Underfloor Heating Manifold

Parameters of Underfloor Heating Manifold

The Manifold connects the heat source – a boiler, heat pump, or other – with the water underfloor heating circuits, regulates the incoming water temperature via the Mixing Unit and distributes this warm water throughout the floor circuits for an energy-efficient heating system.

Additional information


Stainless steel





Thread connection


Working pressure

16 bar






12 months

Details about Underfloor Heating Manifold

Underfloor Heating Manifold


  • Stainless steel Manifold
  • Stainless steel 304
  • Polishing surface treatment
  • Operating temperature;-10-110℃
  • Working pressure; Max 16 bar
  • Connection thread; 3/4″&1/2″ loop
  • Hard sealing with a flexible fitting connection.
  • Manufactured from corrosion-resistant and durable Stainless Steel to last for life
  • Compatible with any PEX tubing – no special adapters needed
  • Simply mount the manifold on brackets and connect the valves and PEX tubing
  • The manifold connects the heat source – a boiler, heat pump, or other – with the water underfloor heating circuits, regulates the incoming water temperature via the Mixing Unit, and distributes this warm water throughout the floor circuits for an energy-efficient heating system.
  • It is made from High-Quality Stainless Steel to last for life.
  • An automatic air vent (air eliminator); Float air vent purges the air out of the radiant heat system. The air vent cap is included for pressure testing purposes.
  • Drain valves; Both drain valves feature a 3/4″ male garden hose connection for convenient draining/filling of the system. Caps included.
  • Mounting brackets with bolts; Heavy-duty design and custom engineered to offset the manifold from the mounting surface for easy access and installation of PEX tubing.
  • 1/2″ PEX Manifold Adapters- free with manifold’s purchase. Compatible with all types of PEX tubing
  • You should install a heating manifold in a central area. It will reduce your installation cost of tubing. Manifolds have High reliability. It is also low in maintenance cost. The installation cost depends on the location of a manifold. During planning, the system designer needs to consider access first. The designer should be qualified enough. Experienced and professional underfloor heating installers should install underfloor heating manifolds. It would be best if you placed the manifold in an accessible area for future servicing and commissioning. The underfloor and the bottom of the manifold should be between 200 millimeters. Clearance should be 75mm above and at least 50mm on either side. A heating manifold might use only one tubing, though more than ten tubing lines can sometimes be used. For more than an average number of connections, manifolds can be made in the job sector, or You can also order with the required specifications. You can also find ready-made manifolds in the market with the needed number of connections. You can install manifolds with spare connection ports if you need enlargement later. You can also crop out the unused connection points if not required. The two units are often placed together. Only one bracket can support both units. The floor area can get warmed to between 25°C and 28°C. It can provide an even distribution of heat. It can maintain only a little higher temperature than room temperature. Among many other UFH systems, this is a unique feature of the heating manifold.

    Heating manifold



    Manifold Gauge

    Flow meter

    Manifold Materials

    Stainless steel 304

    Manifold Port

    From 2-12 loops


    From 5 ℃ To +110 ℃

    Pump Motor



    Flow meter, manifold clamp, air vent valve, pressure gauge

    Thread connection:

    ISO228,BS2779,DIN 259, ASME B1.20.-1983 Pipe Thread

    Quality Certifications





    Brass cartridge

    Manifold operator

    Handwheel, Auto control


    Manifold Heating

    O ring



    3/4″x20; 3/4″x16

    Working Principle of Heating Manifold


    Underfloor Heating is not a new technology. The principles go back to Roman times. In Europe, it is very much popular now. In some countries, 70% of new heating installations are manifolds.

    The Heating Manifold links with the heat source with a boiler connecting the water with underfloor heating circuits. It regulates the temperature of incoming water via the mixing unit. It also allocates hot water throughout the floor circuits. It provides efficient Heating for energy. Underfloor heating circuits are always filled and removed with water. It happens after a successful installation & connections. The primary heating circuit of the manifold creates a connection with a heat source. Heat sources can provide demanded water temperature. It never gets overheated. The mixing unit will deactivate the system at that time.

    A heating manifold is made of two parts where one is a flow manifold, and another is a return manifold. The flow manifold has a flow meter. It indicates the flow rate achieved in each loop. There is a valve in the return bar to control the loop. An actuator valve controls the opening/closing. It responds to the call from a room thermostat.

    Close the valve on the supply manifold (clockwise). Lift and turn a setting ring, graduated 0.5–5. It will balance each underfloor heating loop. Now press the ring down. The valve will then open. There might be flowmeters instead of supply valves. Adjust the flowmeters by corresponding to the calculated ring. Setting the ring helps to prevent any loop from opening too far. The filling valve of the supply line can reduce or stop the flow in the bypass.


    Common Under Floor Heating Manifold Problems


    There might arise a few situations causing the heating manifold not to work. These include:

    • Air in the system. Blow the air off the system using the air vent, which can be placed on the flow bar of the manifold. It will rectify any air-caused problems.
    • Incorrect or imbalanced flow rates. One can adjust it using the flow meters on the flow bar. The correct rate will depend on the design of the system.
    • Blockage in the system. There might be blockage by any physical item. In this case, flush the system through. It will free the debris.


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Metals Vavles Works on Plumbing System

Plumberstar valve fabricator in China. Our main parts for heating pipelines and intelligent water control can supply you with a one-stop basket solution to get your ideas and demands. From design to packaging and logistics are our duty—brass valves and fittings applied in-house, in industry, and commercial construction, in residential. There are related to water pipe control solution, and we have rich experience for outdoor frostproof hydrant and pex heating water manifold indoor.

