IVAR.PV KD - for heating

The IVAR.PV KD category includes safety valves designed for heating systems. These valves are used to protect closed heating circuits from overpressure by releasing excess pressure when the set threshold is exceeded. The valves operate within a temperature range of -10°C to +120°C and are suitable for installation in central heating systems, underfloor heating, and other low-temperature heating applications. They are manufactured from CW617N brass, a corrosion-resistant alloy suitable for use with water and glycol-based heat transfer fluids.

Available models vary by nominal size (1/2" and 1"), Kv value (0.540 to 0.740), and opening pressure (0.5 to 10 bar). The valves are supplied with fixed pressure settings and must be selected according to the system’s pressure requirements. Connection types are female threaded (F) with standard thread sizes (3/4", 5/4").

How to choose

• Select the correct nominal size (1/2" or 1") based on the pipe dimensions and flow rate requirements.
• Choose the appropriate opening pressure (0.5 to 10 bar) to match the system’s maximum allowable pressure.
• Ensure compatibility with the system’s fluid type (water or glycol) and operating temperature range.
• Verify the Kv value to confirm the valve’s flow capacity meets the system’s hydraulic needs.
• Confirm the thread type (female) and size (e.g., 3/4", 5/4") for correct installation.

Frequently asked questions

Can IVAR.PV KD valves be used in glycol-based heating systems?
Yes, the CW617N brass material is compatible with glycol-based heat transfer fluids within the operating temperature range.

How is the opening pressure set on these valves?
The valves are factory-set to a specific pressure and cannot be adjusted in the field. The required pressure must be specified at the time of ordering.