Australian fittings manufacturer Philmac have recently demonstrated the Friatec balloon technique for dealing with unwanted water flows in a PE pipeline.

Often upstream valves don’t stop the whole flow in a pressure pipeline or, in the case of a low head application, perhaps there are no valves at all, and this makes it difficult if welding is required downstream. Philmac’s technique allows the line to be blocked at any point upstream or either side of the weld using an inflatable balloon inserted through an EF saddle.

The following series of photos show how the balloon is a versatile option that can be deployed at any existing access point or via the EF saddle. For example, an upstream hydrant or large service connection could be used as the access point for the balloon.

The end result is a dry pipe ready to weld with complete confidence.

(1.) A test pipe is set up with mains water supplied via a house service tapping saddle. The pipe has an EF cap on one end and open at the other. (3.) Welding the EF saddle connection - complete with the Friatec mounting device that uses simple air pressure to clamp the saddle to the pipe and ensure even contact. (5.) Inserting the balloon. (7.) Finally a brass plug is inserted into the tapping saddle to complete the job.

(2.) Water flows through the test pipe. (4.) The balloon before insertion. (6.) The inflated balloon has stopped the flow.

Philmac are based in Adelaide but have offices around Australia. For further details please contact:

For Further information please contact :
Plastics Industry Pipe Association of Australia Ltd
Suite 246, 813 Pacific Hwy, Chatswood NSW 2067
or email plasticspipe@pipa.com.au

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