Thermostatic bypass valves

Thermoregulating relief valves are designed for temperature-controlled pressure relief in heating systems, particularly for solid fuel boilers. These valves help prevent low-temperature corrosion and tarring by maintaining a minimum operating temperature. The category includes valves with nominal pressure PN 10 and temperature ranges from 45°C to 80°C. Available models feature replaceable thermostatic inserts, allowing for adjustments without system shutdown or disassembly. Connection sizes range from 1” to 5/4” and 6/4”, with materials including DZR brass and cast iron for compatibility with different system requirements.

These valves are suitable for integration into hydronic heating systems where precise temperature management is essential for system longevity and efficiency. They are commonly used in residential and commercial heating applications involving solid fuel boilers, where thermal stratification and condensation risks must be mitigated.

How to choose

• Select the correct connection size (1”, 5/4”, or 6/4”) based on the pipe dimensions and system design.
• Choose the appropriate thermostatic setting (45°C to 80°C) to match the minimum operating temperature of the boiler or system.
• Ensure compatibility with the system material by selecting DZR brass or cast iron valves as required.
• Verify the Kv value (9 or 12) to ensure the flow capacity meets the system’s hydraulic requirements.
• Opt for models with replaceable inserts for easy maintenance and adjustments without full valve replacement.

Frequently asked questions

Can the thermostatic insert be replaced under pressure?
Yes, the design allows for changing the insert without the need for tools or system shutdown.

What is the maximum operating temperature of these valves?
The valves are rated for a maximum operating temperature of 120°C.

Are these valves suitable for cast iron boilers?
Yes, models with cast iron bodies are available for compatibility with cast iron boiler systems.