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800X Differential Pressure (Bypass) Valve

  • Model：800X-10/800X-16/800X-25/800X-10Q/800X-16Q/800X-25Q/800X-10P/800X-16P/800X-25P/800X-10T/800X-16T/800X-25T
  • Specification：DN50~DN600
  • Temperature：≤80℃
  • Medium：Water and water-like media
  • Pressure：PN10~PN25
  • Connection method：flange
  • Driving method：Spring, automatic
  • Material：cast iron, cast steel, stainless steel, copper
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  • Product Overview
  • Performance Data
  • Size Weight

Product Introduction

The differential pressure (bypass) valve produced by our company is mainly applied between the water supply and return pipes of air conditioning systems. It maintains a fixed differential pressure between supply and return water, improves system energy efficiency, reduces noise, and prevents damage to system equipment caused by excessive differential pressure. The valve is mainly composed of a main valve and a differential pressure pilot valve.

800X Differential Pressure (Bypass) Valve

800X Differential Pressure (Bypass) Valve Structural Diagram

Parts and Materials List

Part NameMaterial
Valve CoverCopper, Stainless Steel
SpringStainless Steel
DiaphragmReinforced Rubber
Valve DiscCopper, Stainless Steel
Seal RingReinforced Rubber
Valve SeatCopper, Stainless Steel
Valve BodyCopper, Stainless Steel



Technical Parameters

DN：DN50～600mm            Seal Test：1.1 times the nominal pressure

PN;1.0/1.6Mpa                 Shell Test ：1.5 times the nominal pressure

Operating Temperature：0℃～80℃

Reference Standards

Flange Connection:GB/T17241.6-1998Integral Cast Iron Pipe Flanges
Material:GB12225-89General Valves - Specifications for Copper Alloy Castings
GB12226-89General Valves - Specifications for Gray Iron Castings
GB12227-89General Valves - Specifications for Ductile Iron Castings
Test:ISO5208Industrial Valves—Pressure Testing

800X Differential Pressure (Bypass) Valve Outline Dimension Drawing


800X Differential Pressure (Bypass) Valve Outline Dimension Table

DND1D2n-фdLH
1.0MPa1.6MPa1.0MPa1.6MPa1.0MPa1.6MPa
501651254-19230395
651851454-19250405
802001608-19270430
1002201808-19320510
1252502108-19370560
1502852408-23410585
2003402958-2312-23480675
25039540535035512-2312-28580730
30044546040041012-2312-28690760
35050552046047016-2316-28780840
40056558051552516-2816-31860910
45061564056558520-2820-31910910
50067071562065020-2820-34980750


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