How reduced pressure pneumatic valve in steam heating system

the reduced pressure pneumatic valve is mainly in order to satisfy the users ( Including life and production process with steam heating, etc. ) The medium pressure requirements.
the reduced pressure pneumatic valve is to make the medium ( Water or steam) Through the opening and closing of pneumatic valve hole ( Or pneumatic disc) Size of throttling, in order to increase the resistance loss of the steam and have the purpose of the relief.
the relief of the specifications of the pneumatic valve is according to the medium flow, throttling pressure before and after decompression for pressure to select certain, must not be any change in the construction of models and specifications.
the commonly used vacuum pneumatic valve piston, diaphragm and bellows type.
piston vacuum pneumatic valve has the advantages of large adjustment range, work stable and reliable, and more widely used in steam heating, but should pay attention to the pressure difference before and after pneumatic valve should not be less than. MPa。