The U-PVC connectors of the passage series have a smooth mouth (for gluing) and a threaded mouth belonging to the GAS – BSP family (Withworth non metric threading, cylindirical with fine pitch).
The smooth mouth must be glued with U-PVC connectors and pipes with compatible sizes and tolerance values. The threaded mouth offers a perfect seal using the PTFE tape to eliminate any play without using clampings which are too strong.
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