China Gold Supplier for Aisi 4140 Seamless Alloy Steel Pipe With Thin Wall - Hydraulic control check valve – Youfa

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China Gold Supplier for Aisi 4140 Seamless Alloy Steel Pipe With Thin Wall - Hydraulic control check valve – Youfa Detail:

check valve details

Material of main parts:

Parts No. Name Material
A Main Ball Cast Iron, Ductile Iron
B Ball Brass
B1 Ball Brass
C Exhaust Valve Brass
D Ball Brass
G Filter Brass
E Throttle Valve Brass
Vertical installation spring assembly (optional) Stainless Steel

check valve working

Size Dn50-300  ( over Dn300, please contact us. )

Pressure setting range: 0.35-5.6 bar ;  1.75-12.25 bar ;  2.10-21 bar

Working principle

When pump starts, the upstream pressure goes up resulting in pressure increase on the lower side of the main valve membrane. The closing system rises gradually and valve opens slowly. The speed of opening can be adjusted by a needle valve C on the pilot system (located on upper branch of pilot system on scheme above)

check valve Working principle

 

 

 

 

When pump stops or in case of backfoot the downstream pressure goes up resulting in a pressure increase on the upper side of the main valve membrane. The closing system drop down gradually and the valve closes slowly. The speed of the closure can be adjusted by a needle valve C on the pilot system (located on below branch of pilot system on scheme above)

The control valve is function as hydraulic check valve, which opens and closes at a controllable and regulated speed of needle valve, reducing sudden jump in pressure

 

 

Application examples

1. Isolation valve of the by-pass

2a-2b Isolation valves of the main water pipe

3. Rubber expansion joints

4. Strainer

5. Air valve

A .SCT 1001 control valve

check valve application examples

Matters needing attention

1. Strainer should be installed in the upstream of the control valve to ensure good water quality.

2. The exhaust valve should be installed in the downstream of the control valve to exhaust the mixed gas in pipeline.

3. When the control valve is mounted horizontally, the maximum inclination angle of the control valve can not be exceed 45°.


Product detail pictures:

China Gold Supplier for Aisi 4140 Seamless Alloy Steel Pipe With Thin Wall - Hydraulic control check valve – Youfa detail pictures

China Gold Supplier for Aisi 4140 Seamless Alloy Steel Pipe With Thin Wall - Hydraulic control check valve – Youfa detail pictures

China Gold Supplier for Aisi 4140 Seamless Alloy Steel Pipe With Thin Wall - Hydraulic control check valve – Youfa detail pictures


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We believe that long term partnership is a result of high quality, value added service, rich experience and personal contact for China Gold Supplier for Aisi 4140 Seamless Alloy Steel Pipe With Thin Wall - Hydraulic control check valve – Youfa, The product will supply to all over the world, such as: Amsterdam, Iraq, Burundi, We have advanced production technology, and pursuit innovative in goods. At the same time, the good service has enhanced the good reputation. We believe that as long as you understand our product, you need to be willing to become partners with us. Looking forward to your inquiry.
  • A nice supplier in this industry, after a detail and careful discussion, we reached a consensus agreement. Hope that we cooperate smoothly.
    5 Stars By Naomi from Florence - 2016.01.28 19:59
    On this website, product categories is clear and rich, I can find the product I want very quickly and easily, this is really very good!
    5 Stars By Alan from Congo - 2015.12.10 19:03