Is Hitze PEX pipe safe for potable water?

Yes. Hitze pipe is SKZ-tested (a German plastics institute) and built to DIN 8077/8078 and EN ISO 15874. Our potable lines are made for drinking-water use and supported to NSF-14 and NSF/ANSI 61 for North America, with lead-free brass fittings, plus WRAS and DVGW support for the UK and EU. Certificate and listing numbers are provided in the Hitze Cert Pack and are verifiable at source.

Do you offer an oxygen-barrier PEX for hydronic heating?

Yes. Our PE-RT and PEX heating pipe is an EVOH oxygen-barrier multilayer construction that blocks oxygen diffusion per DIN 4726, protecting boilers, pumps and manifolds from corrosion in closed hydronic loops, with a 50-year service life. Non-barrier PEX is used for potable water. Heating pipe runs 16 to 32 mm in red, orange, black and pink.

What PEX sizes and coil lengths do you supply?

Our PE-RT and PEX heating pipe runs 16 x 2.0 mm through 32 x 4.4 mm (OD 16 / 20 / 25 / 32 mm), an EVOH oxygen-barrier multilayer supplied in 100–300 m coils with a 50-year service life. Full dimensional and pressure/temperature data, including exact per-size ratings, is detailed in the technical data sheet, available on request.

Product · Pipe

PEX Pipe Supplier — PEX-a, PEX-b & PEX-c, Certified for Potable & Heating

Q: Should I stock PEX-a or PEX-b?

Both meet ASTM F876/F877. PEX-a (Engel) is the most flexible with the best kink-repair (expansion) behavior; PEX-b (silane) is stiffer, lower cost, and popular with crimp/clamp installers. Hitze supplies PEX-a, PEX-b and PEX-c so you can match each market's install method.

Hitze is a German brand of premium PEX and PE-RT pipe, contract-manufactured to German standards — SKZ-tested and built to DIN 8077/8078 and EN ISO 15874.

One source for potable PEX (NSF & cUPC support) and EVOH oxygen-barrier heating pipe — 16–32 mm, 100–300 m coils, 50-year service life — for hydronic and radiant-floor systems.

Request PEX Samples → Get Wholesale Pricing →

Trade / bulk supply only — Hitze does not sell single lengths at retail.

Warehouse stock of PEX and PE-RT pipe coils in red, blue, white and grey on pallets

SKZ · DIN 8077/78 · EN ISO 15874

The Range

See the Full PEX & PE-RT Line

Potable and heating grades, every crosslink method, real floor-heating sizes — one German-engineered source. Studio shots of the full range below show exactly what ships.

PEX pipe coils being wound on production spools, stocked and container-ready — PEX & PE-RT coils — stocked & container-ready

Red PEX-a pipe coils stacked on a pallet — PEX-a coil (red) — stacked & palletised

Blue potable PEX-b pipe coils stacked on a pallet — PEX-b coil (blue) — potable

Cut end of PEX pipe showing the wall cross-section and smooth bore — Cross-section — pipe wall & smooth bore

Black oxygen-barrier heating pipe — single straight length — Oxygen-barrier heating pipe — red / orange / black / pink

White PEX pipe length with a manual pressure-test T-handle tool — PEX pipe length — pressure-test ready

PEX pipe extrusion line with pipe emerging from the die head on the plant floor — Extrusion line — where the pipe is made

Freshly extruded pipe strands running through the cooling and haul-off line — In production — extrusion & cooling line

Red Orange Black Pink

Type & Process

PEX-a, PEX-b or PEX-c? Match the Crosslink to the Market

All three meet the same ASTM F876/F877 performance grade. The difference is the crosslinking process — and which install method and price point your buyers expect.

