Vacuum ball in the 1990 s to the vacuum valve. Swing check valve can also be used to give the pressure could rise to more than the system pressure of the secondary system supply piping. Carbon steel check valve is the valve is used as boiler feed water and steam to cut off the valve, it can lift check valve and globe or Angle valves of the comprehensive function. Forged steel check valve used for industrial piping block medium counter-current device. It is like a vacuum valve. Began 90 by solid rotary valve plate in the valve ball rotation and to close. Than vacuum vacuum regulating ball Industrial Valves signal butterfly Industrial Valves to open and close control speed, the size and the leakage rate is relatively large vacuum butterfly valve. Due to its structure in the valve body, Industrial Valves stem is stainless steel, ball seal, shaft seal, materials research are by ptfe sealing technology. Thus. Suitable for different medium for air, water, steam, acid, alkali, etc. Medium environment temperature change range: - 25 ~ 120, sichuan to the work stress of 1. ~ 110-6106 3 pa vacuum management system and system of the pressure and get through or cut off with a acid, alkaline medium of gas and liquid flow. Form, performance parameters of the vacuum ball valve has a manual, pneumatic and three. 。 ( 1) Vacuum manual ball valve series (made in China GU) , pneumatic ( GUQ type) And pneumatic ( GUD type) Three. ( 2) Our country enterprise production of vacuum pressure regulating ball valve with pneumatic ( GQQ type) And pneumatic ( GQD) Two kinds. The two management vacuum technology to design the performance parameters of system pressure ball valve is: the cause of leak rate of 1. 310 - 4朋友- 1; Using pressure reach 10 - learning 4 to 1. 6MPa; Temperature is - in the course of work 30 ~ 150 body and valve core material is 316 l; Packing materials to enhance through ptfe, fluorine rubber; Using a pneumatic 1/4 rotation ( Or pneumatic) Actuators. Work smooth development. is opened and closed with electric signal output data. Pneumatic control vacuum pressure ball valve block, electric dual processing.
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