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Call us at 1-888-826-6342.

OEM Mechanical Pressure Switch with High Purity

0.8 to 30 psi, fixed deadband


Item# PSW-691-N1

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-24 $170.55
25-49 $162.02
50-99 $158.61
100-199 $151.79
200+ $148.38

In stock

Lead Time (If not in stock): 3 weeks
0.8 to 30 psi, fixed deadband PSW-691-N1 PSW-691-N1
  • All Stainless Steel Wetted Parts
  • Sensing Element Capsule, Electron Beam Welded
  • Helium Leak Tested 4 x 10-9 STD CC/sec
  • External Pressure Scale and Pointer For Easy Set Point Adjustment

PSW-691-N1 Model Options

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Switch Type
Pressure Range
Pressure Type
Pressure Port Size
Pressure Port Type

  • Enclosure Rating NEMA 4
  • Maximum Rating 5
  • Other Features High Purity
  • Pressure Type Gauge
  • Pressure Units PSIG
  • repeatability +/-0.6 to 10 psi
Process Temp: -54 to 107°C (-65 to 225°F); setpoint change of up to 2% of sensor capacity may be anticipated when switch is used either below -23°C or above 51°C
Cycling: Not to exceed 20 cycles/min, 1 million cycles
Proof Pressure: 150% max pressure
Wetted Parts: 17-7 PH electron beam welded, 303 SS fitting
Enclosure: 303 Stainless Steel body, zinc alloy with chromate finish locking ring and switch housing, valox cap
Dimensions: 51 L x 29 mm Dia (2 x 1.125') with NPT fitting; 60 L x 29 mm Dia (2.375 x 1.125') with VCR fitting
Weight: Approx. 85g (3 oz)
Pressure Port: 1/8-27 MNPT or 1/4 VCR
Electrical: 300 mm (12') pigtail leads, 20 AWG, polyvinyl insulated
Wiring Code:
   Pressure Switch: Black = Common, Red = N/C, White = N/O
   Vacuum Switch: Black = Common, Red = N/O, White = N/C
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