discount 70% in 2018-09-21 to 2018-09-23
price: USD$ 20545.00
freight :USD$7.00,(Postal parcel)
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Air, water, water, steam, gas, oil etc..
ZY47 type self operated pressure control valve (adjustable)Also called dynamic pressure control valve, dynamic pressure balance valve, the valve is a hydraulic balance automatic constant pressure differential, used in central heating, central air conditioning water system, is conducive to the controlled system and the user terminal device self-regulation, especially suitable for household metering heating system and variable the air conditioning system. Self operated pressure control valve for the double disc structure, rod balance force is small, compact structure, is often used for heating (air conditioning) water system.
ZY47 type self operated pressure control valve (adjustable)For the closed water circulation system (such as hot water heating system, air conditioning water system) a self regulating valve, it is charged with loop appears disturbance (pressure fluctuation network) and disturbance (internal resistance change), maintain a constant pressure charged loop.
ZY47 type self operated pressure control valve (adjustable)The structure and working principle:
ZY47 type self operated pressure control valve (adjustable)According to the installation in the water supply pipe and return pipe. Divided into the water supply structure and return type structure, the two are not interchangeable. P1 is the network of water supply pressure, P2 return pressure controlled loop, P3 return pressure network.
When the network of supply and return water pressure P1-P3 increases, while being laminated to drive the valve down, the valve resistance increases, the increase of P2-P3, P1-P2 (which is imposed on the pressure charged loop) remain unchanged. Whereas P1-P2 decreases, while being laminated to drive the valve moves up the valve's resistance decreases, P2-P3 decreases, so that the P1-P2 remains the same.
When charged with the resistance to change within the loop, such as a branch off, the total resistance loop increases. At the moment of P2 decreased, P1-P2 increased. Force balance but the resulting sense of squeeze film is broken down, the valve, the valve increases the resistance. The increase of P2-P3, P2 back to the original size, P1-P2 constant. Whether it is visible network pressure fluctuations, or charged with resistance to change within the loop ZY47 type self operated pressure control valve can be applied to maintain the constant pressure charged loop.
ZY47 type self operated pressure control valve (adjustable)Performance characteristics:
1, water supply type (G) and return type (H) differential pressure control valve must be installed in the water supply pipe and a return pipe;
2, pressure difference control accuracy + 7.5%;
3, nominal pressure: 1.6MPa, 2.5MPa;
4, medium temperature 0-150;
5, pipe connection pipe thread, 1/2 tube length 1.5m;
6, support the controlled system internal self regulating;
7, to eliminate the influence of external pressure fluctuation on the system;
8, divided into constant pressure type and adjustable pressure type two;
9 body material: ductile cast iron;
10, in the premise of control accuracy loss, adjustable differential pressure type pressure regulating ratio up to 16:1.
Warranty: one year
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