Description

Work?Principle:
Check?valve?is?a?type?of?valve?which?open?or?close?the?valve?disc?rely?on?the?medium?flow?itself.The?check?valve?disc?will?open?when?the?pressure?of?stem?bottom?exceed?the?stem?above?and?the?spring.The?check?valve?disc?will?close?when?the?two?pressure?are?equalled.So?that?the?flow?goes?one?way?in?the?pipeline,and?prevent?the?fluid?flowingback,avoid?the?accidents.
Various?standards?of?valves?can?be?provided?to?clients:DIN,3A,SMS,ISO/IDF,BS/RJT,ASME/BPE?etc.
Technical?Data
Materal:1.Contact?with?the?product?components***4/**4L/**6L,Forging
??????????????2.Materal?No?contact?with?the?product?components***4
Sealing?material:1.Standard-EPDM(Working?Temperature:**0~***5?C)
?????????????????????????????2.Option-?SILICONE?(?Working?Temperature:**0***0?C)
???????????????????????????????????????????????VITON?(?Working?Temperature:**0***0?C)
Surface?treatment:1.Inside?surface?treatment?(Ra?0.4~0.8um)
?????????????????????????????????2.Surface?treatment?(Ra?0.8~1.6um)