Thermostatic valve RA-N 15 straight, with preset setting 013G3904

Thermostatic valve RA-N 15 is a component designed to regulate the flow of hot water in two-pipe central heating systems. It is a simple construction that allows for effective balancing of the installation and maintaining a comfortable temperature in the rooms. This valve, manufactured by Danfoss under catalog number 013G3904, is compatible with a wide range of thermostatic heads, providing great flexibility in choosing the right solution.

Features and application

The RA-N valve is characterized primarily by a pre-setting, allowing precise adjustment of the nominal flow. This is crucial for the proper operation of the heating system, especially in installations with different types of radiators or with a large range of pipe lengths. The valve design with a 1/2 inch (DN15) internal thread ensures easy assembly and disassembly. The raw surface protection means it is ready for further processing or direct installation - although it is worth remembering to remove the red protective caps before installing the head.

This valve is primarily used in two-pipe systems, where it ensures optimal water distribution and allows for individual temperature control in individual rooms. Thanks to the possibility of cooperation with various types of heads - gas RA 2000, liquid RAW, decorative RAX and electronic living eco and living connect - it can be adapted to individual needs and user preferences. The flow at the N setting is 0.73 m³/h, and the Kvs value is 0.9 - these parameters allow for precise control of heat flow.

Construction and parameters

The RA-N valve is made of durable materials - a body made of Mo58 brass guarantees corrosion resistance and long life. Performance at low flow rates is important in systems with low heating power, which is confirmed by the Kv value of 0.09. The maximum working pressure is 10 bar, and the test pressure is 16 bar - which confirms its reliability and safety of use. The maximum medium temperature is 120°C. Additionally, the valve has a dust cover to protect against contamination during installation and does not have a clamping set. Its height is 37 mm, which facilitates installation in tight spaces.