Central Heating Manifold

Parameters of Central 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


Brass, CW617N


1", 3/4"



Thread connection


Working pressure

7 bar


2-5 ways




24 months

Details about Central Heating Manifold


Central heating manifold


12 and 16(mm) PEX fitting;Max working pressure;1 Mpa(10Bar)

Working pressure;0.7Mpa

DN20X16-3 way
DN20x16-4 way
DN20x16-5 way
DN25x16-2 way
DN25x16-3 way
DN25x16-4 way
DN25x16-5 way

3/4″ and 1″ by the two options

Diverter installation is completed for testing,

1. Open the water inlet and return valves, the main water into the manifold, remove the flowmeter red sheath spin up the flow adjustment (collector spool open).
2. Automatic exhaust loose small cap, let the exhaust be in the automatic state, discharge the air inside the manifold.
3. Test the system in the fully open state to see if there are any safety leaks, and test the system for 24 hours (the pressure is stabilized at 1.0~1.2MPa),
4. pressure test 24 hours, check whether there is water seepage or dripping phenomenon in each component connection point. If an urgent shutdown is found into the return valve, repair the pipeline, and re-test.
5. System test indicators can fully meet the user’s requirements, and the pressure system pressure is back to normal use pressure, according to the user’s requirements for the use of fixed.
Note: The highest pressure value of the system can not exceed 1.2MPa.

Brass heating manifold



Max Manifold pressure


Manifold Materials

Normal brass, Lead-free brass

Manifold Standards

BS2779,EN331,ISO228,DIN 259

Working Temperature:

From 5 ℃ To +98 ℃

Seat sealing Material:



 Manifold clamp, air vent valve, Pex fitting, Adapter

Thread connection:

NPT, BSPT, BSP, Custom

Quality/valve Certifications



Nickel-plated, Chrome plated


Brass cartridge

Manifold operator

Handwheel, Worm Gear


Pex Manifold 

O ring


Working temp.


Central PEX (cross-linked polyethylene) heating manifold is a plumbing system that distributes heated water or other fluids throughout a building. The manifold connects to a boiler or other heat source and distributes the heated fluid through a network of PEX pipes that run through walls, floors, and ceilings to provide heat to different rooms or zones. Here’s more information about central PEX heating manifold applications, raw materials, installation, sizes, and tips:


  • Residential and commercial heating systems
  • Radiant floor heating systems
  • Baseboard heating systems
  • Hydronic heating systems

Raw materials:

  • PEX pipes
  • Brass or stainless steel manifold
  • Pipe fittings and adapters
  • Insulation
  • Mounting brackets


  1. Determine the number of heating zones or rooms and calculate the required length of PEX pipe for each zone.
  2. Install the manifold in a central location, usually near the heat source, and connect it to the supply and return lines.
  3. Install the PEX pipes in each zone and connect them to the manifold using fittings and adapters.
  4. Insulate the PEX pipes to minimize heat loss and improve efficiency.
  5. Mount the manifold to the wall or floor using brackets.
  6. Fill the system with water and purge the air from the pipes.

Sizes: Central PEX heating manifold systems are available in various sizes, depending on the number of zones or rooms they are designed to heat. Manifolds can have as few as two ports and as many as 24 or more. The PEX pipes’ size will also depend on the heating load and the length of the pipes.


  • Make sure to properly size the manifold and PEX pipes for the heating load and the length of the pipes.
  • Use high-quality PEX pipes and fittings to ensure a long-lasting and leak-free installation.
  • Insulate the PEX pipes to minimize heat loss and improve energy efficiency.
  • Purge the air from the pipes to prevent noisy operation and air pockets that can cause damage to the system.
  • Consider installing a mixing valve to control the temperature of the heated fluid and improve comfort and efficiency.
  • Choose a suitable location for the manifold that is easily accessible and centrally located. This will make it easier to install and maintain the system.
  • Use a pressure gauge and pressure relief valve to monitor the pressure in the system and prevent over-pressurization.
  • Use a flow meter or balancing valves to ensure the even distribution of heated fluid to all zones or rooms.
  • Consider using a smart thermostat or zone control system to optimize the system’s heating performance and energy efficiency.
  • Regularly inspect and maintain the system to ensure proper operation and prevent leaks or other problems.
  • If you are not experienced with plumbing or heating installations, consider hiring a professional to install the system to ensure a safe and reliable installation.

