Pressure reducing valves

The task of pressure reducing valves is to reduce the system pressure to a predetermined level. For this, a desired pressure is set using the valve for the pipes downstream of this valve.

In the case of steam pressure reduction stations, the expansion steam after pressure reduction should be taken into account and the pipe size increased. We will gladly consult you about the dimensioning of the piping and the management of flow rates.

Pressure reducing valves are suitable for steam, liquids and gases.

Two operating principles

Two different techniques can be applied for self-operated pressure reduction.

In case of the first model, a membrane-operated disc is placed on the valve to which pressure is directed from the downstream side of the valve through an impulse pipe. In this case, the valve will operate as a function of the pressure from the impulse pipe and of the spring integrated in the valve. The spring force with a predetermined pressure setting attempts to open the valve, while the pressure coming from the membrane-operated device strives to close it. Such an operation is characteristic for the ARI and GESTRA pressure reducing valves.

In another, slightly simpler model, the valve opening is only based on the spring force integrated in the valve and on the internal structure, such as in the case of NIEZGODKA pressure reducing valves.