For this procedure the quick connecting couplers of Nitto Kohki are worldwide well approved. Models PCV and SP-V can be found in many production lines. The connection to the tube is executed by a simple, but very effective lever system (just pressing the lever down), the connection to the filling system is managed by high vacuum resistant couplers. Different packings materials are available to meet nearly every usage condition.
The couplers are made by brass or by stainless steel.