S129 | Temperature and pressure relief valve for solar systems

The temperature and pressure relief valve for solar systems controls and limits the temperature and pressure of the hot water in a solar domestic hot water storage tank. It prevents temperatures from exceeding 100°C. Upon reaching the set values, the valve discharges a quantity of water into the atmosphere, reducing the pressure and temperature of the storage tank. The expelled water is immediately replaced by water from the mains supply.

Technical datasheet

Instruction sheet

RoHS declaration

Codes and dimensions

Art.SizeBarCode
S1291/2M x 1/2F393S129ADAF120
S1291/2M x 1/2F693S129ADAN120
S1291/2M x 1/2F893S129ADAQ120
S1293/4M x 3/4F393S129AEAF120
S1293/4M x 3/4F693S129AEAN120
S1293/4M x 3/4F893S129AEAQ120