Self-operated Pressure Regulator is composed of the control valve, actuator and a spring used for pressure setting. It is suitable for controlling input/upstream pressure of valve(when the upstream pressure rises then the control valve is opened) or output/downstream pressure(when the downstream pressure rises then the control valve is closed) in the pipes of non-corrosive liquids, gases and steams. It is widely used in such industries as petroleum, chemical industry, power plant, metallurgy, medicine, food industry, textile, machinery, heating and ventilating, etc.  Trim features: cage guided, balanced trim Body type: straight-through type Bonnet type: standard type Flow characteristic: quick open Size: DN15-300(1/2''-12'') Pressure class: PN1.6, 4.0, 10.0 Mpa(ANSI 150, 300LB, 600LB) Leakage class: ASME B16.104 Ⅴ(soft seal), ASME B16.104 Ⅳ(metal to metal seal) Pipe connection type: flange type Set value error: ±8% Applicable temperature range: -30℃ ～ 250℃ Actuator type: diaphragm actuator(self-operated),piston actuator(self-operated) www.valve-cn.com