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

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Our growth depends around the superior machines, exceptional talents and consistently strengthened technology forces for 6 Inch Round Gi Pipe, Steel Pipe, Carbon Spiral Steel Pipe, Because we stay in this line about 10 years. We got best suppliers support on quality and price. And we had weed out suppliers with poor quality. Now many OEM factories cooperated with us too.
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 emphasize enhancement and introduce new solutions into the market just about every year for Hot Sale for Erw Galvanised Steel Pipe - Hydraulic control check valve – Youfa, The product will supply to all over the world, such as: Karachi, UK, Costa rica, The company has perfect management system and after-sales service system. We devote ourselves to building a pioneer in the filter industry. Our factory is willing to cooperate with different customers domestic and overseas to gain better and better future.
  • It's really lucky to find such a professional and responsible manufacturer, the product quality is good and delivery is timely, very nice.
    5 Stars By Eileen from Frankfurt - 2016.04.18 16:45
    The factory technical staff not only have high level of technology, their English level is also very good, this is a great help to technology communication.
    5 Stars By Gary from Czech Republic - 2015.09.21 11:01