PST joins DwyerOmega. Read more>
OEM Mechanical Pressure Switch for Harsh Environments
8.5 to 50 psi, fixed deadband
Volume discounts available
Volume Discount Schedule
| Quantity | Price each |
|---|---|
| 1-24 | $165.72 |
| 25-49 | $157.43 |
| 50-99 | $154.12 |
| 100-199 | $147.49 |
| 200+ | $144.18 |
Added to Your Shopping Cart
Configuration complete.
Please add to cart to keep it or exit the configuration
Please add to cart to keep it or exit the configuration
Failed to Save Configurations, Click on Configure Button Start Again
- UL and CSA Marked
- Easy Adjustment with Locking Set Screw
- Rugged Industrial Design
- Standard 1 /2 " Female Conduit Fitting for Electrical Termination
PSW-804 Model Options
View all modelsEdit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.
*Highlighted options are not compatible. Please select a different combination.
Pressure Range
Pressure Type
Deadband Range
Switch Type
Pressure Port Size
Pressure Port Type
Deadband
- Contact Blocks 5 A maximum @ 125/250 Vac
- Maximum Ambient Temperature 75 {C} (167 {F})
- Maximum Rating 5 A maximum @ 125/250 Vac
- Minimum Ambient Temperature -20 {C} (-4 {F})
- Pressure Type Economical Industrial Pressure Switches for Vacuum to 7500 psi
- Pressure Units PSIG
- repeatability +/-1% of Span
- Sensor Type diaphragm piston
The PSW-800 Series are economical pressure switches which feature an easy-to-adjust setpoint with locking set screw. They utilize a sealed piston or diaphragm-piston design, which is ideally suited for harsh environments. All models come with 300 mm (12') color-coded leads and a ½' female conduit fitting for electrical connections.
SPECIFICATIONS
Setpoint Repeatability:
Diaphragm Models (PSW-801 to PSW-807): ±1% of span
Piston Models (PSW-808 to PSW-811): ±1.5% of span
Contact Rating: 5 amp max @ 125/250 Vac, silver serrated contacts 3 amps max @ 28 Vdc
Temp. Range:
Vacuum Range: -20 to 75°C (-4 to 167°F)
≤500 psi: -30 to 75°C (-22 to 167°F)
≥600 psi: -40 to 75°C (-40 to 167°F)
Thermal Effects: <1% for 25°C (45°F) change
Burst Pressure: 2x proof pressure
Sensor Type:
PSW-801 to PSW-807: diaphragm piston
PSW-808 to PSW-811: sealed piston
Wetted Parts:
≤500 psi: brass, Buna-N
≥600 psi: brass, Buna-N and stainless steel
Pressure Port: ¼ NPT male
Electrical Connection: 300 mm (12') free leads with ½' female conduit fitting
UL Marked: Number: E105651
CSA Marked: File: 216524
Housing: Open type plastic housing
Weight: 0.4 kg (0.95 lb)
SPECIFICATIONS
Setpoint Repeatability:
Diaphragm Models (PSW-801 to PSW-807): ±1% of span
Piston Models (PSW-808 to PSW-811): ±1.5% of span
Contact Rating: 5 amp max @ 125/250 Vac, silver serrated contacts 3 amps max @ 28 Vdc
Temp. Range:
Vacuum Range: -20 to 75°C (-4 to 167°F)
≤500 psi: -30 to 75°C (-22 to 167°F)
≥600 psi: -40 to 75°C (-40 to 167°F)
Thermal Effects: <1% for 25°C (45°F) change
Burst Pressure: 2x proof pressure
Sensor Type:
PSW-801 to PSW-807: diaphragm piston
PSW-808 to PSW-811: sealed piston
Wetted Parts:
≤500 psi: brass, Buna-N
≥600 psi: brass, Buna-N and stainless steel
Pressure Port: ¼ NPT male
Electrical Connection: 300 mm (12') free leads with ½' female conduit fitting
UL Marked: Number: E105651
CSA Marked: File: 216524
Housing: Open type plastic housing
Weight: 0.4 kg (0.95 lb)
RoHS 2015/863 - View Certificate
UL Listed
CSA
Do the pressure and vacuum switches have an IP rating?
Although the PSW-800 are sealed very well they do not have an actual IP or NEMA environmental rating.
Date published: 2022-01-28
Can these be used with 125 VDC? Are they compatible with diesel fuel?
The PSW-800 Series pressure switches cannot be used with 125 VDC. Maximum rating for DC Voltage use is 3A max @ 28VDC. The wetted parts would be compatible with diesel oil.
Date published: 2024-03-13
What is the thread size? I am looking to purchase the appropriate tap to thread this pressure switch into a schedule 40 pipe. Usually it’s pre threaded but this one was not.
The process connection thread on all ranges of the PSW-800 Series pressure switches is a 1/4-18 NPT male thread
Date published: 2020-12-03
Are these switches compatible with DOT 3 brake fluid?
No they are not. The Buna-N material in the switches wetted parts will be attacked by the brake fluid
Date published: 2020-08-25
