About Pressure Switches
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Differential Pressure Switches for Liquids
Detect the difference in pressure between two points. For instance, these switches can indicate a filter is clogged in a pump or cooling system. When the differential pressure reaches your setpoint, they turn equipment on and off, activate automated controls, or signal alarms. They 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 meet at least one safety standard.
NEMA 4 and NEMA 4X rated switches can be used in dirty and wet areas exposed to washdowns and weather. NEMA 4X rated switches also have increased protection against corrosion, similar to 304 stainless steel. NEMA 13 rated switches can be used in dirty, damp, and oily areas. IP66 rated switches protect against dust and washdowns.
For technical drawings and 3-D models, click on a part number.
| Setpoint Range | Approximate Difference Between Setpoint and Reset Point | Max. Input Pressure, psi | Accuracy | Max. Switching Current | Process Temp. Range, °F | Connection Material | For Use With | Specifications Met | Each | |
Screw Terminals—1/4 NPT Female Pipe Connection | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
NEMA 4X, NEMA 13, IP66 | ||||||||||
| 4.5-30 in. of H2O | 2 in. of H2O | 5.4 | ±1% | 15 A @ 125 V AC 15 A @ 240 V AC 15 A @ 480 V AC 6 A @ 30 V DC 500 mA @ 125 V DC 250 mA @ 240 V DC | 0° to 150° | Steel | Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water | C-UL Listed, CE Marked, CSA Certified, CSA-US Certified, FM Approved, UL Listed | 0000000 | 0000000 |
| 9-60 in. of H2O | 2.5 in. of H2O | 5.4 | ±1% | 15 A @ 125 V AC 15 A @ 240 V AC 15 A @ 480 V AC 6 A @ 30 V DC 500 mA @ 125 V DC 250 mA @ 240 V DC | 0° to 150° | Steel | Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water | C-UL Listed, CE Marked, CSA Certified, CSA-US Certified, FM Approved, UL Listed | 0000000 | 000000 |
| 15-100 in. of H2O | 4 in. of H2O | 5.4 | ±1% | 15 A @ 125 V AC 15 A @ 240 V AC 15 A @ 480 V AC 6 A @ 30 V DC 500 mA @ 125 V DC 250 mA @ 240 V DC | 0° to 150° | Steel | Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water | C-UL Listed, CE Marked, CSA Certified, CSA-US Certified, FM Approved, UL Listed | 0000000 | 000000 |
| 22.5-150 in. of H2O | 6.5 in. of H2O | 5.4 | ±1% | 15 A @ 125 V AC 15 A @ 240 V AC 15 A @ 480 V AC 6 A @ 30 V DC 500 mA @ 125 V DC 250 mA @ 240 V DC | 0° to 150° | Steel | Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water | C-UL Listed, CE Marked, CSA Certified, CSA-US Certified, FM Approved, UL Listed | 0000000 | 000000 |
| 2.25-15 psi | 3.5 psi | 500 | ±1% | 15 A @ 125 V AC 15 A @ 240 V AC 15 A @ 480 V AC 6 A @ 30 V DC 500 mA @ 125 V DC 250 mA @ 240 V DC | 0° to 150° | Brass | Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water | C-UL Listed, CE Marked, CSA Certified, CSA-US Certified, FM Approved, UL Listed | 0000000 | 000000 |
| 4.5-30 psi | 3.5 psi | 500 | ±1% | 15 A @ 125 V AC 15 A @ 240 V AC 15 A @ 480 V AC 6 A @ 30 V DC 500 mA @ 125 V DC 250 mA @ 240 V DC | 0° to 150° | Brass | Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water | C-UL Listed, CE Marked, CSA Certified, CSA-US Certified, FM Approved, UL Listed | 0000000 | 000000 |
| 9-60 psi | 4.5 psi | 500 | ±1% | 15 A @ 125 V AC 15 A @ 240 V AC 15 A @ 480 V AC 6 A @ 30 V DC 500 mA @ 125 V DC 250 mA @ 240 V DC | 0° to 150° | Brass | Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water | C-UL Listed, CE Marked, CSA Certified, CSA-US Certified, FM Approved, UL Listed | 0000000 | 000000 |
| 15-100 psi | 15.5 psi | 1,000 | ±1% | 15 A @ 125 V AC 15 A @ 240 V AC 15 A @ 480 V AC 6 A @ 30 V DC 500 mA @ 125 V DC 250 mA @ 240 V DC | 0° to 150° | Brass | Diesel Fuel, Gasoline, Hydraulic Fluid, Oil, Water | C-UL Listed, CE Marked, CSA Certified, CSA-US Certified, FM Approved, UL Listed | 0000000 | 000000 |