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Two small brass valves with yellow caps and 1/4-inch NPT threads

Brass Safety Valve 1/4" NPT 150 PSI 58 SCFM Yellow 2-pack

SKU CH-BA6A-58S7Z

Two brass relief valves open at 150 PSI and flow 58 SCFM to protect air compressors

  • Relieves excess pressure automatically at 150 PSI preset limit
  • High-purity brass resists heat and corrosion across air, water, oil
  • 1/4-inch NPT threads seal tight and install in seconds
  • Compact 35 mm length fits most mainstream compressor models
  • Two valves per pack cover daily use and spare replacement

Brass Safety Valve 1/4" NPT 150 PSI

This brass safety valve is built for air compressors that need automatic pressure relief at 150 PSI. The 1/4-inch NPT thread fits standard compressor ports and the yellow finish makes the valve easy to spot during inspection. It handles air, water and oil discharge in workshop or light-industrial settings. Two valves per pack give a ready spare for continuous operation.

Quick NPT Thread Installation

The 1/4-inch NPT external thread screws directly into the compressor port without adapters. Total length is 35 mm and maximum width is 14 mm, so the valve seats in tight spaces. Brass construction resists galling, yet over-tightening can still strip the softer threads. A common mistake is applying pipe tape to the relief port instead of the inlet thread, which blocks discharge flow.

Steady Flow at Rated Pressure

At the 150 PSI set point the valve opens and passes 58 SCFM, then reseals when pressure falls back into the safe range. The brass body maintains dimensional stability during repeated heat cycles from compressed air. It is not designed for constant blow-down service or for systems that exceed the rated flow capacity. Sustained vibration can loosen the thread over time, so periodic re-torquing is advised.

Highlights

  • Relieves excess pressure automatically at 150 PSI preset limit
  • High-purity brass resists heat and corrosion across air, water, oil
  • 1/4-inch NPT threads seal tight and install in seconds
  • Compact 35 mm length fits most mainstream compressor models
  • Two valves per pack cover daily use and spare replacement

Specifications

BrandFyntave

Questions about this item

How do I confirm the valve opens at 150 PSI and reseats after pressure drops?

Watch the gauge; the valve should discharge when pressure exceeds 150 PSI and stop venting once pressure falls below that threshold.

What comes in the package and what fittings must I supply?

The box contains two brass relief valves with 1/4-inch NPT threads; you need matching 1/4-inch NPT ports or adapters on your compressor.

Should I choose the 58 SCFM yellow model or a different capacity?

Select the 58 SCFM yellow version if your compressor discharge rating is at or below 58 SCFM; otherwise choose a higher-capacity valve.

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