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OEM Mechanical Pressure Switch for Harsh Environments with 2 Outputs

10 to 150 psi, fixed deadband


Item# PSW-191

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-24 C$240.43
25-49 C$228.41
50-99 C$223.60
100-199 C$213.98
200+ C$209.17

In stock

Lead Time (If not in stock): 6 weeks
10 to 150 psi, fixed deadband PSW-191 PSW-191
  • Available Buna-N or FKM Diaphragm and O-ring
  • Contacts Rated for 5 Amps at 250 Vac or 30 Vdc
  • Pigtail Lead with Conduit Connection
  • High Operating Pressure

PSW-191 Model Options

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Edit 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 Port Size
Deadband Range
Switch Type
Pressure Type
Pressure Port Type

The PSW-190 cylindrical pressure switch has an epoxy-sealed electrical termination. This rugged design enables the switch to withstand harsh environments.

Switch: SPDT, 5 amps at 250 Vac or 30 Vdc gold clad silver contacts for loads down to 5 mA at 6 Vdc, 2 mA at 12 Vdc and 1 mA at 24 Vdc
Operating Ambient Range:
   Buna-N construction: -20 to 75°C (-4 to167°F)
    FKM construction -20 to 80°C (-4 to 176°F)
Media Temp:
   Buna-N construction: 70°C (158°F)
    FKM construction 120°C (248°F)
Wetted Parts: Brass, O-ring and diaphragm
   PSW-191, 192, 195 and 196: ±1%
   PSW-193, 194, 197 and 198: ±1.5%
Shock: Setpoint repeats after 50 g's 10 msec duration
Vibration: Setpoint repeats after 10 g's, 5-500 cps
Enclosure and Cover: Aluminum with irridite finish rated for 100 hr salt spray; potted and gasketed for outdoor use
Pressure Connection:
   PSW-191, 192, 195 and 196: 1/8 NPT
   PSW-193, 194, 197 and 198: 1/4 NPT
Weight: 128 g (4.5 oz)
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Rated 5 out of 5 by from Good value Easy to adjust and install. About as simple and straightforward as one could want.
Date published: 2020-06-18
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I am unsure if this will work for my application. I need a switch that can handle 3000 psi and will close contacts when pressure drops to 200 psi.

Asked by: jdf401
Thanks for your question. The PSW-194 will handle the range and you can set the set-point to trigger anywhere between 180 to 3000 psi, the dead band is 50 to 400 but is NOT adjustable - so it will open and close at any psi to maintain the set-point. Our Tech Support agent has also emailed you to provide further assistance. Please email us back anytime if you have any more questions.
Answered by: Jane
Date published: 2019-05-07
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