Y43-C Carbon Steel, Y43-B Stainless Steel Series Flange Connection Piston Pressure Reducing Valve-China top 10 valve Manufacturers, Suppliers, Factory

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Y43-C Carbon Steel, Y43-B Stainless Steel Series Flange Connection Piston Pressure Reducing Valve

Y43-C Carbon Steel, Y43-B Stainless Steel Series Flange Connection Piston Pressure Reducing Valve

Product documents:

【Sample】BEST-Y43-C Carbon Steel, Y43-B Stainless Steel Series Flange Piston Type Pressure Reducing Valve.pdf

File size: 213.4KB
【Instruction Manual】BEST-Y43-C Carbon Steel, Y43-B Stainless Steel Series Flange Piston Type Pressure Reducing Valve.pdf

File size: 820.7KB

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Product Details

Features

01. Diameter range: DN15～500, The flow direction should be the same as the arrow direction on the valve body,can be installed at any

angle, and the ball valve is installed downward to
02. Applicable medium temperature: Carbon steel Vb: -29～300℃, stainless steel Ve: -40～300℃
03. Nominal pressure: Normal PN16bar, special PN25, 40, 63, 100, 160bar
04. Disc sealing material: Carbon steel valve body normal alloy steel (code: H), special cemented carbide (code: Y)
stainless steel valve body normal body material (code: W), special carbide (code: Y)
05. Body material: Cast steel WCB (code: C), SS304 (code: B), SS316 (code: R), SS316L (code: L)
06. It is mainly used for depressurization and stabilization of steam pipelines, and can only be dynamically reduced

Component Material Table

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

Structure Diagram (PN16bar)

Working Principle

Initial state: The main valve disc 04 is closed under the force of the main valve spring 03, and the pilot valve disc 09 is under the force of the pilot valve spring 08 off state.
Set the outlet pressure: The outlet pressure can be adjusted by adjusting the bolt 15, and the outlet pressure of the adjusting bolt 15 can be increased by rotating down clockwise, counterclockwise rotate the adjustment bolt upwards 15 outlet pressure is reduced. After setting the outlet pressure, the pilot disc 09 opens under the thrust of the adjusting spring 13.
Pressure reduction and pressure stabilization process: The imported medium flows into the upper cavity of the piston through the pressure taking hole B, the pilot valve port and the pressure taking hole C, and the pressure of the upper cavity of the piston increases, and the piston push the stem down so that the main disc 04 opens, and the medium flows into the back of the valve. The medium after the valve flows into the lower cavity of the piston through the pressure taking hole A, and the medium in the lower cavity of the piston is pressed increased force. The medium after the valve flows into the lower cavity of the piston at the same time as it flows into the lower cavity of the diaphragm of the pilot valve through the pressure taking hole D, and the medium pressure of the lower cavity of the diaphragm pushes the membrane upward piece 12, the pilot disc 09 moves upward under the force of the pilot valve spring 08, the opening of the pilot valve decreases, and flows into the medium of the upper cavity of the piston through the pressure taking hole C reduced,resulting in a decrease in the pressure of the medium in the upper chamber of the piston. Under the action of the main valve spring 03 and the medium pressure of the piston lower cavity, the opening of the main disc 04 decreases, until the outlet pressure reaches the preset value (at this time, adjusting spring force and the pressure of the medium after the valve to balance). Since the main disc 04 is hard and tight seal, there is a leakage amount, if the globe valve after the pressure reducing valve is closed, the pressure behind the valve will rise to the inlet pressure, so it can only be dynamically reduced and stabilized, static regulation is not possible.

Main Technical Parameters&Performance Index

External Dimension

Notes:

The flange is manufactured according to JB/T79-1994 standard by default, and can also be manufactured according to user-specified standard, such as GB/T9124, HG/T20592, ANSI, JIS, DIN, etc.
KV value is the value of the maximum opening of the valve disc.