Manifold
Manufacturer & Supplier in China
When you source manifolds from Legom, you specify distribution units rated to a 16 bar maximum working pressure and a 110°C working temperature, with 1″ female main connections and 3/4″ male Eurocone branch outlets that connect directly to 20×2.0mm and 16×2.0mm floor heating pipe. Legom’s manifold range spans 2 to 12 branch configurations with main pipe flow up to 20 Kv (m³/h), in fine-polished baking-paint brass, nickel-plated brass, and chromium-rich oxide film stainless steel finishes, all thermal-actuator ready from a single factory-direct source.
Product Range
Legom manufactures brass and stainless steel manifolds for underfloor heating and hydronic distribution systems, available in three series: standard HPb 59-1 brass, nickel-plated brass, and 304 stainless steel. Each manifold distributes heated water from a single supply into individually controllable branch circuits, with 3/4" Eurocone outlets that connect directly to Legom floor heating pipe and branch valves that accept Legom thermal actuators for zone control. All series are produced at our own facility in Jiaxing, Zhejiang Province, rated to 16 bar and 110°C, and available for OEM and ODM customization.
Compare the Manifold Series
| Series | Material | Surface Treatment | Branches | Main Pipe Flow | Best For |
|---|---|---|---|---|---|
| Brass | HPb 59-1 brass | Fine polishing and baking paint | 2 to 9 | 12 Kv (m³/h) | Cost-effective standard residential systems |
| Brass Nickel-Plated | HPb 59-1 brass | Fine polishing and nickel plating | 2 to 9 | 12 Kv (m³/h) | Visible installations needing a bright, durable finish |
| Stainless Steel | 304 stainless steel | Chromium-rich oxide film | 2 to 12 | 20 Kv (m³/h) | Large, hygiene-sensitive, or lead-free systems |
Brass Manifolds
The brass series is machined from HPb 59-1 lead brass and finished with fine polishing and baking paint. It is the cost-effective, proven choice for standard residential underfloor heating, available in 2 to 9 branch configurations with body lengths from 110mm to 460mm. Models: M-B25 and M-B32.
| Parameter | Specification |
|---|---|
| Main Material | HPb 59-1 brass |
| Connection Spec. | F1" * M3/4" |
| Maximum Working Pressure | 16 bar |
| Working Temperature | 110°C |
| Working Medium | Water |
| Surface Treatment | Fine polishing and baking paint |
| Max. Flow Rate of Main Pipe | 12 Kv (m³/h) |
| Max. Flow Rate of Branch Pipe | 1.5 Kv (m³/h) |
| Branches | 2 to 9 (110mm to 460mm) |
| Eurocone | 20*2.0, 16*2.0 |
| Distance Between Branches | 50mm |
Brass Nickel-Plated Manifolds
The nickel-plated brass series uses the same HPb 59-1 brass body with a nickel-plated finish over the polished surface, adding enhanced corrosion resistance and a bright, durable appearance for visible manifold cabinets. It shares the same 2 to 9 branch range and performance as the standard brass series. Models: M-BN25 and M-BN32.
| Parameter | Specification |
|---|---|
| Main Material | HPb 59-1 brass |
| Connection Spec. | F1" * M3/4" |
| Maximum Working Pressure | 16 bar |
| Working Temperature | 110°C |
| Working Medium | Water |
| Surface Treatment | Fine polishing and nickel plating |
| Max. Flow Rate of Main Pipe | 12 Kv (m³/h) |
| Max. Flow Rate of Branch Pipe | 1.5 Kv (m³/h) |
| Branches | 2 to 9 (110mm to 460mm) |
| Eurocone | 20*2.0, 16*2.0 |
| Distance Between Branches | 50mm |
Stainless Steel Manifolds
The stainless steel series is built from 304 stainless steel with a protective chromium-rich oxide film. It is lead-free and hygienic, with a higher 20 Kv main pipe flow and a wider 2 to 12 branch range, making it the strongest choice for large, hygiene-sensitive, or higher-capacity systems. Models: M-S25, M-S32, and M-SS25.
| Parameter | Specification |
|---|---|
| Main Material | 304 stainless steel |
| Connection Spec. | F1" * M3/4" |
| Maximum Working Pressure | 16 bar |
| Working Temperature | 110°C |
| Working Medium | Water |
| Surface Treatment | Chromium-rich oxide film |
| Max. Flow Rate of Main Pipe | 20 Kv (m³/h) |
| Max. Flow Rate of Branch Pipe | 1.5 Kv (m³/h) |
| Branches | 2 to 12 (126mm to 637mm) |
| Eurocone | 20*2.0, 16*2.0 |
| Distance Between Branches | 50mm |
All series share 1" female main connections, 3/4" male Eurocone branch outlets for 20x2.0mm and 16x2.0mm pipe, a 16 bar pressure rating, and a 110°C working temperature. Exact body lengths vary by branch count and model. Contact the Legom Technical Team to confirm dimensions and select the right manifold for your system.