PEX pipe straight length, cream-coloured — smooth wall and bore — PEX-a · Engel — pipe sample

PEX pipe straight length, white — smooth wall and bore — PEX-c · E-beam — pipe sample

Spec	PEX-a (Engel)	PEX-b (silane)	PEX-c (electron-beam)
Crosslink method	Peroxide, high-heat / high-pressure during extrusion	Silane / moisture cure after extrusion	Electron-beam irradiation after extrusion
Crosslink degree	Highest & most uniform	Good	Good
Flexibility	Highest — tightest bend radius	Stiffer	Medium
Kink repair	Repairable with heat (expansion-fit friendly)	Not heat-repairable	Not heat-repairable
Typical install	Expansion + crimp / clamp	Crimp / clamp / push-fit	Crimp / clamp / push-fit
Relative cost	Highest	Lowest	Medium
Standard	ASTM F876/F877	ASTM F876/F877	ASTM F876/F877

For expansion-fit systems and the most demanding cold-weather flexibility, buyers reach for PEX-a. For crimp/clamp installs at a sharper price, PEX-b is the volume workhorse. PEX-c sits in between. Hitze extrudes all three so you don’t have to split your order across suppliers — one PO, one set of paperwork. Switching brands? See how our 5-layer PEX-AL-PEX compares as a Rehau alternative.

Request PEX Samples of A, B and C →

Potable Safety

Potable-Water Safe PEX — NSF/ANSI 61, Lead-Free, Every Market

Drinking-water listings are the difference between a product you can shelve and a returned container. Hitze potable PEX is built and supported for exactly that.

Hitze pipe is tested and certified by SKZ (Süddeutsches Kunststoff-Zentrum, a German plastics testing institute) and built to DIN 8077/8078 and EN ISO 15874. On top of that base, our potable lines are made for drinking-water contact and supported to NSF-14 and NSF/ANSI 61 for North America, listed via cUPC (IAPMO), and paired with lead-free brass (DZR / CW724R) fittings. For the UK and EU we support WRAS and DVGW, plus CE + DoP.

German base (evidenced): SKZ · DIN 8077/8078 · EN ISO 15874
North America: cUPC / UPC (IAPMO) · NSF-14 · NSF/ANSI 61 · ASTM F876/F877 — numbers on request
UK / EU: CE + DoP · WRAS · DVGW — numbers on request
Lead-free fittings: DZR / CW724R low-lead brass

Lead-free brass compression fitting on white potable PEX pipe, ferrule and O-ring exploded — Lead-free brass fitting on potable PEX — joint detail

SKZ Tested DIN 8077/78 EN ISO 15874 cUPC / UPC NSF-14 / 61 DVGW WRAS CE + DoP

Download the PEX Cert Pack

Every potable and heating listing in one PDF, ready for your compliance and customs files. Email required · certificate and listing numbers are provided in the Hitze Cert Pack and are verifiable at source.

Request the Cert Pack →

Sizes & Coils

PEX & PE-RT Sizes — 16 to 32 mm, EVOH Oxygen-Barrier Multilayer

Real floor-heating and plumbing sizes from an EVOH oxygen-barrier multilayer construction, so you can consolidate SKUs under one brand and one certification set — with a 50-year service life.

Size (OD × wall)	OD	Wall	Coil length
16 × 2.0	16	2.0	100–300 m
16 × 2.2	16	2.2	100–300 m
20 × 2.0	20	2.0	100–300 m
20 × 2.3	20	2.3	100–300 m
20 × 2.8	20	2.8	100–300 m
25 × 2.3	25	2.3	100–300 m
25 × 3.5	25	3.5	100–300 m
32 × 3.0	32	3.0	100–300 m
32 × 4.4	32	4.4	100–300 m

Four PEX pipe cut lengths lined up small to large showing outside diameters and bores — Size lineup 16 → 32 mm — cut lengths

All PE-RT & PEX heating pipe is EVOH oxygen-barrier multilayer with a 50-year service life, supplied in coils of 100–300 m in red, orange, black and pink. Per-size pressure/temperature ratings (bar / ℃) are detailed in the technical data sheet, available on request.

Get Wholesale Pricing by Size →

EVOH · DIN 4726

Oxygen-Barrier PEX (EVOH) for Hydronic Heating

In a closed heating loop, oxygen diffusion through ordinary pipe corrodes boilers, pumps and manifolds. The barrier layer is not optional — it’s the spec.

