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Self-powered pressure balance control valve without external energy, using the energy of the regulated medium as the power source, the introduction of the actuator control valve core position, change the pressure difference and flow at both ends, so that the valve (or after the valve) pressure stability.It has the advantages of sensitive action, good sealing, small fluctuation of pressure set point, etc. It is widely used in the automatic control of pressure relief and pressure stabilization of gas, liquid and steam media.

Product type: ZZY
Nominal diameter: DN20-DN300mm
Nominal pressure: ANSI150, 300, 600LB JIS10, 16, 20, 30, 40K PN1.6, 2.5, 4.0, 6.4mpa
Connection mode: FF, RF, RJ and LG
Flange standard: ANSI B16.5, JIS B2201 JB/T79.1 PN1.6mpa,JB/T79.2
Thread: DIN, NPT, RC, BSP, G, etc
Welding: GB12224-89
Sealing surface: PN16 convex, PN40, PN63, PN100 concave
Material: WCB, WCC, WC6, 304, 316, 304L, 316L
Upper bonnet: Standard (-20℃ ~ +200℃) Cryogenic (-60℃ ~ -196℃) cooling (-40℃ ~ 450℃),Bellows seal type
Gland type: platen type
Filling material: V-type fluorotetrafluoroethylene, flexible graphite