standard design:
varrious standards of valves can be provided to clients:din,3a,sms,iso/idf,bs/rjt,asme/bpe etc
the series of valve have two types valve,that is the cut-off type and reversing type,the cut-off type can made of two or three pipeline connector,the reversing valve can made of three to five pipeline connector,their variety fully satisfied the needed of market.
