Pneumatic Diaphragm Bellows Control Valve

The pneumatic bellows-sealed control valve consists of a multi-spring pneumatic diaphragm actuator and a bellows-sealed valve body. The valve bonnet employs a dual sealing system combining a bellows and packing, fundamentally eliminating the possibility of media leakage. It is suitable for flow and pressure control of highly corrosive, flammable, explosive, volatile, toxic, or valuable media, and can also be used in vacuum applications.

Detail

Parameters

Valve Model: ZJHB

Nominal Diameter: DN25 to DN300mm

Structure Type: Single-seat, Cage-guided, Sleeve-balanced valve plug

Body Material: Cast Steel (WCB), Stainless Steel (304, 316, 316L)

Nominal Pressure: PN16, PN40, PN64

Operating Temperature: Bellows-sealed type -40°C to +350°C

Application Scope: Flammable, explosive, volatile, toxic, or valuable media

Product Features: Eliminates media leakage, excellent sealing performance, extended service life

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