The Top Standard Valves

Plumberstar, founded in 2006, offers high-quality, customizable residential valves and pipe fittings for plumbing and heating systems, including metal valves, brass products, bibcocks, and stainless steel accessories.
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Plumberstar offers brass and stainless steel 304 valves, as well as HPVC and cast iron plumbing parts. Available in sizes ranging from 1/4 inch to 4 inches with BSP(G) and NPT threads. Products include shut-off needle valves, heating floor manifolds with 1-inch gauges and flowmeters, brass nipples, elbows, extensions, compression fittings, and adapters. Custom manufacturing plumbing products is also available.

How to benefit You

Plumberstar delivers reliable, high-quality plumbing solutions with competitive pricing, extensive customization, and free pressure testing. Our ISO 9001 certified products ensure safety, efficiency, and durability, meeting international standards for residential and commercial needs.

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Mixing water valve automatic ensure temperature and water pressure stable. It is suitable for household hot water devices equipped and floor heating, so the 3-way valve meets requirements of temperature range and the water flow

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PEX Heating Manifold

Plumberstar radiant pex manifolds are usual for residential water distribution in a household, and it's top rated in the home building industry. Manifold plumbing systems control hot and cold water that feeds flexible PEX supply lines to individual fixtures.

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Safety Water Solution

Plumberstar works in residential, irrigation, and commercial application. The relief safety valves are used in various applications, such as water heaters, air compressors, its automatic release of the excess pressure or vacuum from a heating system.

Advantages of Plumberstar

Plumberstar products design based on simple structure aim to time-saving installation for consumers and aim to save the cost of customers for building construction.

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We boast 18 years of expertise in water and gas projects and long-term partnerships with top global clients.

We offer competitive pricing, tailored solutions, and flexible solutions. Quality is our cornerstone. We conduct three random inspections and a final QC check for each project, with detailed reports for clients and a 48-hour emergency response system.

Customize-Design Brass Copper Fitting

Copper Pipe fitting 1/2 inch 90-degree Elbow, nipple, bush, and reducer connects PEX Pipe in water distribution and hydronic heating systems.
Low-cost solution to connect copper Pipe Tubing, stainless steel insert, and adapter. The connection system is perfect for your next commercial or homeowner plumbing project.

Advantages for distributer, wholesaler, Supermarket and Trading

Plumberstar is looking for long-time cooperation with partners, our advantage will benefit each other, and growing together, our extra service including design, new tooling, discount and quality tracing system.

★ Moderate Pricing – Plumberstar can provide various projects with different economic basket services. Water control project drawing design and artwork works are free. 

MOQ and Delivery – Lower MOQ even reaches 100 units and sampling time within 15 working days, and the leading time is 30 working days of mass production,

Non-Disclosure Agreement – Plumberstar will not provide your competitors with the same valves and manifolds. And help you to get more market shares.

Quality and Service–Our defect rate reached 0.459% in the last two years from customers feedback, and the Inspection report can provide you with each order

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Discount and Quantity– Heavy quantity can increase production capacity with effectiveness. And the accessories and spare parts purchased with competitive cost of valves.

Plumberstar Extra Service

Our aim is not only to provide valves but we help customers to design products,design artwork,valve proposal, book shipment,Installation tutorial

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Valve Project Designing

We are free design your valves according to your inquiry of your plumbing system,no extra cost.

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Plumbing Control Proposal

We can help you choose valves and heating manifold, and advice in house application

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Fluid Control Installation

We can provide an installation guide and tutorial about valves and underfloor heating manifold

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Shippment Service Solution

We help customers to book a container, documents preparation, and clearance, even to warehouse

Frequently Asked Questions

Here are typical questions by customers asked with usual, please feel free contact us if any further confused.

Brass valves have many different types, such as ball valves, garden tap, check valve, strainer, angle valve, gate valve, foot valve, and drain valve. The radiator valve and thermostatic mixing valve are works for water temperature. All of these valves are work for water plumbing systems, plumbing repair, and installation. So have to let water shut-off and shut-on. Some heating systems are related to hot water and cold water mixing for temperature control and stability. Our intelligent valves are functional. There are applications in commercial, residential, and industrial areas.

Underfloor heating radiant pex manifolds are usual for residential water distribution in a household, and it's top-rated in the home building industry. Manifold plumbing systems control hot and cold water that feeds flexible PEX supply lines to individual fixtures. Then water temperature is warm and stable in each room. Meanwhile, the heating accessories-flow meter gauge will monitor water and temperature in each room.

The motorized ball valve works automatically open and closed; they work with 220v-230v AC and 24v DC; they are applications in the heating system, air conditioner,3D printer, and others. The solenoid valve is with similar features.

Would you please submit the form at the bottom of the page or send an email directly:info@plumberstar.com? My WhatsApp: +86 15968648802. Can you send us pressure demands, size package, and quantity if available?

It's able to provide free samples for your evaluation with 15 working days about.

Our MOQ is significantly lower from 100-5000 pcs are available. It depends on different items.
We can fabricate your specified requirements.

It's about 35 days if with regular proucts; New tooling and samples will take 15-20 days, Normal samples will take 7 days.

It means that you need to check the plumbing system at first, then realize your requirements, and get out different valves with different applications and functional with controlling; of course, may be no need to use brass valves due to the high cost. You can use plastic, iron, zinc alloy, and aluminum raw materials instead of brass, but brass and stainless steel are reliable with 3 years warranty. If you don't know how to choose, please call us or email us.

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