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Small brass air safety valve with 1/4 inch NPT inlet, preset 125 psi, includes four color coded springs

Cdi Control Devices

Cdi Control Devices NC25-1UK002 Air Safety Valve 125 psi

SKU CH-65A8-9MYB9

1/4 NPT brass air safety valve preset to 125 psi with silicon rubber seal and stainless steel spring

  • Preset 125 psi relief protects downstream equipment from over-pressure
  • Brass body and stainless steel spring resist corrosion for long service life
  • Vibra Seal thread coating seals NPT connections without extra tape
  • Silicon rubber soft seat delivers bubble-tight shut-off at set pressure
  • Four colour-coded springs included allow quick re-calibration to other pressures

Purpose and fit

The Cdi Control Devices NC25-1UK002 is a brass-bodied air safety valve preset to 125 psi for compressed-air systems. It serves installers and maintenance teams who need a reliable over-pressure release on lines rated up to 200 psi.

Installation context

The valve threads into a 1/4 in male NPT port and uses a Vibra Seal coating to resist loosening under vibration. Its soft silicon rubber seat and stainless steel spring help maintain a tight seal until the set pressure is reached, reducing nuisance venting during normal cycling.

Sustained-load behaviour

Rated for continuous exposure to 250 Degrees F, the valve maintains consistent crack pressure during extended duty cycles. Four colour-coded springs are included for field adjustment, though the factory preset covers the 25 to 200 psi range without rework.

Highlights

  • Preset 125 psi relief protects downstream equipment from over-pressure
  • Brass body and stainless steel spring resist corrosion for long service life
  • Vibra Seal thread coating seals NPT connections without extra tape
  • Silicon rubber soft seat delivers bubble-tight shut-off at set pressure
  • Four colour-coded springs included allow quick re-calibration to other pressures

Specifications

BrandCONTROL DEVICES

Questions about this item

At what pressure does the 125 psi preset valve begin to relieve?

The valve is preset to open at 125 psi and is adjustable within a 25 to 200 psi range using the included colour-coded springs.

What is the maximum operating temperature for continuous daily use?

The brass body, silicon rubber seal and stainless steel spring are rated for a maximum temperature of 250 degrees Fahrenheit.

Which inlet thread must my compressor or air line provide for this valve?

The valve has a 1/4 inch male NPT inlet, so the mating port must be a 1/4 inch female NPT thread.

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