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CV3000 Pneumatic diaphragm regulating valve

Nominal diameterDN20 ~ DN400

Nominal pressure1.6  4.0  6.4MPa

Working temperature-40~230°

Flange formJB79-59

Connecting materialZG25I、ZG1Cr18Ni9Ti、

Product overview

CV3000 series pneumatic diaphragm single seat regulating valve is a top guide single seat regulating valve, which has the characteristics of simple structure, good sealing performance, large flow and reliable use. The effective and sufficient top guide system overcomes the vibration when the opening is small, and the effective service life is longer. Multi spring pneumatic membrane mechanism or electric actuator can be selected.

Product parameters

The valve body is a constant cross-section low flow resistance channel designed according to the principle of hydrodynamics, and the rated flow coefficient is increased by 30%.

The adjustable range is large, the inherent adjustable ratio is 50, and the flow characteristics have straight line and equal percentage.

The regulating cut-off type adopts soft sealing structure valve core, which meets the class VI leakage standard (zero leakage)

Valve body and bonnet: HT200, zg230-450, zg1cr18ni9ti

Valve core and valve seat: 1Cr18Ni9Ti, stellite alloy surfacing

Soft sealing valve core: Reinforced Polytetrafluoroethylene

Packing: PTFE, flexible graphite

Bellows: 1Cr18Ni9Ti

Gasket: Rubber asbestos plate, 10, 1Cr18Ni9Ti, asbestos spiral wound gasket

Membrane cover: A3

Corrugated diaphragm: nitrile rubber clip reinforced polyester fabric

Spring: 60simn

Valve stem and push rod: 2Cr13, 1Cr18Ni9Ti

Bushing: 2Cr13