Manifold - fitted with regulating screws - 5/4 "xEK; 7-way; brass IVAR.CI 553

Product detailed description

This manifold is commonly used in residential and commercial underfloor heating systems. It enables individual flow regulation for each circuit, ensuring even heat distribution. Installers typically encounter this component in central heating installations, where it connects to primary supply lines and distributes heated water to multiple floor heating loops.

The compact design and brass construction make it suitable for both new builds and renovation projects. It is particularly useful in systems where precise thermal balance is required, such as large open-plan spaces or multi-room layouts. The threaded connections simplify installation and reduce the need for additional fittings.

Technical parameters

Material	Brass CW617N
Operating temperature	+120 °C
Nominal pressure	PN 10
Code	400007
Brand	IVAR

The nominal pressure rating of PN 10 indicates that the manifold is suitable for standard heating system pressures. The operating temperature limit of +120 °C means it is compatible with conventional heating water temperatures. These parameters help determine whether the manifold can be used in a given system without exceeding its mechanical limits.

Installation and connection

The manifold features side-mounted inlets of 1 inch female thread and 5/4 inch female thread, with seven outlets of 3/4 inch external thread. The outlet spacing is fixed at 50 mm, which must be accounted for when planning the layout of the heating circuits. During installation, ensure that all connections are clean and free of debris to prevent leaks. Apply a suitable sealing compound to the threads before tightening. Avoid over-tightening, which can damage the brass body or cause thread stripping. Verify that the manifold is level and securely mounted to prevent stress on the pipe connections. Common installation errors include incorrect orientation of the manifold, failure to align the inlet and outlet ports with the system piping, and using incompatible thread sealants that may react with the brass material.

Compatibility and accessories

This manifold is compatible with standard floor heating manifolds and distribution boxes that accept 3/4 inch external thread connections. It requires individual heating pipes of appropriate length and insulation to connect each circuit to the manifold outlets. Additional components such as balancing valves, pressure gauges, and temperature sensors may be needed depending on the system design.

Technical background for designers

The manifold operates by dividing the incoming hot water into multiple branches, each controlled by a regulating screw. This allows for individual adjustment of flow rates to maintain balanced heat output across the connected circuits. The use of brass CW617N provides high corrosion resistance and long-term reliability in wet heating environments. The material’s mechanical strength supports the nominal pressure and temperature requirements. When integrated into a system, the manifold should be placed in a location that allows easy access for maintenance and inspection. The spacing between outlets and the positioning of the inlet ports influence the overall efficiency of the system by affecting flow distribution and pressure drop.

Service and operation

Regular visual inspections are recommended to check for signs of corrosion, leaks, or wear on the threads and sealing surfaces. The regulating screws should be checked for smooth operation and adjusted as necessary to maintain system balance. There are no specific service intervals provided in the technical documentation, but any malfunction in flow regulation should be addressed promptly to avoid uneven heating.

Frequently asked questions

Can this manifold be used with a closed-loop floor heating system?
Yes, it is suitable for use in closed-loop floor heating systems provided the operating pressure and temperature remain within the specified limits of PN 10 and +120 °C.

Is it possible to replace individual regulating screws?
Yes, the regulating and shut-off screws are designed for individual replacement in case of wear or damage. Ensure that replacement parts are compatible with the manifold model.

What is the minimum distance between the manifold and the wall?
There is no specified minimum distance in the technical documentation. However, sufficient space should be left to allow for installation of insulation and access to the regulating screws.

Can this manifold be used with glycol-based heating fluids?
It is compatible with glycol-based fluids as long as the concentration does not exceed the limits specified in the manufacturer’s technical data sheet and the operating temperature remains within the rated range.