Air Compressor Safety Relief Valves
These little valves save lives! They keep your air compressor tank from bursting should your pressure switch stop working. Usually, you want a valve rated 30 PSI higher than your pressure switch cut-out pressure. To determine the size of the end that fits into the tank, measure the OD (Outside Diameter) of the threads, then subtract 1/4" because pipe sizes always measure 1/4" over the actual size.
Click here to find out how to troubleshoot a safety relief valve.

This is what happens when you remove your safety relief valve and insert a plug instead!
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Safety Relief Valve 1" MPT, 200 PSI #1162DC
Price: $57.64Old Part Numbers: SRV765200, SRV765-1Safety Valve, 200 psiPrice: $57.64 -
On Sale
Air Compressor Safety Relief Valve, 1/4" MPT, 140 PSI #116341
Now: $8.95Was: $17.96Old Part Numbers: SRV250140Air Compressor Safety Relief Valve. 1/4" MPT, 140 PSI. If your valve leaks below the pressure listed on the side of the valve, replace this vital safety feature.Specifications MPT Inlet: 1/4 in. FPT Outlet: 3/8 in. Preset...Now: $8.95Was: $17.96 -
Safety Relief Valve 3/4" MPT, 175 PSI #116338
Price: $38.40Old Part Numbers: SRV530175, SRV530-3/4If your valve leaks below the pressure listed on the side of the valve, replace this vital safety feature.Price: $38.40 -
Safety Relief Valve 3/4" MPT, 250 PSI #11633A
Price: $38.40Old Part Numbers: SRV530250, SRV530-3/43/4" MPT, 250 PSI.Price: $38.40 -
Safety Relief Valve 3/4" MPT, 135 PSI #116337
Price: $38.40Old Part Numbers: SRV530135, SRV530-3/43/4" MPT, 135 psi. If your valve leaks below the pressure listed on the side of the valve, replace this vital safety feature.Price: $38.40 -
On Sale
Safety Relief Valve, 1/4" MPT, 135 PSI #11634A
Now: $8.95Was: $24.56Old Part Numbers: SRV250135, 1229W-135If your valve leaks below the pressure listed on the side of the valve, replace this vital safety feature. 1/4" MPT 135 PSI SpecificationsSafety Valve, MPT Inlet (In.) 1/4 in, FPT Outlet (In.) 3/8 in, Preset Setting...Now: $8.95Was: $24.56 -
Safety Relief Valve 3/4" MPT, 225 PSI #116339
Price: $38.40Old Part Numbers: SRV530225, SRV530-3/43/4" MPT, 225 PSI.Price: $38.40 -
Safety Relief Valve 1-1/4" MPT, 125 PSI #116362
Price: $73.84Old Part Numbers: SRV1250125, SRV125-1-1/4Safety Valve, 125 psi, 1 1/4" MPT.Price: $73.84 -
Safety Relief Valve 1-1/4" MPT, 175 PSI #116365
Price: $73.84Old Part Numbers: SRV1250175, SRV125-1-1/4Safety Valve, 175 psi, 1 1/4" MPT.Price: $73.84 -
Safety Relief Valve 1-1/4" MPT, 150 PSI #116364
Price: $73.84Old Part Numbers: SRV1250150, SRV125-1-1/4Safety Valve, 150 psi, 1 1/4" MPT.Price: $73.84 -
Safety Relief Valve 1-1/4" MPT, 200 PSI #116366
Price: $20.42Old Part Numbers: SRV1250200, SRV125-1-1/4Safety Valve, 200 psi, 1 1/4" MPT.Price: $20.42 -
On Sale
Safety Relief Valve, 1/4" MPT, 125 PSI #116349
Now: $8.95Was: $12.48Old Part Numbers: SRV250125, 1229W-125Air compressor safety relief valve, 1/4" MPT, 125 PSI. If your valve leaks below the pressure listed on the side of the valve, replace this vital safety feature.Specifications MPT Inlet: 1/4 in. FPT Outlet: 3/8 in...Now: $8.95Was: $12.48