This 1/4" MNPT safety relief valve is constructed with the same materials as ASME safety valves, but is not national board certified so they cannot be used on applications requiring ASME components. The non-coded valve is equipped with a lift ring for instant relief and is stacked at the factory at the pre set pop-off pressure. Has a pop-off pressure of 150 PSI. These valves are not for use on compressors with a capacity over 15 CFM, 3 HP or 12 gallon storage tank.

• 1/4" MNPT inlet – standard male national pipe thread for easy connection
• 150 PSI pop-off pressure – factory preset for reliable over-pressure protection
• Lift ring – allows instant manual relief & testing
• 1-5/8" total length – compact design for tight installations
• Constructed with ASME-grade materials – high-quality, but non-coded (not ASME certified)
• Safe for compressors up to 15 CFM, 3 HP, or 12-gallon tank – ideal for small to medium air systems
• Prevents tank rupture & equipment damage – essential safety device
• Perfect for shop air compressors, garage setups, automotive & general pneumatic use
• Milton quality – durable & trusted by professionals