1. Simple structure, manufacturing and maintenance easier.
2.Working travel and open time is short.
3.Good sealing, good anti-scuffing properties and long life.
4.The part material, flange and butt weld and dimension may be selected according to current operating condition and users' requirement, so that meetina the reauirements of various enaineerina.
Flange ends: DN EN 588-1-1995
Test&Inspection: DIN EN12266-2003
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