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  • ZYS Self-Operated Pressure Reducing Valve Assembly

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ZYS Self-Operated Pressure Reducing Valve Assembly

ZYS Self-Operated Pressure Reducing Valve Assembly

  • Model:zys-16C/zys-40C/zys-64C/zys-16P/zys-40P/zys-64P
  • Specification:DN20-DN300
  • Temperature:≤425 ℃
  • Medium:Water, steam, oil and similar liquids
  • Pressure:PN16,PN40,PN64
  • Connection method: Flange
  • Driving method:Automated
  • Material:Cast Steel、Stainless Steel
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ZYS Self-Operated Pressure Reducing Valve AssemblyOverview

ZYS Self-Operated Pressure Reducing Valve Assembly Overview

The ZYS Self-Operated Pressure Reducing Valve Assembly is an integrated pressure regulation unit composed of a main pressure reducing valve, upstream and downstream shut-off valves, a filter, pressure gauges, and pipeline accessories. This valve assembly operates on a self-actuated principle, requiring no external power source. It utilizes the medium's own pressure changes to drive the main valve for automatic adjustment, achieving stable reduction of inlet pressure. The valve body is constructed from cast steel or stainless steel and is equipped with precision filtration and dual pressure monitoring. It is suitable for steam, gas, and liquid media. This integrated design simplifies on-site installation and enhances system reliability, making it widely used in pipelines requiring stable pressure reduction and system protection, such as in petrochemical plants, heating systems, industrial boilers, and power plants.

ZYS Self-Operated Pressure Reducing Valve Assembly Product Image

ZYS Self-Operated Pressure Reducing Valve AssemblyCharacteristic

ZYS Self-Operated Pressure Reducing Valve Assembly Features

1. Integrated design for easy installation: Combines functions such as pressure reduction control, filtration monitoring, and shut-off protection into a single unit, reducing on-site pipeline welding and assembly efforts and improving installation efficiency.

2. Self-operated regulation with stable and reliable performance: The main pressure reducing valve employs a direct-acting or pilot-operated self-actuated structure, offering sensitive response and enabling precise automatic pressure adjustment without external power.

3. Comprehensive multiple protection functions: Equipped with an inlet filter to prevent clogging by impurities, upstream and downstream shut-off valves for convenient maintenance isolation, and dual pressure gauges for real-time monitoring of inlet and outlet pressures, ensuring safe system operation.

4. Easy maintenance and optimized costs: The modular structural design allows independent operations such as filter cleaning, valve inspection, and instrument replacement, reducing maintenance difficulty and downtime.

5. Wide range of applications: Can be custom-configured for steam, compressed air, nitrogen, liquefied gas, and various liquid media, meeting pressure reduction and stabilization requirements across different industrial scenarios.

ZYS Self-Operated Pressure Reducing Valve Assemblystructure principle

ZYS Self-Operated Pressure Reducing Valve Assembly Structure Diagram

Parts Name Material List

NO.NameMaterial
1bodyZG230-450、ZG1Cr18Ni9Ti 、ZGCr18Ni12Mo2Ti
2stem1Cr18Ni9Ti 、Cr18Ni12Mo2T
3Diaphragm CoverA3 Steel Coated with Teflon (PTFE), A3 Stainless Steel
4packingNBR、EPDM、FKM、Oil-Resistant Rubber
5disc1Cr18Ni9Ti 、Cr18Ni12Mo2Ti
6seat1Cr18Ni9Ti 、Cr18Ni12Mo2Ti


ZYS Self-Operated Pressure Reducing Valve Assemblytechnology parameter
Performance Specification
Nominal Pressure1.6/4/6.4Mpa
Shell Test2.4/6/9.6
Seal Test1.76/4.4/7.04
Suitable Temp.≤80


ZYS Self-Operated Pressure Reducing Valve Assemblystandard size

Dimensions Standard Requirements

1. The structural length of the valve shall conform to the standard GB/T12250.

2. The connecting flange shall conform to the standard GB/T 79.

ZYS Self-Operated Pressure Reducing Valve Assembly View Drawing

ZYS Self-Operated Pressure Reducing Valve Assembly Dimensions Table

公称通径(DN)20253240506580100125150200
LPN16、40150160180200230290310350400480600
PN64230230260260300340380430500550650
B2333323735226739801200
H压 力 调 节 范围15~140475520540710780840880915
120~300455500520690760800870880
280~500450490510680750790860870
480~1000445480670740780850860
600~15004455706008208909509501000
1000~2500445570 600 820 890 950 950 1000
A压 力 调 节 范围15~140Ф282Ф308
120~300Ф232
280~1000Ф196Ф196Ф282
600~2500Ф85 Ф96