YQ43-C Carbon Steel, YQ43-B Stainless Steel Series Piston Gas Pressure Reducing Valve (Flanged Type)-China top 10 valve Manufacturers, Suppliers, Factory

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YQ43-C Carbon Steel, YQ43-B Stainless Steel Series Piston Gas Pressure Reducing Valve (Flanged Type)

YQ43-C Carbon Steel, YQ43-B Stainless Steel Series Piston Gas Pressure Reducing Valve (Flanged Type)

Product documents:

【Sample】BEST-YQ43-C Carbon Steel,YQ43-B Stainless Steel Piston Type Gas Pressure Reducing Valve (Flange Type).pdf

File size: 210.8KB
【Instruction Manual】BEST-YQ43-C Carbon Steel,YQ43-B Stainless Steel Series Flanged Type Piston Type Gas.pdf

File size: 646.2KB

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Product Details

Features

01. Diameter range: DN15～300, the medium flow direction must be consistent with the direction of the arrow on the valve body, and it

must be installed vertically
02. Applicable temperature: Normal Ib: -9～80℃ (NBR sealing) special Ⅱb: -29～120℃ (PTFE, alloy steel, body material)
03. Nominal pressure: Normal PN16bar, special PN10, 25, 40, 63, 100, 160bar, 150, 300, 600, 900, 1500Lb
04. Valve disc sealing material: Normal nitrile rubber (NBR, code: N), special fluoroplastic (PTFE, code: P)
hard sealing---alloy steel (code: H), body material (code: W)
05. Body material: Cast steel WCB (code: C), SS304 (code: B), SS316 (code: R), SS316L (code: L)
06. Mainly used for gas pipelines, such as air, nitrogen, oxygen, natural gas, etc., to play the role of reducing pressure and stabilizing pressure
07. The difference between the inlet pressure and the outlet pressure of this valve must be ≥1.5bar to work normally,and the factory configur-

ation has 1 pressure gauge at the inlet and outlet

Component Material Table

Note: ◇---valve disc sealing material, □---nominal diameter.

Structure Diagram

Working Principle

When this valve leaves the factory, the main valve and pilot valve are closed. When using, rotatethe adjustment clockwise bolt 10, top open pilot disc 16, medium enters the pilot valve cavity fromthe "A" channel into the "S" channel, by the medium pressure pushes the piston 02 to open the maindisc 07, and the medium flows to the back of the valve, and at the same time passes by "B" the tractenters the sub diaphragm cavity. When the pressure after the valve exceeds the set pressure, push the diaphragm 13 compression adjusting spring 12, the pilot valve gradually closes, the medium flowing into the upper part of the piston decreases, and the piston 02 rises so that the maindisc 07 under the action of the main valve spring 08, is gradually closed, the medium flowing to thevalve before the valve is reduced, and the pressure after the valve is reduced decline. A small change in the pressure at the rear of the valve affects the balance of the diaphragm and the adjusting spring, causing the diaphragm to move up and down move, push the pilot valve and piston to work, causingthe main disc to move up and down to control the flow of media to make the valve. The post-pressure tends to an equilibrium value.

Main Technical Parameters&Performance Index

External Dimension

Note: The flange is manufactured according to JB/T79-1994 standard by default, and can also be manufactured according to user-specified
standards, such as GB/T9124, HG/T20592, ANSI, JIS, DIN, etc.