Product · Manifold
Underfloor Heating Manifolds — Brass & Stainless Steel, 2 to 12 Port
German-engineered hydronic UFH manifolds, built and balanced for the trade. Full port matrix, per-loop flow meters, actuator-ready.
Wholesale, private-label and bulk supply for North America, the UK and Europe — one supplier, both materials, 2–12 loops, ready to label as your own.
Trade / bulk supply only — Hitze does not sell single manifolds at retail.
Brass & Stainless · 2–12 PortThe Range
See the Manifold Line — Brass, Stainless, 2 to 12 Port
Loaded assemblies with per-loop flow meters, isolation valves and M30×1.5 actuator ports — one German-engineered source for both materials and the whole port matrix.
How It Works
What Does an Underfloor Heating Manifold Do?
A manifold is the distribution hub of a hydronic underfloor heating system — it splits one hot-water supply into balanced streams, one per heating loop, so every zone warms evenly.
Hot water arrives from the boiler or heat pump and enters the flow bar; the manifold splits it into equal, balanced streams — one per heating loop — so every zone reaches temperature at the same rate. Cooled water returns through the return bar back to the heat source.
Each loop is a flow/return pair: one outlet on the flow bar, one on the return bar. Balancing those loops is what makes a floor warm evenly instead of hot near the manifold and cold at the far wall — which is why per-loop flow meters matter. Without accurate metering, an installer is guessing.
- Flow bar (top): feed, with a flow meter on each loop for hydraulic balancing.
- Return bar (bottom): return, with actuator-ready ports (M30×1.5) for thermostatic zone control.
- 1 port = 1 loop — count loops to count ports.
Download the Manifold Sizing Guide
Loop-count rules, port-selection table and material decision tree — everything you need to spec the right manifold. Email required.
Port Range
Full Port Range: 2, 3, 4… Up to 12 Loops
One brand for the whole matrix. Stock every port count without juggling suppliers.
Pick the port count by loops, not by room count — large rooms often need two or more loops so no single run exceeds a practical length. As a rule of thumb, keep each loop to about ~100 m of pipe max, which at typical 150 mm spacing covers roughly ~15–20 m² of floor (varies with pipe pitch of 100–200 mm and diameter of 16/20 mm). Use the guide below as a starting point and confirm against a heat-loss calc.
| Ports (loops) | Typical use | Available in |
|---|---|---|
| 2–3 port | Small flat, bathroom + kitchen, extension | Brass · Stainless |
| 4–6 port | Standard 2–3 bed home, single floor | Brass · Stainless |
| 7–9 port | Larger home / whole floor | Brass · Stainless |
| 10–12 port | Large residence, light commercial | Brass · Stainless |
Port centers, bar diameter (typ. 1″ / 1¼”), outlet spec (¾” EK Euro-cone) and flow-meter range are detailed in the spec sheet — exact figures available on request.
Material Choice
Brass vs Stainless Steel Manifolds — Which to Spec?
Both do the same job; the choice is water chemistry, budget and positioning. Here’s the trade-level comparison.
| Spec | Brass Manifold | Stainless Steel Manifold |
|---|---|---|
| Material | Lead-free / DZR brass (CW724R / CW511L) | Stainless steel (304 / 316 grade options) |
| Corrosion resistance | High; DZR resists dezincification | Very high; best for aggressive/hard water |
| Cost | Lower — the volume default | Higher — premium tier |
| Machinability / options | Easy to add flow meters, ports, adaptors | Robust, clean look, spec-in favourite |
| Best for | Mainstream residential UFH, wholesale volume | Premium residential, commercial, harsh water |
| Weight | Heavier | Lighter for the same size |
Bottom line: stock brass as your volume line and stainless for premium and problem-water jobs. Hitze supplies both, 2–12 port, on the same order — and both carry the same flow-meter and actuator specification, so installers get one workflow regardless of material.
See the 304 Stainless Manifold Range →
Get the Brass-vs-Stainless Cheat-Sheet
Material decision tree, loop-count rules, port-selection table and full spec fields in one PDF. Email required.
What’s Inside
Manifold Components — Balanced, Controllable, Serviceable
A Hitze manifold assembly ships loaded so installers commission faster.
