Hot Sale for Erw Galvanised Steel Pipe - Hydraulic control check valve – Youfa Detail:
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 |
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)
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
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:
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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".
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.
By Karen from Suriname - 2016.04.28 15:45