Thermostatic double control valve - corner, 3/8"

Product detailed description

This thermostatic double control valve is commonly used in residential and commercial heating systems to regulate water flow based on temperature changes. Installers often encounter it in central heating circuits where precise flow adjustment is required. Its compact design makes it ideal for tight spaces such as boiler rooms, underfloor heating manifolds or wall-mounted radiator circuits. The valve responds automatically to variations in fluid temperature, ensuring stable and efficient heat distribution.

The corner configuration allows for space-efficient routing of pipes and is particularly useful when connecting supply lines at right angles. Due to its direct-acting design, it does not require external power sources or complex controls, making it suitable for both traditional and modern heating installations. The valve is frequently used alongside standard steel pipes and fittings, requiring no special tools or conditions during installation.

Technical parameters

The nominal pressure of PN 10 means the valve is designed for low-pressure applications typical of heating systems. The maximum operating temperature of +120 °C ensures compatibility with hot water circulation. The material choice—nickel-plated brass CW617N—provides corrosion resistance and long-term stability in wet environments. These parameters help determine correct valve sizing and suitability for specific circuits.

Installation and connection

Installation involves aligning the valve in the desired orientation (corner style) and securing it using standard steel pipe connections. The head thread size is M 30 x 1.5, which must be compatible with the actuator or controller being used. Before tightening, ensure the sealing surfaces are clean and free of debris to prevent leaks. Common mistakes include misalignment of the valve body or over-tightening the connections, which can damage the internal components or lead to leakage. Always verify that the flow direction matches the marking on the valve body.

Compatibility and accessories

This valve is intended for use with standard steel piping systems and requires compatible fittings for secure connection. The head thread allows for the attachment of thermostatic actuators or controllers for automated regulation. For proper system operation, ensure that the selected accessories are rated for the same pressure and temperature range. No additional products are listed in the database for this model.

Technical background for designers

The valve operates via a built-in bimetallic or wax thermostat that expands or contracts in response to temperature changes, adjusting the flow accordingly. The nickel-plated brass CW617N body offers high durability and resistance to thermal cycling, making it suitable for long-term use in heating circuits. Integration into the system requires careful calculation of flow rates and pressure drops to ensure optimal performance. The absence of moving parts susceptible to wear increases the reliability of the system over time. Efficiency is further supported by the precise Kv value adjustment, allowing for fine-tuning of the flow characteristics.

Service and operation

Periodic visual inspections are recommended to check for signs of wear, corrosion or leakage around the connections. Clean the exterior surface regularly to remove dirt or scale that could interfere with operation. No scheduled service intervals are specified in the brief. In case of malfunction, disassemble carefully following standard procedures and inspect internal components for blockage or damage. Replace if necessary according to manufacturer guidelines.

Frequently asked questions

Can this valve be connected to copper or plastic pipes?
No, it is specifically designed for steel pipe connections. Use appropriate adapters if mixed piping systems are required.

Is it possible to adjust the flow manually after installation?
Yes, the Kv value can be pre-set to match the required flow rate for the circuit.

What should I do if the valve shows uneven temperature response?
Check for blockages in the inlet or outlet ports and ensure that the system is free from air pockets. If the issue persists, consider replacement.

Can this valve be used in chilled water systems?
It is not designed for chilled water applications. Refer to the manufacturer’s specifications for suitable alternatives.