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Water Control Solutions

Explosion-Proof Pressure Switch – Model PS-12

The PS-12 Pressure Switch is for use in conjunction with BERMAD Deluge or other types of water control valves, to indicate discharge water pressure. This Pressure Switch offers reliability, repeatability and durability in a compact design. It is ideal for operation under the harsh conditions of DIV.1 or Zone 1 (II 2 G/D EEx d IIC T6 Certified) hazardous locations. At the heart of the PS-12 is a snap action Belleville spring assembly, which transfers motion to a hermetically sealed 5 amp vibration resistant microswitch. Applications: Chemical plants, refineries, gas and petroleum installations, offshore and marine vessels.

Features and Benefits:


  • Stainless Steel construction
  • Vibration resistant technology
  • Hermetically sealed switch enclosure
  • Convenient field adjustments
  • Global approvals for hazardous locations
  • Strain relief, high over pressure
  • Mechanical contact lifecycle: 10 million cycle


  • UL Listed for hazardous locations

Class I Div.1 & 2

  • CENELEC Certified to ATEX directive

II 2 G/D EEx d IIC T6

  • CSA Certified for Class I, Zone 1, Group IIC
  • IP66 Certified


  • Wetted parts: Stainless Steel 316
  • Option: Monel 400
  • Hausing: Stainless Steel 316
  • Diaphragm: Teflon® coated polyamide
  • O-ring: NBR (Buna-N)
  • Optional: Aluminum terminal box

End Connections

  • Pressure: 1/2” NPT (F)
  • Electric: 1/2” NPT (M)

FP PS 12 Product Page English