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PP-R Systems
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Technical articles and updates
PPR Pipe UV Resistance: What the Standards Cover
PPR pipe UV resistance is a maker's claim, not a standard requirement: ISO 15874 scopes PP-R to installations within buildings. The clauses…
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Can You Bend PPR Pipe? Heat, Sweep Bends and Alternatives
Can you bend PPR pipe? Only as a long deflection: 100 x OD per Aquatherm, no published heat-bending method, and ISO 15874-2…
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Does PPR Pipe Need Insulation? Four Cases, Four Answers
Does PPR pipe need insulation? Yes on hot and chilled runs, and on German cold lines since 1 Jan 2024. Thicknesses from…
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How to Connect PVC Pipe to PPR Pipe Without a Weak Joint
If you are asking how to connect PVC pipe to PPR pipe, you have almost certainly already tried the obvious thing and…
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Fiber Reinforced PPR Pipe vs Standard vs PPR-AL-PPR: What to Specify
Fiber reinforced PPR pipe falls under ISO 21003, not ISO 15874 — and 0.035 mm/m·K is a published minimum, not a property.…
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PP-R Joint Failure: Proving Whether It Was the Pipe or the Weld
ISO 15874 separates a PP-R material defect from a bad weld. A step-by-step evidence procedure for importers and distributors facing a joint…
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Antibacterial PPR Pipe: What to Demand Before You Specify It
What ISO 22196 and JIS Z 2801 really measure, why lab coupon results do not predict a circulating riser, and the 8…
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PPR Pipe Support Spacing & Thermal Expansion for Hot Runs
PPR pipe support spacing by pipe size and wall temperature, the vertical 1.2 correction, and expansion-loop sizing worked from real manufacturer tables.
Read guide →PPR Pipe Pressure Test: Correct Pressure, Duration, Record
Test PP-R at 1.1x design pressure, not 1.5x its PN class. EN 806-4 procedures, why the gauge falls without a leak, and…
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PPR Pipe Flow Rate Chart: Size a Line Without Losing Pressure
PP-R flow rate chart from ISO 15874-2 Table 5 bores: pressure drop per metre and EN 806-3 velocity limits, for specifiers sizing…
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