Safety valve 2115 G 1/2 inch 10bar brass 2115.15.202

Pressure protection in DHW systems

Diaphragm safety valves type 2115N are a key element protecting closed domestic water heaters from damage caused by excessive pressure rise. The device is designed to automatically release excess fluid when the system pressure exceeds the set threshold value. For the model with catalog number 2115.15.202, the opening pressure setting is 10 bar, making it suitable for installations operating at higher working pressures.

A key difference compared to standard valve versions is the use of a replaceable stainless steel seat. This solution not only increases corrosion resistance but, above all, significantly extends the device's service life in difficult water conditions. For the installer, this means the possibility of servicing without having to replace the entire valve – it is sufficient to remove the worn seat using a dedicated service key and install a new one. For the end user, this translates into fewer failures and stable operation of the heating system for many years, even with frequent cyclic opening of the valve, which is a natural phenomenon in some DHW installations.

Application and operating conditions

The valve is suitable for a wide range of applications, covering not only typical water installations but also systems filled with other non-sticky liquids or water-glycol mixtures (up to a maximum concentration of 50%). The device is designed for operation with a medium temperature not exceeding 110°C, meeting the needs of most domestic and industrial heating systems and domestic hot water systems.

During installation, several important issues affecting the proper operation of the system must be remembered. The valve must be mounted exclusively vertically with the inlet at the bottom, ensuring proper response of the mechanism to pressure rise. Connection is made using thread G 1/2" (DN 15), compatible with standard outlets on water heaters. The brass body guarantees construction durability, while the obtained PZH certificates and UDT type test certificate confirm the device's safety and compliance with applicable legal standards.

Various versions of this valve are available, adapted to specific installation needs – from G 1/2" to G 3/4" diameters, with opening pressure settings of 6, 8, or 10 bar respectively. The choice of a specific model depends on the tank volume and the heat exchanger power, and precise selection guidelines are provided in the manufacturer's technical documentation. Thanks to the diaphragm construction and precise spring adjustment, the valve responds quickly to pressure surges, minimizing the risk of tank rupture or damage to other installation components. This is a universal solution – equally effective in a modern single-family house as in larger public utility buildings equipped with central domestic hot water heating.