using the equilibrium valve to m
a. In the use of pilot-operated type steam reducing and filtering system make steam pressure more stable;
b. Analog sampling，controlling central energy distribution system is according to proportional share;
c. Steam pressure，de-molding compressed air pressure and cooling vacuum pressure，flow rate can be adjusted independently;
d. Simple layout of pipes, efficient pressure management. make sure that the steam pressure and temperature inside of mould is uniform.