The General Pump YRV2063 is a safety relief valve designed to protect your pump from excessive pressure. Constructed with a brass housing, stainless steel internal components, and Buna-N seals. Inlet connection measures 3/8 inch with NPT-M threading. The valve tolerates a maximum pressure of 2000 PSI and a flow rate of 6.3 GPM. Its dimensions measure 1" x 3.1".