Radiator valve with presetting - straight, 1/2" x EK

Product detailed description

This straight radiator valve with presetting is commonly used in residential and commercial heating systems. It enables precise flow control and is typically installed in central heating circuits where pre-setting of flow rates is required. The valve is suitable for both new installations and system upgrades, particularly in systems using copper or plastic piping. Installers should ensure correct orientation and compatibility with existing pipe connections to avoid operational issues.

The valve’s presetting feature allows for fixed flow rates to be established during commissioning, which helps maintain balanced system performance. Its robust construction and compatibility with multiple pipe materials make it a reliable choice for a wide range of applications. The valve is designed for use in systems operating under standard thermal and hydraulic conditions.

Technical parameters

Material	nickel-plated brass CW617N
Operating temperature	+120 °C
Nominal pressure	PN 10
Weight	0.202 kg
Code	500571
Brand	IVAR

The nominal pressure rating of PN 10 indicates the valve is suitable for systems operating under normal domestic or light commercial pressure levels. The maximum operating temperature of +120°C ensures compatibility with conventional heating systems using water as the heat transfer medium. The material specification of nickel-plated brass CW617N provides resistance to corrosion and wear, making it suitable for long-term use in wet environments.

Installation and connection

The valve features a 1/2 inch male thread on one end and an EK (external key) connection on the other. The EK side is intended for connection to a thermostatic head or actuator. The threaded end connects to copper or plastic piping using compression fittings such as IVAR.TR for copper, TA for Alpex, and TP for plastic. During installation, ensure the valve is fully tightened and aligned with the pipe to prevent leakage. Check that the sealing washer is correctly seated and undamaged before final tightening. Common mistakes include incorrect orientation of the valve body and failure to match the thread type with the fitting. Always verify the direction of flow indicated on the valve body before securing it in place.

Compatibility and accessories

This valve is compatible with standard thermostatic heads and actuators that use the EK interface. For copper piping, use IVAR.TR compression fittings. For Alpex pipes, use TA fittings, and for plastic pipes, TP fittings are required. When ordering, ensure the appropriate fittings are included to match the pipe material in the installation. No additional accessories are included with the valve itself, so all fittings and tools must be sourced separately.

Technical background for designers

The valve operates by allowing a fixed flow rate to be set during commissioning, which remains constant unless manually adjusted. The nickel-plated brass body offers good mechanical strength and resistance to thermal expansion. The CW617N alloy is particularly suited for wet environments and maintains structural integrity over time. The valve integrates into the system by controlling the flow of heated water to individual radiators, contributing to even heat distribution. The efficiency of the system depends on accurate sizing of the valve and proper balancing of the overall circuit.

Service and operation

Routine visual inspections are recommended to check for signs of corrosion or leakage around the connections. No specific service intervals are defined for this model. If a leak is detected, the valve should be removed and inspected for damaged seals or worn threads. In cases where the presetting is no longer accurate, recalibration can be performed by adjusting the internal setting according to the manufacturer’s instructions. Ensure the system is depressurised before carrying out any maintenance.

Frequently asked questions

Can this valve be used with copper piping?
Yes, it can be connected to copper piping using IVAR.TR compression fittings. Ensure the fitting is correctly sized and tightened according to the manufacturer’s instructions.

Is it compatible with thermostatic heads?
Yes, the EK interface allows for the connection of standard thermostatic heads. Confirm the head is designed for use with the EK connection type before installation.

What is the maximum operating temperature?
The valve is rated for a maximum operating temperature of +120°C. It is suitable for use in conventional heating systems with water as the heat transfer medium.

Can the presetting be changed after installation?
Yes, the internal presetting can be adjusted if necessary. This requires access to the adjustment mechanism and should be done according to the manufacturer’s guidelines to ensure accuracy.