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标题:Metal to metal sealed ball valve
正文:
Metal to metal sealed ball valves Metal to metal sealed ball valve 's PDF file 1. Metal to metal sealed ball valves Piston action seat design. According to customers' requirements, ball valve can be disigned to single piston action,self-release pressure seat and double piston action,dual sealing structure. The pressure auto release device should be installed in the body if the seat is designed to double pistion action. When the pressure exceed allowed pressure 1.33 times, the pressure can be released automaticly. Thus ensure running safty.2 The Metal to metal sealed ball valve's ball and the seat are coated by Ni base or WC, the hardness can be higher than HRC65, Metal to metal sealed ball valve has advantages such as unti-friction and corrossion resistance.3 The design for the seat is fully sealed type, thus the impurity cann't enter the seat, avoid the seat being stucked, ensure the
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