Brass 10 way manifold for underfloor heating

Product detailed description

This ten-circuit brass manifold is designed for the distribution of heating or cooling fluids in underfloor heating systems, or in combination with low-temperature radiator circuits in residential and multi-family buildings. It is commonly used in applications where individual control over each circuit is required for maintenance, balancing or zoning. The manifold allows for the division of a single 1-inch supply into ten independently adjustable circuits, each equipped with a shut-off ball valve and a flow meter. This makes it suitable for installations where thermal zones need to be isolated or adjusted without shutting down the entire system.

Typical applications include new builds and renovations with underfloor heating systems, or hybrid systems combining underfloor heating with radiators. The manifold supports both heating and cooling modes and is compatible with water-based fluids, including standard antifreeze mixtures. Its modular design allows for straightforward integration into existing heating layouts and simplifies future modifications or expansions.

Technical parameters

The technical parameters define the operating limits and compatibility of the manifold. The maximum working pressure range (4–6 bar) ensures suitability for standard heating systems. The recommended pipe size (PEX-AL-PEX 16 x 2) and compression fittings (ALPEX 16 x 2 ALU-EK) ensure secure and leak-free connections. The flow meters have a measurement range of 0–5 l/min and an accuracy of ±10%, enabling basic flow monitoring and balancing without additional tools. These parameters are essential when selecting the correct manifold for the system’s hydraulic requirements and fluid type.

Installation and connection

Installation begins with positioning the manifold in a location that allows access to all valves and meters. The main inlet and outlet connect via 1-inch threaded connections (DIN ISO EN 228-1), while the branch connections use Eurocones (Ek) for secure and vibration-resistant joints. Each circuit is connected using compression fittings compatible with PEX-AL-PEX 16 x 2 tubing. It is important to ensure that the sealing rings (EPDM) are correctly seated and that the threads are clean and undamaged to prevent leaks.

Installers should verify that the flow meters are not obstructed and that the automatic air vent is positioned for unimpeded operation. After installation, a pressure test up to 10 bar should be conducted to confirm system integrity.

Compatibility and accessories

The manifold is compatible with PEX-AL-PEX 16 x 2 piping and requires ALPEX 16 x 2 ALU-EK compression fittings for secure connections. For system organisation and protection, panel boxes for manifolds are recommended to house the unit and provide a clean finish. These boxes also help protect the manifold from mechanical damage and improve accessibility during service. Additional components such as insulation sleeves or mounting brackets may be needed depending on the installation environment.

Technical background for designers

The manifold operates by dividing a single flow of heating or cooling fluid into multiple branches, each controlled by a ball valve and monitored by a flow meter. The brass body provides good thermal conductivity and resistance to corrosion, making it suitable for use with water and antifreeze mixtures. The Eurocone and compression fittings ensure tight, vibration-resistant connections, reducing the risk of leaks in dynamic systems. The EPDM seals and automatic air vent contribute to long-term reliability and minimal maintenance.

Designers should consider the flow capacity (1.12 m³/h) and the measurement range (0–5 l/min) when planning system balancing. The maximum operating temperature of +80 °C and allowable temperature range of -10 °C to +120 °C make it suitable for both heating and cooling applications. The acoustic insulation (DIN 4109) helps reduce noise transmission through the manifold, which is particularly beneficial in residential settings.

Service and operation

During operation, the automatic air vent should be inspected periodically for blockage or wear, especially in systems with frequent thermal cycling. The ball valves should be tested for smooth operation and leakage. The flow meters require no regular calibration but should be visually checked for obstructions or damage. If the drain valve is used, it should be closed securely after draining to prevent accidental opening. There are no defined service intervals in the provided data; however, any signs of leakage or malfunction should prompt immediate inspection and repair.

Frequently asked questions

Can the manifold be used with glycol-based fluids?
Yes, it is suitable for water-based fluids with standard antifreeze additives, provided the concentration remains within acceptable limits.

Is the flow meter lockable for balancing purposes?
Yes, the dual-control flow meters feature a locking mechanism to maintain set flow rates during operation.

Can the manifold be mounted vertically or horizontally?
It can be mounted in either orientation, but the air vent must remain accessible for proper function.

What sealing material is used for the branch connections?
The Eurocone and compression fittings use EPDM seals to ensure compatibility with water and antifreeze mixtures.

Documents for download

• Hygienically certified PZH - distributors, distributor frames and accessories (PDF)