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Pressure Reducing Valve

Parameters of Pressure Reducing Valve

While it is possible to maintain a constant pressure by using the combination of an actuated control valve, a pressure sensor, and a controller, a pressure reducing valve offers the advantage of being able to control pressure through fully-automatic self-contained operation, requiring no type of external power source. It can offer the further advantage of extremely rapid response action by immediately sensing and adjusting based on the downstream pressure.

Pressure Reducing Valve

Description

In a steam-using plant, steam is often generated at high pressures and reduced locally to provide heat for each steam user. This is usually done to minimize the diameter of steam distribution piping and enable more cost-efficient steam delivery.

A common way of lowering pressure is by throttling down the size of the steam passageway. For the most basic pressure reduction, it is possible to simply use a conventional globe valve in a fixed partly-open position, or by inserting an orifice plate into the flow of steam. However, any fluctuation in the flow rate would be accompanied by a corresponding fluctuation in pressure. To avoid such circumstances, pressure-reducing valves (PRVs) can be used to provide precise control of downstream pressure. They automatically adjust the amount of valve opening to allow the pressure to remain unchanged even when the flow rate fluctuates.

Additional information

Size

DN25 to DN 400

Working temperature

≦200 °C

Inlet Pressure (Mpa)

1.6 to 0.25
2.5 to 1.8
4 to 2.8
6.4-2.9

Outlet pressure (Mpa)

0.05 to 1
0.1 to 1 .6
0.1 to 2.5
0.1 to 3

Pressure Rating

1.6 to 6.4 Mpa

Body Material

Carbon Steel , Stainless Steel

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