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Dielectric Unions: Which Code Clause Requires One, Why They Fail, and What Plastic Pipe Changes
IPC 2024, UPC 2021 and IRC 2024 clauses by metal pair, ASSE 1079 ratings (125 psi at 180 °F minimum), field failure…
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PPR Fittings List to BOQ: Counting Pipe, Fittings and Waste
PPR fittings list to BOQ: the NRM2 rule on whether fittings are priced at all, the four count triggers, fusion-depth pipe loss,…
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PEX Pipe-in-Pipe Relining: Sizing, Clearance and When It Beats Repiping
Pex pipe in pipe relining pulls a smaller PEX tube through an existing host pipe and terminates it at both ends. The…
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Pipe for Underfloor Heating: Standards & Sourcing Guide
Pipe for underfloor heating is not one product. It is a loop pipe inside the floor, a distribution pipe between the plant…
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PPR Pipe Cutter Sizes: Match the Tool to the Pipe | Hitze
PPR pipe cutter sizes are sold by one number: the maximum outside diameter the tool can shear. Walk a tool counter and…
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PPR Fittings Names: Read a Catalogue Without Ordering Wrong
A PP-R range is eight fitting families — socket, elbow, tee, reducer, end cap, union, brass-insert fitting and saddle — and every…
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Underfloor Heating Manifold Installation: Position, Test, Screed and Commission
Install a UFH manifold to EN 1264-4: port count, Eurocone connections, the 4-6 bar DIN 18380 test, screed cover depths and the…
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Balancing an Underfloor Heating Manifold: Flow-Meter Settings
Cold rooms with the pump running? The full manifold balancing procedure: calculate per-loop flow, purge, set the 0-2.5 L/min meters, avoid actuator…
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Fitting Pressure Ratings (PN16/PN25): Why the Joint Sets the Limit
PN16 vs PN25 fitting pressure ratings: temperature derating, EPDM seal limits, EN 1254, and why the system rating is the weakest joint.…
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Galvanic Corrosion in Plumbing: Mixed-Metal Connections Explained
Galvanic corrosion in plumbing explained for contractors: the galvanic series, copper-to-galvanized failure, dielectric unions vs brass transitions, and DZR grades.
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