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Control Valves

Self-Operated Pressure Control Valve

  • No External Energy Required: Utilizes pipeline's own pressure for regulation, saving energy with simple and low-cost system
  • Constant Pressure Control: Maintains constant pressure differential in the controlled system, ensuring stable operation
  • Supports Autonomous Regulation: Supports internal autonomous regulation of the controlled system, improving system flexibility
  • Absorbs Pressure Fluctuations: Effectively absorbs pressure fluctuations from external network, protecting system equipment
  • Compact Structure: Features dual-valve disc structure with minimal unbalanced force on valve stem and compact design
  • Simple Operation: Simple to set by just rotating the adjustment nut, with easy operation, safety and reliability
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Self-Operated Pressure Control Valve is an energy-saving control valve that requires no external energy source, utilizing the pipeline's own pressure for regulation. The valve is mainly used in heating (air conditioning) water systems to maintain a constant pressure differential in the controlled system, support internal autonomous regulation of the controlled system, and effectively absorb pressure fluctuations from the external network. The self-operated pressure control valve features a dual-valve disc structure with minimal unbalanced force on the valve stem and a compact design. It is widely used in HVAC, water supply and drainage, petrochemical systems, and other applications to achieve automatic stable pressure control in the system.

Technical Standards

Item Technical Standard
Nominal Pressure 1.0, 1.6 MPa
Applicable Media Water, Oil, Non-corrosive Liquids
Operating Temperature ≤100℃
Inherent Flow Characteristic Quick Opening
Minimum Operating Pressure Difference ≥0.01 MPa
Pressure Adjustment Range Customized as required
Connection Type Flanged Connection
Body Material Cast Iron, Cast Steel, Stainless Steel

Basic Models

Model Type Features
ZYC Self-Operated Pressure Control Valve Dual disc structure, constant pressure differential control
SMZZYW Self-Operated Differential Pressure Control Valve Micro-pressure regulation with high control accuracy
ZL47F Self-Operated Flow Control Valve Stable flow with wide adjustment range
ZYF Self-Operated Pressure Balance Valve Pressure balance with significant energy-saving effect

Main Components Material Table

No. Part Name Material
1 Valve Body Cast Iron, Cast Steel, Stainless Steel
2 Valve Disc Stainless Steel, Copper Alloy
3 Valve Stem Stainless Steel, 2Cr13
4 Diaphragm Nitrile Rubber, EPDM
5 Spring Carbon Steel, Stainless Steel
6 Adjustment Nut Carbon Steel, Stainless Steel
7 Valve Cover Cast Iron, Cast Steel
8 Seals Rubber, PTFE

No drawing available.