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Brass air safety valve with half-inch male inlet and three-quarter-inch female outlet, 150 psi rating

Cdi Control Devices

Cdi Control Devices SCB5075-0A150 Air Safety Valve 1/2 In Inlet 150 psi

SKU CH-61E1-TRECE

Air safety valve with 1/2-inch male NPT inlet, 3/4-inch female NPT outlet, 150 psi preset, 586 cfm rated flow, cast brass body, stainless steel spring, silicone O-ring, ASME standard, up to 250°F

  • Product typeTarps
  • 150 psi preset protects downstream equipment
  • 586 cfm rated flow handles high-volume demand
  • Cast brass body with stainless steel spring resists corrosion
  • Soft silicone seat ensures leak-tight seal up to 250 °F
  • ASME-compliant design meets pressure-vessel safety standards

Air safety valve 150 psi

This air safety valve protects compressed-air systems by opening at a preset 150 psi. The 1/2 inch male NPT inlet and 3/4 inch female NPT outlet suit industrial and mobile pneumatic circuits that require ASME-compliant over-pressure relief.

Rated flow 586 cfm

At the set pressure the valve passes 586 cfm, providing ample capacity for typical shop compressors and vehicle air systems. Flow beyond this rating or sustained pressure above 150 psi will exceed the valve’s certified relief capability.

Cast brass body 250 Degrees F

A cast brass body with a stainless steel spring, brass seat and silicone O-ring withstands temperatures up to 250 Degrees F. The lead-sealed soft seat and piped or directed discharge option simplify installation on tanks or headers where safe vent routing is required.

How it compares

Measured against everything we stock in General Hardware & Accessories, at today’s prices. Recalculated every night.

Price $54.99
Pricier than about 75% of the 2,607 comparable items (median $18.99).

Specifications

Product
Brand nameCdi Control Devices
Product typeTarps

Questions about this item

Will the 1/2 in NPT inlet on this SCB5075-0A150 valve thread onto the existing 1/2 in NPT port on my older compressor tank?

Yes, the (M) NPT inlet is 1/2 in, matching standard 1/2 in NPT tank ports on older compressors.

How can I confirm the 150 psi preset is functioning correctly once the valve is installed?

The valve should begin to relieve at 150 psi and flow 586 cfm at set pressure; observe the pressure gauge during a test run to verify opening point.

Does the box include any piping for the 3/4 in NPT outlet or must I supply that separately?

Only the valve with its cast brass body, lead seal, stainless steel spring, brass seat and silicone O-ring is supplied; outlet piping is not included.

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