Needle valves at 12:18 on January 3, 2014 update

Haichuan Shanghai Valve Co., Ltd. of J49H needle valve seal is good, generally used to seal small flow, high pressure gas or liquid (such as steam, oil) media. The species is generally divided into ordinary valve shut-off valves, needle valves, angle type needle valves, instrumentation needle valve, bellows needle valve, valve and the like. Needle valve sealing off a good, long life, even if the sealing surface is damaged, only need to replace wearing parts, you can continue to use. Card sets of instrumentation valves have easy installation and removal, connections are tight, there is conducive to fire, explosion and high voltage capability, good sealing performance, etc., are power plants, oil refineries, chemical plants and the instrument measuring the line of an advanced connection valve. Manual shut-off valve, ball valve can be installed in any position on the pipeline. http://www.zgchuanhu.com/shoudongzhenxingfa/zhenxingfa-j49h.html