The 31385693 OEM safety valve from Ingersoll Rand is set to release air pressure if the PSI were to ever reach 200 psi or above. This is a common safety valve that was used on several of Ingersoll Rand's reciprocating air compressors. This safety valve is rated to discharge up to 169cfm.
This is an OEM safety valve from Ingersoll Rand.
Part #: 23474570
Part #: 23474901
Part #: 32174286
Part #: 85582229
Part #: 141-1004
Part #: ST25-200
Part #: ST25-175