A central PEX heating manifold system is an effective and efficient way to distribute heat throughout a building. By selecting high-quality materials, properly sizing and installing the system, and following best practices, you can enjoy comfortable and reliable heating for years to come.

A brass heating manifold is a type of central heating manifold constructed from brass material. It serves as a central distribution point for hot water in a hydronic heating system and is used to connect the hot water supply and return pipes to individual heating zones or circuits. Brass heating manifolds have become popular in recent years due to their durability, corrosion resistance, and ease of installation. Here are some additional details about brass heating manifolds:

Materials: Brass heating manifolds are typically made of high-quality brass material. This is because brass is known for its excellent corrosion resistance, durability, and long-term reliability. The brass material used in the manifold is typically lead-free to prevent any potential contamination of the heating water.

Applications: Brass heating manifolds are used in a variety of applications, including:

  • Radiant heating systems
  • Underfloor heating systems
  • Baseboard heating systems
  • Hydronic heating systems

Installation: Brass heating manifolds are relatively easy to install, especially when compared to other types of heating manifolds. They typically come pre-assembled and can be installed using basic plumbing tools. The following are the basic steps for installing a brass heating manifold:

  1. Determine the number of zones or circuits required for the heating system.
  2. Choose a suitable location for the manifold that is accessible and central to the heating system.
  3. Install the manifold onto a suitable support bracket.
  4. Connect the hot water supply and return pipes to the manifold.
  5. Connect the individual zone/circuit lines to the manifold using the appropriate fittings and adapters.
  6. Fill the system with water and purge any air pockets from the piping.

Sizes: Brass heating manifolds are available in various sizes, ranging from 2 ports to 12 ports or more. The manifold size will depend on the number of zones/circuits in the heating system.

In conclusion, brass heating manifolds are a durable, reliable, and efficient way to distribute hot water throughout a hydronic heating system. Selecting a high-quality brass manifold and following proper installation procedures ensures that your heating system operates smoothly and efficiently for years to come.

water pressure gauge

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 ball Valve is with CW617N and Lead-free original brass. And water flows with 2pc full Port 400WOG and 600WOG standard to design it with heavy-duty. EPDM and NBR sealing washers are environmentally friendly, with Three years warranty with traceability.

Woman's hand closes the valve. Saving Water Consumption Concept
  •  Plumberstar Valve Made from brass and stainless steel 304, and sourcing HPVC ball valve
  • Connected from the thread with BSP(G) and NPT by the normal.
  • Size with MaleXFemale 1/4inch,3/8 inch,1/2inch,3/4,1inch,1 inch,1-1/4 inch,1-1/2 inch,2inch,2-1/2inch,3inch and 4inch.
  • The actuator of electric valve voltage 24V DC and 230V AC
  • Shut-off needle valve can manufacture based on requirements
  • Heating floor manifold with 1-inch gauge and flowmeter
  • Brass nipple, elbow, extension, compression fitting, adapter available

Plumberstar Valves Applications

y drain strainer

Y-filter Strainer Drain Valve

Plumberstar Y filter strainer Keeps Working, and dirty Out Strainer screen catches debris and sediment to reduce maintenance. Protect your water plumbing. Y Type Strainer works in conjunction with your backflow preventer and regulators.

water tanker safety valve

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.

thermostatic valve pump mix water control

Temperature Mixing Valve

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

radiant pex manifold 12 connector adaptortubing

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.

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 15 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.
Brass fittings are made of lead-free and CW602N for durability and corrosion-resistant quality and performance.

brass fitting machine

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

working of a gas shut off valves

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

Design Valves For House

Valve Project Designing

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

project discussion

Plumbing Control Proposal

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

Fix ball Valve

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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There are 5 engineers and 15 experts about QC&QA behind your projects

Why Choose Plumberstar?

Brass is a highly durable material for valves that can withstand temperatures and pressure. It is also corrosion-resistant, making it an ideal choice for wet environments. Brass valves are also easy to clean, an important consideration for plumbing systems. We manufacture brass valves, which are two-piece brass ball valves with 600 and 400-WOG threaded ends that are not for use in potable water.

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