The 30D02Y 30D02R self-operated (before-valve) pressure controlvalve is composed of the control valve, actuator and a spring used for pressuresetting. It is suitable for controlling before- valve pressure in the pipes ofnon- corrosive liquids, gases and steams. When the before-valve pressure rises,the control valve is opened.                                                                                                                                                                                                                                                                                                                           

The main features are as follows:

1.It has the pressure balancing function with high sensitiity.

2.Low noise ,reliable performance, free

of maintenance

3.The standard modular design is adopted.

4.Various combined controls can be carried out through theassemblies.