Manifold - with outlets EK - 5/4 "xEK; 4-way; nickel IVAR.CS 501 NK

Product detailed description

This 4-way manifold is commonly used in residential and commercial heating systems to distribute flow across multiple circuits. It allows for precise control and balancing of heat distribution in underfloor heating, radiant panels or multi-zone systems. The nickel-plated construction ensures corrosion resistance and durability in wet environments. Installers should ensure correct orientation and alignment during fitting to avoid misalignment of outlets.

The manifold is typically mounted in mechanical rooms, under raised floors or within dedicated service enclosures. It connects to primary supply lines via side-mounted inlets and provides secondary outputs for individual circuits. The compact design and fixed outlet spacing simplify integration with pre-fabricated pipe layouts and modular components.

Technical parameters

Material	Nickel-plated brass CW617N
Operating temperature	+120 °C
Nominal pressure	PN 10
Code	400494N
Brand	IVAR

The operating temperature limit of +120 °C and nominal pressure rating of PN 10 define the conditions under which the manifold can safely function. These parameters are essential for selecting the appropriate component for high-temperature systems such as underfloor heating or radiant panels. Designers should cross-check these values against system requirements to ensure compatibility and safety.

Installation and connection

The manifold features side-mounted inlets of 1" F and 5/4" F, and a top outlet of 1/2" F. The four EK outlets are sized at 3/4", with a fixed 50 mm spacing between them. During installation, the inlet connections should be aligned with the supply piping using standard F threads. The top outlet is suitable for connecting control valves or sensors. The EK outlets require compatible fittings or couplings for secure and leak-free connections. Key installation steps include verifying the orientation of the manifold, ensuring the sealing surfaces are clean, and tightening threaded connections to the recommended torque for the material. Common mistakes include incorrect alignment of the outlets, over-tightening of threaded joints, and using incompatible sealing materials. After installation, a pressure test should be conducted to confirm system integrity.

Compatibility and accessories

This manifold is designed for use with EK-type fittings and standard F-threaded pipe connections. To complete the system, installers may need to order additional components such as balancing valves, control actuators, or insulation materials. Related products include IVAR manifold kits and matching isolation valves. Ensure all components are compatible with nickel-plated brass and operate within the same temperature and pressure range.

Technical background for designers

The manifold functions as a central distribution point for heating circuits. The nickel-plated brass CW617N material offers high strength and resistance to corrosion in water-based systems. The fixed outlet spacing and connection sizes allow for predictable flow distribution and ease of system balancing. The design supports integration with both open and closed-loop systems, provided the media and operating conditions match the specified limits. Long-term efficiency depends on correct sizing, proper installation and regular inspection for wear or leaks.

Service and operation

Routine checks should include visual inspections for signs of corrosion, leakage or blockage. The nickel plating should remain intact for continued protection against oxidation. If any anomalies are detected, the manifold should be isolated and inspected further. No scheduled maintenance is required beyond these checks, as the component is designed for long-term, trouble-free operation.

Frequently asked questions

Can this manifold be used in a closed-loop radiant heating system?
Yes, the manifold is suitable for closed-loop systems operating within the specified pressure and temperature range.

What sealing material is recommended for the F-threaded connections?
NPT thread sealant or PTFE tape is appropriate for ensuring a watertight seal on the F-threaded inlets and outlets.

Is this manifold compatible with EK-type expansion joints?
Yes, the 3/4" EK outlets are designed to connect with EK-type fittings and expansion joints.

Can this manifold be used vertically or horizontally?
The manifold can be installed in either orientation, provided the inlets and outlets align with the intended flow direction and system layout.