Hitze PE-RT & PEX heating pipe is built as an EVOH oxygen-barrier multilayer construction — the EVOH layer blocks oxygen diffusion per DIN 4726, protecting steel and cast-iron boilers, pumps and manifolds across the hydronic system, over a 50-year service life. It runs 16 × 2.0 through 32 × 4.4 mm in coils of 100–300 m. Use barrier PE-RT/PEX for closed heating loops; use non-barrier potable PEX for domestic water — one certified source for both. See the full oxygen-barrier PEX (EVOH / DIN 4726) spec.

PEX heating pipe end-on showing the pipe wall cross-section and smooth bore — Oxygen-barrier heating pipe — wall cross-section

Building a full radiant-floor loop? Pair barrier PE-RT/PEX for radiant floor heating with our compression fittings and manifolds for a single-supplier hydronic package.

Oxygen-Barrier PEX Full Spec → Underfloor Heating Manifolds → Multilayer PEX-AL-PEX →

Tool Compatibility

Works With Your Tools — Press, Crimp, Clamp & Expansion

A PEX order is only useful if it fits the fittings and jaws your installers already own.

Crimp tool closing a copper ring onto white PEX pipe at a fitting — Crimp / clamp copper ring

Cold-expansion brass fitting being assembled onto white PEX pipe — Cold-expansion fitting

Lead-free brass compression fitting on white PEX pipe with ferrule and O-ring — Compression joint — brass body & ferrule

Hitze PEX is dimensioned to ASTM F876/F877 so it works with standard crimp (copper ring), clamp (cinch), push-fit and expansion methods, and with press fittings across common 16 / 20 / 25 / 32 mm sizes. Our press fittings use a brass body + stainless sleeve + plastic ring and are matched to standard TH / U / F / M jaw profiles. Tell us your tooling and we confirm compatibility before you order — no surprises on-site.

Press Fittings Compression & Push-Fit Fittings

Request a Sample + Fitting Kit →

FAQ

PEX Pipe FAQ — Wholesalers, Contractors & Importers

Should I stock PEX-a or PEX-b?

For the WholesalerStock to your market’s install method. PEX-b (silane) is the lower-cost crimp/clamp volume seller; PEX-a (Engel) is the premium, most-flexible, expansion-fit line. Hitze supplies PEX-a, PEX-b and PEX-c under one PO, all to ASTM F876/F877 and SKZ-tested — so you cover every buyer from one source.

Is this PEX safe for potable water?

For the ContractorYes. Hitze pipe is SKZ-tested and built to DIN 8077/8078 and EN ISO 15874. Our potable PEX is made for drinking-water use and supported to NSF-14 and NSF/ANSI 61, listed via cUPC, and paired with lead-free (DZR / CW724R) brass fittings. For the UK/EU we support WRAS and DVGW. Certificate and listing numbers are provided in the Hitze Cert Pack and are verifiable at source.

Will it work with my crimp or press tool?

For the ContractorYes. Hitze PEX is dimensioned to ASTM F876/F877, so it fits standard crimp, clamp, push-fit and expansion methods, plus press fittings in 16/20/25/32 mm across TH/U/F/M jaw profiles. Send us your tooling and we confirm compatibility, then ship a sample to test one joint first.

Do you offer an oxygen-barrier version, and can you private-label it?

For the Importer / Private-Label BrandYes. Our PE-RT/PEX heating pipe is an EVOH oxygen-barrier multilayer blocking oxygen diffusion per DIN 4726, with a 50-year service life; non-barrier PEX serves potable water. Both are OEM/ODM ready with your logo and packaging, and we align certification to your market (SKZ/DIN, cUPC/NSF, DVGW, WRAS). There is no MOQ — start with samples or a small trial order and scale into private-label production from there.

What sizes and coil lengths can you supply?

For the Importer / DistributorOur PE-RT/PEX heating pipe runs 16 × 2.0 mm through 32 × 4.4 mm (OD 16 / 20 / 25 / 32 mm), an EVOH oxygen-barrier multilayer in 100–300 m coils, red/orange/black/pink, with a 50-year service life. Full dimensional and pressure/temperature data, including exact per-size ratings, is detailed in the technical data sheet, available on request.

Get Started

Request PEX Samples & a Wholesale Quote

Tell us your sizes, grade (PEX-a/b/c), target market and volumes — we reply with pricing, MOQ and the certification documents for your region.

Request a Quote → Download Cert Pack →