The30D12Y/30D12R pilot-operated (after valve) pressure controlvalve is composed of the control valve ，pilot and actuator .It is suitable for controlingdifferential pressure in the pipes of non-crrosive liquids, gases and steams.when the diferential pressure rises, the control valve is closed .

The main features are as follows:

1.      It has the pressure balancing function                                                                                                            

2.      Low noise, reliable performance, free of maintenance

3.      The standard modular design is adopted.

4.      High control precision