Manifold - with EK pins, 1" x EK, 3-way

Product detailed description

This three-way manifold is suitable for installation in heating and sanitary distribution systems in residential and commercial buildings. It enables controlled flow distribution between three separate circuits or zones, commonly used in underfloor heating, panel heating, or multi-loop systems. The unit provides side-mounted FM connections for supply and return lines and EK pins for connecting individual circuit components. Installers should ensure correct orientation and alignment during fitting to avoid leakage or flow imbalance.

The manifold is typically integrated into systems requiring balanced flow management, such as radiant floor heating or domestic hot water circuits. It allows for modular expansion and maintenance of individual loops without disrupting the entire system. The nickel-plated brass body ensures corrosion resistance, while the EPDM seal maintains integrity under thermal cycling. The design supports compact installation due to the 40 mm spacing between EK pins.

Technical parameters

Installation and connection

Installation requires connecting the side FM ports (3/4” and 1”) to the supply and return mains using standard compression or threaded fittings. The EK pins connect to individual circuit components, such as valves or heat emitters, using push-fit or soldered fittings. The 40 mm spacing between EK pins should be considered when planning component placement to avoid interference. Installers must ensure all connections are fully tightened and sealed, particularly around the EPDM O-ring, to prevent leakage. A common mistake is misalignment of the EK pins during fitting, which can lead to poor contact and potential flow restriction.

Compatibility and accessories

This manifold is compatible with standard heating and plumbing systems using FM and EK connections. To complete the installation, additional components such as valves, thermostats, and balancing tools may be required. Related products include IVAR manifold kits and EK pin-compatible fittings. When designing the system, ensure that the total number of EK-connected devices does not exceed the manifold’s hydraulic capacity and that the overall system pressure remains within the PN 10 limit.

Technical background for designers

The manifold operates by dividing the incoming flow into three controlled outputs, each connected via EK pins. The nickel-plated brass body offers high durability and resistance to corrosion from water and glycol mixtures. The EPDM O-ring provides a flexible seal that adapts to thermal expansion and contraction, maintaining a tight connection over time. Designers should consider the thermal expansion characteristics of the manifold and plan for sufficient clearance around the body. The PN 10 rating and +120°C limit define the maximum conditions for safe operation, ensuring long-term performance in heating and sanitary applications.

Service and operation

Regular inspection of the manifold’s connections and seals is recommended to detect early signs of wear or leakage. The EPDM O-ring should be checked for hardening or cracking, especially after prolonged exposure to high temperatures. There are no scheduled service intervals specified for this model, but any visible damage or operational anomalies should prompt immediate inspection. Maintaining clean fluid in the system helps prevent clogging of the EK pins and ensures consistent flow distribution.

Frequently asked questions

Can this manifold be used in a domestic hot water system?
Yes, provided the system operates within the specified temperature and pressure limits of +120°C and PN 10. The EPDM seal is suitable for water-based fluids.

Is it possible to connect more than three devices to this manifold?
No, the design supports three EK pins only. Additional devices would require a larger manifold or multiple units.

Can the EK pins be replaced individually?
Replacement of EK pins is not supported for this model. Any damage to the pins may require replacing the entire manifold.

Is this manifold suitable for use with glycol solutions?
Yes, the nickel-plated brass body and EPDM O-ring are compatible with glycol-water mixtures commonly used in heating systems.