How to Select the Right Manifold
Choosing the correct manifold comes down to your material and finish preference, the number of zones and flow your system needs, and your pipe and actuator compatibility. Confirm these three points before ordering:
Material and finish
Choose standard HPb 59-1 brass for a proven, cost-effective option in concealed manifold cabinets. Choose nickel-plated brass where the manifold is visible and a bright, corrosion-resistant finish matters. Choose 304 stainless steel for lead-free, hygiene-sensitive systems and the highest corrosion resistance.
Number of zones and flow
Match the branch count to the number of heating zones in your project. The brass series covers 2 to 9 ports with a 12 Kv main pipe flow, suitable for most homes. The stainless steel series extends to 12 ports with a higher 20 Kv main pipe flow, supporting larger houses and light commercial buildings.
Pipe and actuator compatibility
All series use 1" female main connections and 3/4" male Eurocone branch outlets for 20x2.0mm and 16x2.0mm pipe, connecting directly to Legom floor heating pipe. The branch valves accept Legom thermal actuators, so confirm your pipe size and actuator type when ordering.
Once you have these three points, the Legom engineering team can recommend the right series and branch count, or start a custom OEM project. Contact us via WhatsApp or info@legomsmart.com.
Manufacturing Capacity
Legom's manifolds are produced at our facility in Jiaxing, Zhejiang Province, China, with in-house CNC machining of brass and stainless steel bodies, branch valve assembly, surface treatment, and pressure testing on every unit. This integrated production allows consistent quality and batch-to-batch repeatability for distributors and system integrators worldwide.
| Parameter | Detail |
|---|---|
| Production Location | Jiaxing, Zhejiang Province, China |
| Materials | HPb 59-1 brass and 304 stainless steel |
| Surface Treatments | Fine polishing with baking paint, nickel plating, or chromium-rich oxide film |
| Branch Range | 2 to 12 ports |
| Main Connection | 1" female (F1") |
| Branch Outlets | 3/4" male Eurocone for 20x2.0mm and 16x2.0mm pipe |
| Maximum Working Pressure | 16 bar |
| Working Temperature | 110°C |
| Main Pipe Flow | Up to 20 Kv (m³/h) |
| Distance Between Branches | 50mm |
| Quality Inspection | Pressure and leak testing on every unit |
| Primary Export Markets | 90+ countries served globally |
| Shipping Methods | Sea freight / Air freight / Express courier |
| OEM Partners | 400+ globally |
As a direct manufacturer, Legom supplies manifolds to underfloor heating system builders and HVAC distributors across 90+ countries through 400+ OEM partners. The company also produces the matching components for a complete hydronic system, including floor heating pipe, thermal actuators, HVAC valves, and room thermostats.
Production Process
7-Stage Production Process
Every Legom manifold passes a structured 7-stage process, ensuring the machining accuracy, finish quality, and leak-free performance that B2B buyers depend on at scale.
Material Intake
HPb 59-1 brass bar or 304 stainless steel inspected for grade and dimension
CNC Machining
Manifold body, main connections, and branch ports precision-machined to tolerance
Component Assembly
Branch valves, flow paths, and seals assembled into the manifold body
Surface Treatment
Brass polished and finished with baking paint or nickel plating; stainless passivated for the chromium-rich oxide film
Eurocone and Seal Fitting
3/4" Eurocone outlets and seals fitted and torque-checked on each branch
Pressure and Leak Testing
Each manifold pressure-tested to confirm leak-free operation
Final QC and Packaging
Dimensions, finish, and flow verified before packaging for export
Each Legom manifold is produced through this controlled process at our Jiaxing facility. Brass and stainless steel stock is precision-machined into the manifold body and branch ports, then branch valves and seals are assembled before surface treatment. After the Eurocone outlets are fitted, every manifold is pressure tested for leak-free operation and passes a final quality and dimensional check before packaging.
What Legom's OEM Service Covers
Legom's OEM and ODM service for manifolds covers the full development and production cycle:
- ● Material selection: Legom's engineering team helps you select HPb 59-1 brass, nickel-plated brass, or 304 stainless steel based on your budget, finish, and corrosion requirements.
- ● Branch and dimensional customization: Branch count, body length, and branch spacing can be configured to match your system layout and zone count.
