Socket fusion temperatures and dwell times, thermal expansion and clip spacing, in-wall chasing, pressure test procedures to EN 806-4, and the joints that fail on site.
An HDPE pipe welding machine of the butt fusion type is sold by one number: the outside-diameter band its clamps cover. Three published examples show the…
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HDPE pipe jointing looks like an installation decision. The welder in the trench treats it as one. In practice the choice is made much earlier. It…
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The moment before the plasterer arrives is the last time anyone will see these joints. BS EN 806-4 clause 3.2.5 says what has to happen first.…
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Search for a pipe repair coupling and almost everything you find was written for PVC or copper: a slip coupling that telescopes over the break, a…
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A PN20 pipe is not tested at 30 bar. That single sentence contradicts most of what the first page of Google says about pressure testing PPR,…
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Ask five installers what happens to PP-R socket fusion below 5 °C and you will get two wrong answers: stop work, or turn the iron up. One…
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Under the US model plumbing code, a horizontal PVC pipe clamp goes every 4 ft (1.22 m), and a vertical one every 10 ft. That is…
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Every clip in this picture is a decision. Which ones hold the pipe still and which ones let it slide is what determines whether the run…
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A socket pipe joint takes about eight seconds to make and lasts as long as the building does. The uncomfortable part, backed by peer-reviewed work on…
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