COMFORT Safety Group No. 25 DN 20 A25 10 bar 24.2 LF

The safety group 25 DN 20 A25 10 bar Lead Free provides optimal protection against overpressure in closed domestic hot water tanks (DHW), in accordance with DIN 1988 and DIN 4753, Part 1. It meets the sound insulation requirements of DIN 4109 (sound insulation in building construction) class 1 and contains in compact form all components prescribed by DIN 1988 for the equipping of DHW tanks. The safety valve protects the downstream DHW tank, and the backflow preventer prevents the backflow of heated potable water. In addition, a pressure reducer is pre-installed to regulate the required system pressure. The safety group 25 DN 20 A25 consists of a pressure reducer, double shut-off valve, backflow preventer with test device, pressure gauge connection and diaphragm safety valve, as well as an extendable discharge funnel. The housing is made of lead-free brass, and the valve cap is made of fiberglass-reinforced plastic. The easily replaceable diaphragm safety valve with wear-resistant stainless steel seat can be rotated 360 degrees via a screw connection to adapt to different installation conditions. Screw connections with R ¾. Technical data: Inlet pressure: 10 bar according to DIN EN 1488 Operating pressure: max. 80% of the safety valve's set pressure Operating temperature: max. 30 °C inlet temperature Pressure reducer setting range: 1.5 - 10 bar (factory setting 4 bar) Max. nominal DHW tank capacity: 1,000 liters Max. DHW tank heating output: 150 kW Set pressure: Factory setting: 10 bar Medium: Potable water Installation position: any Flow rate: 2.3 m³/h at ∆p 1.1 bar