Zipple :Dual Lock Zipper design Zipper having two profiles
Materical:PE，PTFE(not zipper type),stainless steel
1.useed hand press zipper profiles let seal,
2.uesed sealing,tape and clamp let colsed.
3.used aspiration column let film cover to be vaccume
4.colse flexible tube valve ,let all leakage film be vaccume
if gas leakage,In flexible tube Leak Detection will test gas pressure not vaccume,then will shut down gas control vavle.stop,so gas will be not continue leakage,then let wokers repair pipeline.