Hitze Insights
Piping & Heating Technical Guides
Specification, certification and sourcing guides for wholesalers, contractors and private-label brands — written from the Hitze engineering desk.
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PPR Hot-Water Temperature Rating: What the Numbers Really Mean
PPR has no single hot-water limit. Learn how 60°C, 70°C, 80°C and 95°C relate to application class, pressure derating, SDR and service…
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PPR vs PVC and CPVC: Which Pipe Fits?
PPR vs PVC and CPVC compared by service scope, joining method, approvals and site risk, with a standards-grounded checklist for system selection.
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Is PPR Pipe Safe for Drinking Water? A Certification-First Guide
PPR can be suitable for drinking water, but the name alone proves nothing. Check NSF 61, NSF 14, WRAS/DVGW scope, temperature and…
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PEX & Multilayer Pipe Sizing: 16/20/25/32mm, Flow & Pressure
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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Push-Fit Fittings for Retrofit: Where They Save Time & Where They Don’t
Where push-fit fittings save time on retrofit and where they cost a callback: ASSE 1061 ratings, concealed-wall rules and install discipline, from…
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FOB vs CIF vs DDP for Pipe Imports: Who Carries the Risk
FOB, CIF or DDP for importing pipe? Who carries the risk, what CIF insurance really covers, and the HS duty rates that…
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Exclusive Territory & Distribution Agreements With a Pipe Factory
Exclusive vs sole vs non-exclusive pipe distribution agreements: territory clauses, minimum-purchase terms, EU/US law and cert portability for buyers.
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Lead-Free Brass Grades (CW617N / DZR / CW724R): What They Mean for Potable Water
CW617N vs DZR (CW602N/CW511L) vs CW724R: which brass is lead-free, which resists dezincification, and which certificate unlocks each market for resale.
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How to Vet a PEX Pipe Manufacturer Before You Import
Sourcing PEX pipe from overseas is not hard to start — it’s hard to get right. Anyone can send you a glossy…
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NSF/ANSI 61 & Lead-Free Brass: What Potable-Water Compliance Requires
NSF/ANSI 61 vs 372, the 0.25% lead-free rule, and DZR brass grades (CW724R, CW511L, CW617N) — what potable-water compliance actually requires, from…
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