Novus Ø125 mm HDPE Manifold
Ø125 mm HDPE Manifold is an HDPE (PE100) manifold made from a Ø125 mm body with a 102 mm internal diameter, with a project-specific length and branch layout. At a water velocity of 1.0–1.5 m/s it is suitable for flow rates of 29.6 – 44.4 m³/h and, at ΔT = 20 K, a thermal output of 688 – 1,032 kW. Branch sizes, outlet directions and connection type are specified with the order.
Technical Specifications
| Specification | Value |
|---|---|
| Body size | Ø125 mm (SDR 11) |
| Approx. inner diameter | 102 mm |
| Recommended flow rate (v = 1.0 – 1.5 m/s) | 29,6 – 44,4 m³/h |
| Approx. thermal capacity (ΔT = 20 K) | 688 – 1,032 kW |
| Body length | Project-specific (to your drawing) |
| Branch sizes | 32 · 40 · 50 · 63 · 75 · 90 · 110 · 125 mm |
| Outlet connection | Butt fusion, electrofusion, flanged (PE flange adapter + steel flange) or threaded adapter |
| Operating temperature | 40 °C (PE100, continuous operation) |
| Pressure rating | PN 10 – PN 16 (SDR 11 / SDR 17) |
| Material | PE100 (HDPE) |
| Manufacturing | Novus Energy – custom-made for your project |
What capacity is a Ø125 mm manifold suitable for?
With a body inner diameter of 102 mm, the cross-sectional area is 0.0082 m². Using Q = A × v × 3600, the recommended flow rate is 29.6 – 44.4 m³/h; with P = Q × 1.163 × ΔT, the thermal capacity at ΔT = 20 K is 688 – 1,032 kW. If your heating circuit runs at ΔT 15 K, capacity drops by about one quarter.
Number of branches suitable for this body
The manifold body cross-section is selected to be at least 1.5 times the total cross-sectional area of the branches. For a Ø125 mm body, this rule gives the following upper limits:
| Branch size | Recommended max. quantity |
|---|---|
| Ø50 mm | 4 pcs |
| Ø63 mm | 2 pcs |
| Ø75 mm | 1 pc |
| Ø90 mm | 1 pc |
Values are based on the cross-section rule only; the exact number depends on the center-to-center spacing, valve/fitting width and body length.
Connection and end options
Outlets can be made as butt fusion, electrofusion, flanged (PE flange adapter + steel flange) or threaded adapter connections; different types can be combined on the same body. The body ends are closed with blind plugs, dished caps, flanges, weld ends or threaded ends. Ball/butterfly valves, pressure gauge–thermometer pockets, drain valves, air vent connections, support legs and brackets are added on request.
Made to measure
For the Ø125 mm body, the length, number of branches and center-to-center spacing can be produced in any combination. When you select the dimensions in the manifold configurator, a dimensioned A4 technical drawing, a 3D model and a quote summary are generated instantly; you can also send your drawing via WhatsApp to get a price and lead time.
Related sizes: Ø110 mm HDPE manifold · Ø160 mm HDPE manifold · all HDPE manifold sizes · selection guide
Frequently asked questions
What capacity is a Ø125 mm manifold suitable for?
A Ø125 mm body is suitable for a flow rate of 29.6 – 44.4 m³/h at a water velocity of 1.0–1.5 m/s. Assuming ΔT = 20 K, this corresponds to approx. 688 – 1,032 kW of thermal output — roughly a heating plant for 85 apartments. At other ΔT values, capacity changes proportionally.
What is the price of the Ø125 mm HDPE Manifold?
The price is project-specific, as it is calculated from the body length, number and size of branches, connection type, pressure rating and options. Send us your dimensions and we will get back to you with the price and lead time.
Do I specify the body length and number of branches myself?
Yes. Length, number/size of branches, outlet directions and center-to-center spacing are all made to your drawing. You can make your selections in the configurator and print an A4 technical drawing.
Last updated: September 20, 2026 · Prepared by: Novus Energy engineering team — manifold fabrication and metering systems. To verify dimensions and capacity, contact us via WhatsApp or at +90 216 642 42 66.