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ZZYVP Series Pilot-operated Self-operated Pressure Regulating Valve (Nitrogen-sealed Valve)

· Compact structure with S-shaped flow path and low pressure drop

· Wide adjustable range and high-precision flow characteristics

· Excellent dynamic stability, low noise, and anti-cavitation design

· Large spool guide area enhances vibration resistance

· Complies with GB/T4213-2008 standard

· Suitable for high-temperature and low-temperature fluid control

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Product Details

Precision in Flow Control, Excellence from Zhongyuan

Product Features
Valve Body Component Selection
Structural Configuration

Product Features

Compact valve body with S-shaped flow path and guide vanes prevents turbulence
Low pressure drop, high flow rate, wide adjustable range, high-precision flow characteristics
Quick-change seat, integrated cage and guide bushing ensure low leakage
Bellows in upper bonnet provide dual stem sealing to eliminate external leakage
Multi-spring diaphragm actuator ensures compact structure, small size and high output force

Valve Body Component Selection

Function type	Type B
Nominal diameter	DN15mm-100mm (1/2" - 4")
Flow characteristics	Quick opening
Regulation accuracy	±5%
Temperature limit	≤160℃
Pressure reduction ratio	Max 4000:1
Nominal pressure	PN Series: 1.6,2.5,4.0,6.3MPa; Class Series: Class150,300,600
Connections	Flanged, Welded, Threaded
Flange standard	PN1.6MPa: GB/T9113.1; PN4.0/6.3/10.0MPa: GB/T9113.2
Sealing face	PN1.6MPa: Raised face (RF); PN4.0/6.3/10.0MPa: Flat face (F)
Face-to-face	Per GB12221-2005
Body/bonnet material	WCB, WC9, CF8, CF8M
Actuator type	Diaphragm
Diaphragm material	NBR with polyester fabric, EPDM, FKM, Oil-resistant rubber, PTFE
Surface coating	Light coffee (Epoxy resin). No coating for stainless steel body.

Structural Configuration

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