Hot Sale for Erw Galvanised Steel Pipe - Hydraulic control check valve – Youfa

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Our business promises all users of the first-class items and the most satisfying post-sale company. We warmly welcome our regular and new prospects to join us for Bs1387 Class B Galvanized Steel Pipe, Dn50 Hot Dipped Galvanized Steel Pipe, 900mm Seamless Carbon Steel Pipe, We persistently develop our enterprise spirit "quality lives the business, credit score assures cooperation and retain the motto inside our minds: consumers very first.
Hot Sale for Erw Galvanised Steel Pipe - 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:

Hot Sale for Erw Galvanised Steel Pipe - Hydraulic control check valve – Youfa detail pictures

Hot Sale for Erw Galvanised Steel Pipe - Hydraulic control check valve – Youfa detail pictures

Hot Sale for Erw Galvanised Steel Pipe - Hydraulic control check valve – Youfa detail pictures


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With our loaded encounter and considerate services, we have now been recognized as a trustworthy supplier for lots of worldwide consumers for Hot Sale for Erw Galvanised Steel Pipe - Hydraulic control check valve – Youfa, The product will supply to all over the world, such as: Poland, Detroit, Macedonia, Our products are exported worldwide. Our customers are always satisfied with our reliable quality, customer-oriented services and competitive prices. Our mission is "to continue to earn your loyalty by dedicating our efforts to the constant improvement of our items and services in order to ensure the satisfaction of our end-users, customers, employees, suppliers and the worldwide communities in which we cooperate".
  • We have been engaged in this industry for many years, we appreciate the work attitude and production capacity of the company, this is a reputable and professional manufacturer.
    5 Stars By April from Netherlands - 2015.08.12 12:27
    The sales manager has a good English level and skilled professional knowledge, we have a good communication. He is a warm and cheerful man, we have a pleasant cooperation and we became very good friends in private.
    5 Stars By Karen from Suriname - 2016.04.28 15:45