- ● Connection and finish customization: Connection threads, Eurocone sizing, and surface finish can be adapted to your pipe system and branding.
- ● Sample and approval cycle: Samples are produced and tested against your specification before production commitment.
- ● Production batch testing: Pressure and leak test records are available for production batches.
- ● Confidentiality: All OEM and ODM projects are handled under strict NDA.
Applications
Legom manifolds are used wherever heated water must be split from a single supply into multiple individually controlled circuits. They are the distribution hub of a manifold-based hydronic system in homes, commercial buildings, and renovation projects.
Underfloor Heating Distribution
The primary application. The manifold splits supply and return water into individual floor heating loops, each controlled separately for room-by-room temperature management. Pair it with Legom floor heating pipe and thermal actuators for a complete system.
Multi-Zone Residential Heating
The 2 to 12 branch range covers everything from a single small apartment to a large multi-room house, with one branch per heating zone and a room thermostat per zone.
Commercial Hydronic Systems
The stainless steel series, with its higher 20 Kv main pipe flow and corrosion resistance, suits light commercial heating distribution where durability and capacity are priorities.
Heat Pump and Boiler Systems
Connects a heat pump or condensing boiler to multiple low-temperature floor loops, distributing flow evenly across circuits from a single supply and return point.
Radiant Wall and Ceiling Heating
Distributes water to radiant panel circuits in wall and ceiling systems where independent zone control and balanced flow are design requirements.
Renovation and Retrofit Projects
The compact 50mm branch spacing and standard Eurocone connections allow the manifold to be fitted into existing manifold cabinets during refurbishment.
Frequently Asked Questions
Legom manufactures manifolds in three series: standard HPb 59-1 brass, nickel-plated brass, and 304 stainless steel. All are produced in-house at our Jiaxing facility, rated to 16 bar and 110°C, with 3/4" Eurocone branch outlets and branch valves that accept Legom thermal actuators.
Both perform well for underfloor heating. Brass manifolds are a proven, cost-effective choice for standard residential systems and cover 2 to 9 branches. Stainless steel manifolds are lead-free with the highest corrosion resistance, a higher 20 Kv main pipe flow, and a wider 2 to 12 branch range, making them the stronger choice for larger, higher-capacity, or hygiene-sensitive systems.
HPb 59-1 is a lead brass alloy known for excellent machinability and high mechanical strength, which makes it well suited to precision-machined manifold bodies that hold pressure and accept threaded connections. It is widely used in plumbing and heating components carrying water.
Nickel plating adds a hard, bright protective layer over the polished brass body. It improves corrosion resistance, gives a clean and durable surface that resists tarnishing, and is easy to wipe down. This makes the nickel-plated series a good choice where the manifold is visible, such as in open manifold cabinets.
304 is an austenitic stainless steel that combines high strength with outstanding corrosion resistance and a hygienic, lead-free surface. Stainless steel naturally forms a passive chromium-rich oxide film on its surface, which is self-repairing: if scratched, the exposed chromium reacts with oxygen and reforms the protective layer. This film is what gives the stainless series its long-term corrosion resistance.
The brass and nickel-plated brass series are available in 2 to 9 branches, and the stainless steel series in 2 to 12 branches. Branches are spaced 50mm apart, so body length increases by 50mm per branch. Select the branch count to match the number of heating zones in your project. Refer to each product page for the full branch-by-branch length table.
The main supply and return connections are 1" female (F1"), and the branch outlets that feed each floor loop are 3/4" male (M3/4"). The 3/4" branch outlets use the Eurocone standard, so they connect to floor heating pipe through standard 3/4" compression unions.
The 3/4" Eurocone branch outlets accept 20x2.0mm and 16x2.0mm pipe, where the figures are the pipe outer diameter and wall thickness. This makes the manifolds compatible with standard Legom floor heating pipe in those sizes, using standard Eurocone compression unions.
Yes. The branch valve heads accept Legom thermal actuators, which open and close each loop in response to a room thermostat or controller for automatic zone control. The 50mm branch spacing leaves clearance for each actuator to be installed and serviced.
Yes. Legom is a direct manufacturer offering full OEM and ODM services for manifolds, including customization of material, branch count, body length, connection threads, and surface finish. All customization projects are handled under strict confidentiality. Contact our team to discuss your requirements.
Legom is a manufacturer. Our manifolds are produced at our own facility in Jiaxing, Zhejiang, China, with in-house CNC machining, assembly, surface treatment, and pressure testing. We supply distributors and system integrators in 90+ countries directly, and we also manufacture the matching floor heating pipe, thermal actuators, HVAC valves, and room thermostats for complete hydronic systems.