1/4" NPT Air Pressure Switch

Midland-ACS 1/4" NPT Air Pressure switch. A compact fully adjustable pneumatically operated 316L stainless steel pressure switch with operating pressures up to 16 bar (232) psi. For use on fail-safe systems.

Features and Benefits:

  • Specifically designed for severe environments
  • Compact and lightweight
  • Up to 5 Pressure Ratings
  • Tagging Facility
  • Fluoroelastomer seals
  • 3/2 and 5/2 Versions
  • Ambient temperature range -20 ºC to +80º C
  • Low temperature option available
  • NACE standard on application
  • PED Certified 1/4” only

Working Temperature Range:

  • Valve only version -20 to +80 ºC (-4 to +176 ºF)
  • Low temperature version -50 to +90 ºC (-58 to +194 ºF optional)

Working Pressure (for main directional valve):

  • 12 bar (174 psi) maximum

Maximum Pilot Pressure Inlet:

  • 16 bar (232 psi)

Pressure setting hysteresis:

  • 0.25 bar (3.63 psi)

Ports NPT (BSP option available):

  • 1/4” - 1/2” NPT line port
  • 1/8” NPT pilot port

Operating Media:

  • Gases - filtered lubricated or non-lubricated
  • Air, inert gas, sweet (natural) gases
  • Sour gas option available

Construction Materials:

  • Body: 316L Stainless Steel
  • Spool: 316L Stainless Steel
  • Spring: 316 Stainless Steel
  • Seals: Fluoroelastomer
  • Diaphragm: Fluoroelastomer

Maximum Flow:

At 6 bar, 1 bar differential:

  • 1/4” 3/2 Valves - 1000 L/Min (35.3 SCFM)
  • 1/4” 5/2 Valves - 1200 L/Min (42.4 SCFM)
  • 1/2” 3/2 Valves - 3500 L/Min (123 SCFM)
  • 1/2” 5/2 Valves - 3500 L/Min (123 SCFM)

See Rotork Midland Ancillaries Catalogue for further details

4500 Series Air Pressure Switch
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