Fisher 630R Relief Valve
Type 630R is a general relief valve available in NPS 1 & 2 / DN 25 & 50 body sizes for compressor stations, refineries and similar plants requiring backpressure gas regulation settings up to 250psi/7,2bar. Available in high & low pressure constructions. Low pressure units have larger diaphragm areas to provide accurate control in low pressure settings. High-pressure units can withstand inlet pressure up to 550psi/37,9bar and can control pressures up to 250 psi/17,2bar.