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

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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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We believe that long time period partnership is a result of top of the range, value added services, rich expertise and personal contact 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, Sevilla, Vancouver, With top quality products, great after-sales service and warranty policy, we win trust from many overseas partner, many good feedbacks witnessed our factory's growth. With full confidence and strength, welcome customers to contact and visit us for future relationship.
  • The goods are very perfect and the company sales manager is warmful, we will come to this company to purchase next time.
    5 Stars By Natividad from Sevilla - 2015.06.26 19:27
    This is a honest and trustworthy company, technology and equipment are very advanced and the prodduct is very adequate, there is no worry in the suppliment.
    5 Stars By Mag from Azerbaijan - 2015.09.12 17:18