Description
self-operated after-valve pressure regulator is composed of the control valve, actuator and a spring used for pressure setting. It is suitable for controlling after-valve pressure in the pipes of non-corrosive liquids, gases and vapors. When the after-valve pressure rises, the control valve is closed.

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、4.0Mpa（ANSI 150、300LB）
Leakage class： ASME B16.104 Ⅴ（soft seal）
ASME B16.104 Ⅳ（hard seal）
Pipe connection type： flange type
Set value error： ±8%
Applicable temperature range： -30C° ～ 250C°
Actuator type： diaphragm actuator（self-operated）
piston actuator（self-operated）