Y645H/Y645Y pneumatic steam pressure reducing valve (also called pneumatic regulating valve) is mainly composed of valve body, valve seat, valve disc and other parts, and adopts the structure of double valve seat and double cone valve disc. Adopting pressure-balanced disc, the pressure can be adjusted by the lifting and lowering of the disc, which can be equipped with a multi-spring straight-stroke pneumatic actuator to realize remote control and automatic control. It is more appropriate to use 0.6 for the decompression ratio of this series of products. Mainly used in steam pipelines to adjust pressure. It is widely used in industries such as cogeneration, textile, printing and dyeing, petrochemical, and sugar making.

Main technical parameters and performance indicators:

Material of main parts:

Flow coefficient (Cv):

Dimensions (PN1.6-4.0):Unit: mm

Dimensions (PN6.4-16.0):Unit: mm

Product description:

Pneumatic pressure reducing valve is used to adjust the pressure before and after the valve, the adjustment sensitivity is accurate, and the pressure is stable. The pressure reducing valve uses compressed air as the power source, the cylinder as the actuator, and drives the valve with the help of electrical valve positioning switches, converter solenoid valves, position retaining valves and other accessories to achieve switch or proportional pressure reduction, and receive industry The control signal of the automatic control system completes the adjustment of the pressure value after the valve, and stabilizes various process parameters such as flow, pressure, and temperature. Pneumatic pressure reducing valve is characterized by simple control, fast response, and intrinsically reliable, without additional explosion-proof measures.

Product function of pneumatic pressure reducing valve:

The pneumatic pressure reducing valve adopts a double-number guide structure and is equipped with a multi-spring actuation mechanism. It has the advantages of compact structure, light weight, sensitive action, large valve capacity, accurate flow characteristics, and convenient disassembly and assembly. It is widely used to accurately control the process parameters of gas, liquid, steam and other media such as pressure, flow, temperature, and liquid level to maintain a given value. It is especially suitable for occasions with large pressure difference, large allowable leakage and not very clean media.

Pneumatic pressure reducing valve product application:

There are two valve seats in the valve body of the pneumatic pressure reducing valve. The fluid flows out through the upper and lower sealing surfaces of the valve core. The unbalanced force is small. It is a balanced structure. Large pressure difference is allowed. It is suitable for large pressure difference and large flow. Where leakage requirements are not strictly required, it is widely used in petroleum, chemical, pharmaceutical, metallurgical, power stations, and other industrial sectors to control gas, liquid, steam and other media.

Y645H pneumatic double-seat steam pressure reducing valveexecutive standard

Standard for temperature and pressure reduction device: JB/T6323-2002 "Temperature and pressure reduction device"

Standard for temperature and pressure reducing valve: GB/10868-2005 "Temperature and pressure reducing valve for power station"

Water supply control valve standard: GB/10869-2005 "Power Station Control Valve"

Y645H pneumatic double seat steam pressure reducing valveclassification method

A. Classified by structure

1), integrated temperature and pressure reducing device; (WY type)

2) Split type temperature and pressure reducing device; (YW type)

3) Temperature reduction device (W type);

4), pressure reducing device (Y type);

B. Classified by steam parameters:

1), medium temperature and medium pressure temperature and pressure reducing device; (P1≤3.82 MPa, temperature T1≤425℃);

2) Sub-high pressure temperature and pressure reducing device; (P1≤5.4 MPa, temperature T1≤485℃);

3), high temperature and high pressure temperature and pressure reducing device; (P1≤10 MPa, temperature T1≤540℃);