Hitze Insights
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Use these permanent system guides first; the latest articles below answer narrower project questions.
PEX-a vs PEX-b vs PEX-c by manufacturing method: crosslinking %, flexibility, kink repair and the one fitting rule that actually matters for your install.
PEX vs PEX-AL-PEX multilayer pipe, decided by the run: oxygen barrier, thermal expansion, jointing and best-for/not-for from a German-brand pipe maker.
Size an underfloor heating manifold by loop count and flow rate: ports, flow meters, brass vs stainless, and the interfaces that actually fit.
Latest in this category
Not all multilayer is equal: how a butt-welded aluminium core in PEX AL PEX pipe beats overlap welds on concentricity, oxygen barrier…
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What PEX chlorine resistance really means: ASTM F876 CL1/CL3/CL5 classes, F2023 testing, PPI TR-4 and NSF-pw explained for spec engineers.
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Grounded coefficients for pipe thermal expansion: PEX ~0.15-0.20, multilayer ~0.025, PP-R ~0.15 mm/(m·K). Worked 30 m riser at ΔT 40 K, loops…
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PPR pipe size chart 20–110mm: SDR 11/7.4/6 walls per DIN 8077, PN ratings at 20°C vs hot derating, and how to match…
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PEX vs copper for potable water: installed cost, chlorine and freeze behavior, theft risk, code acceptance, recirc limits — a trade buyer's…
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Size PEX & multilayer pipe by flow, not diameter: 16/20/25/32mm for loops, branches, trunks & mains, with code velocity limits and a…
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PE-RT vs PEX for underfloor heating: a radiant installer guide to flexibility, fittings, temperature ratings and the DIN 4726 oxygen barrier.
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PP-R vs PPR-CU antibacterial vs multilayer for hot & cold water: a wholesaler's guide to standards, joints, expansion and which pipe to…
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A trade buyer's guide to comparable PEX-a systems: which standard makes an alternative drop-in, where the 20-40% margin lives, and who should…
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