- Per-loop flow meters — on the flow bar for visual hydraulic balancing. Flow range and accuracy available on request.
- Actuator-ready return ports — M30×1.5 thread for thermostatic actuators, enabling per-room zone control.
- Isolation ball valves — flow and return shut-off for servicing without draining the system.
- Automatic air vents + fill/drain — purge air (an oxygen-in-water problem for boilers and manifolds) and charge/empty loops.
- End caps & mounting brackets — wall-mounted, ready to plumb.
Because trapped oxygen corrodes steel components, our UFH pipe uses an EVOH oxygen-barrier layer per DIN 4726 — pairing an oxygen-tight pipe with the manifold protects the whole hydronic loop.
One Compatible Kit
Manifold + Matched PE-RT Pipe, One Compatible Kit
Sourcing the manifold and the pipe from two vendors is where compatibility problems start.
Hitze also manufactures PE-RT underfloor heating pipe with an EVOH oxygen barrier (DIN 4726), sized 16 and 20 mm to match our manifold outlets (¾” EK Euro-cone / compression adaptors). Order pipe and manifold together and get a single, tested, warranty-aligned kit — plus one PO, one lead time, one label.
Fits PEX and multilayer too: outlets adapt to 16/20/25 mm PE-RT, PEX and PEX-AL-PEX. See Underfloor Heating Pipe and Multilayer PEX-AL-PEX.
Market Access
Built and Certified to North American & European Standards
Hitze manifolds and pipe are engineered to the standards your buyers ask for across both markets.
- North America: cUPC / UPC (IAPMO), NSF/ANSI 61 (potable safety), NSF-14, ASTM & CSA references for the paired pipe.
- UK / EU: CE + DoP, DVGW (German water standard), WRAS (UK potable), DIN 4726 (oxygen barrier for UFH), EN ISO 21003 / EN ISO 15875 for the pipe.
- Lead-free brass: DZR grades CW724R / CW511L.
Request the Manifold Cert Pack
Standards, listings and DoP documents for your market in one PDF, ready for your compliance and customs files. Certificate numbers available on request.
Specific certificate and listing numbers for the manifold range are available on request. Importers and private-label partners: request the full Cert Pack for the documents your market requires.
Who We Supply
Wholesale, Private-Label & Bulk Supply — for the Trade
Hitze supplies the trade, not the end consumer: plumbing & heating wholesalers, hydronic/radiant contractors buying by the pallet, private-label brands, importers and distributors across North America, the UK and Europe. Consolidate brass and stainless, 2–12 port, under one German brand — or under your own label.
Not a homeowner or one-off DIY buyer? This is a trade supply page. For a single manifold, please buy through a stocking merchant. For wholesale, OEM or private-label enquiries, talk to us directly.
- Private label / OEM — your brand on the box and the assembly. OEM options and print-line/marking specs available on request.
- No MOQ — there is no minimum order quantity. Start with samples or a small trial order, then scale to pallet volume once the line proves out.
- Warranty — backed by a 50-year warranty on the matched Hitze pipe-and-fitting system.
- Lead time / stock — current lead times and stocked lengths are detailed in the technical data sheet, available on request.
Speccing a whole job, not just the manifold? We ship manifolds as part of single-source project & spec piping supply, and back install crews with a single-source system for install crews.
Request a Manifold Quote → Become a Distributor → Start a Private-Label Enquiry →
FAQ
Underfloor Heating Manifold FAQ
Brass or stainless steel — which manifold should I fit?
How many ports should I stock?
Are flow meters included, and accurate enough to balance loops?
Will it fit my customers’ pipe, and can I brand it?
What certifications back the range?
In the Range
Manifold Connection Valves & PPR Distribution Manifolds
Nickel-plated brass connection valves and valve bodies with O-ring sealed male thread — the trim that plumbs a manifold or radiator into the loop — plus one-piece PPR distribution manifolds for fusion-welded multi-loop supply.
Get Started
Request a Manifold Quote & the Cert Pack
Tell us port count, material (brass or stainless) and volume — we reply with trade pricing, the spec pack and the certification documents for your region.