified 74-07, UL Listed | 00000000 | 0000000 |
2" Tube OD Quick-Clamp Connection | ||||||||||||
| 0-15 | 30-0 | 3 | 15 | 1,000 | ±2% | 5 A @ 125 V AC 5 A @ 250 V AC 3 A @ 28 V DC | -40° to 212° | 316 Stainless Steel | Argon, Beverage, Diesel Fuel, Food, Gasoline, Hydraulic Fluid, Inert Gas, Natural Gas, Nitrogen, Oil, Oxygen, Water | 3-A Certified 74-07, UL Listed | 00000000 | 000000 |
Sanitary Level Switches
Detect when oil rises on water, foam forms on beer, and tanks empty, triggering pumps and valves in food and sanitary lines. These switches are 3-A and European Hygienic Engineering and Design Group (EHEDG) certified since they’re easy to keep clean. Highly polished, they prevent bacteria from growing. They also stand up to hot spraying water, chemicals, and cleaners common to food plants, thanks to their PEEK probe, stainless steel body, BSPP threads, and IP ratings. Their IP67 rating also means they won’t fail if under water temporarily.
To connect to automated systems and remote displays, these switches work with IO Link and 4-20 mA analog output, making them good for hard-to-reach areas. Program the colors on the LED indicator to tell you what the switch is sensing.
USP Class tested, the plastic in these switches won’t leach chemicals. They’re also C-UL listed and CE marked to meet Canadian and European safety standards.
Use quick-clamp adapters to connect these switches to quick-clamp sanitary tube fittings.
Note: Solids and liquids must have a dielectric constant of at least 1.5 to detect them.
| Pipe Size | Thread Type | Gender | Max. Pressure | Temp. Range, °F | Insertion Dp. | Switch Starting Position | Industry Designation | Output Current, mA | Output | Overall Lg. | Electrical Connection | Environmental Rating | Each | |
8V DC/36V DC Input Voltage | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
316 Stainless Steel Body | ||||||||||||||
| 1/2 | BSPP | Male | 145 psi @ 70° F | -40° to 230° | 9/16" | 1 Off (Normally Open) or 1 On (Normally Closed) | SPDT | 100 | NPN, PNP | 3 13/16" | M12-A 4-pin | IEC Zone 0 Groups IIC, IIB, IIA IP67 IP69K | 0000000 | 0000000 |
Tube Connection | Pipe Connection | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| For Tube OD | Flange OD | Pipe Size | Thread Type | Gender | Material | Max. Pressure | Specifications Met | Each | |
| 1 1/8" | 1.988" | 1/2 | BSPP | Female | 316 Stainless Steel | 550 psi @ 70° F | 3-A Certified 74-07, CE Marked, EHEDG Certified | 0000000 | 0000000 |
Sanitary Electronic Insertion Flow Switches
Easy to clean and install, these flow switches are 3-A certified to meet sanitary design standards and insert into your line with a quick-clamp mounting adapter (sold separately). They have a smooth probe, and unlike flow switches that measure with a paddle or turbine, these don’t have moving parts for contaminants to get stuck in. Rated IP67 and IP69K, they withstand temporary submersion and high-temperature, high-pressure washdowns. The mounting adapter attaches to a quick-clamp tube tee or outlet (often called tri-clamp fittings) in your large-diameter tubing system using a gasket and clamp (not included), so you don't need to disassemble your line for inline installation. This mounting adapter is also easy to remove and clean.
They send digital signals to your programmable logic controller (PLC) to activate automated controls or alarms when they reach a set flow rate. To calculate the flow rate, they generate a small amount of heat, then measure the cooling effect your liquid or gas has on it. This makes them ideal in applications with fluctuating temperatures. Use the buttons on the display to adjust the set point and other settings. They’re accurate in any mounting orientation.
Set Point Range | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| For Tube OD | For Liquids, gpm | For Gases, scfm | Max. Pressure | Temp. Range, °F | Max. Switching Current @ Voltage | Body Ht. | Environmental Rating | Specifications Met | Each | |
13/16" Probe Lg. | ||||||||||
316 Stainless Steel Body | ||||||||||
One Digital PNP Signal Output | ||||||||||
| 1 1/2" 2" | 0.55 to 54.21 0.97 to 96.37 | 4.84 to 72.47 8.59 to 128.84 | 430 psi @ 70° F | -10° to 200° | 250 mA @ 19 V DC, 250 mA @ 36 V DC | 3 5/16" | IP67, IP69K | 3-A Certified 74-07, C-UL Listed, CE Marked, FDA Compliant 21 CFR 177.2415, UL Listed | 0000000 | 0000000 |
1 13/16" Probe Lg. | ||||||||||
316 Stainless Steel Body | ||||||||||
One Digital PNP Signal Output | ||||||||||
| 1 1/2" 2" | 0.55 to 54.21 0.97 to 96.37 | 4.84 to 72.47 8.59 to 128.84 | 430 psi @ 70° F | -10° to 200° | 250 mA @ 19 V DC, 250 mA @ 36 V DC | 3 5/16" | IP67, IP69K | 3-A Certified 74-07, C-UL Listed, CE Marked, FDA Compliant 21 CFR 177.2415, UL Listed | 0000000 | 000000 |
