Series 651mHNK

Safety valves with diaphragm made of gunmetal, all-metal construction angle type with threaded connections

Datasheet

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Good to know Data & Facts

Valve size

DN 15 to DN 50
1/2" to 2"

Pressure

2.5 bar and 3 bar

Temperature

-10 °C to 120 °C

Product design

angle-type

Material

Gunmetal

Nominal width

DN 15 to DN 50
1/2" to 2"

Medium

Hot water

Temperature in °C

-10 °C to 120 °C

Pressure in bar

2.5 bar and 3 bar

Our safety valve is specially designed to effectively protect closed water heating systems for drinking and process water. It complies with the strict requirements of TRD 721, DIN 4753 and DIN 1988 and is suitable for use at temperatures up to a maximum of 95°C.

The safety valve is installed in the cold water inlet of the water heater in accordance with DIN 1988. This precise positioning guarantees optimum protection and performance by ensuring reliable pressure relief in the system, thus increasing the safety and efficiency of the system under all operating conditions.

connection types

Internal pipe thread

CHP units (combined heat and power plants)

For safeguarding closed, thermostatically protected water heating systems with flow temperatures up to 120°C for all static heights or nominal outputs above 350 kW according to TRD 721, DIN 4751 and DIN EN 12828.

In the event of failure of the thermostatic control and limiting devices, the safety valve must blow off the entire heating output of the boiler in the form of hot water and steam. Due to the all-metal design, these safety valves can also be used at high ambient or radiation temperatures.

Safety valves are permanently set and sealed at the factory.