Product catalog Product catalog - Unicom

Safety Groups
Safety Groups
Safety group with interchangeable safety valve insert, SG150
Safety groups of this type are used to protect pressurised water heaters according to the requirements
of DIN 4753, Part 1, DIN 1988 and DIN EN1488.
They are compact appliances which incorporate all the necessary safety devices such as check valve,
shutoff valve, test point and diaphragm type safety valve in one unit. The safety valve protects the
downstream cylinder, pressure vessel etc. by automatically opening when excess pressure occurs.
The check valve prevents back pressure, backflow and back syphonage of water from the hot water
unit.
Approvals DVGW-approval requested
Media Water
Body material brass, dezincification resistant
Max. media temperature 40 o C
Additional description For closed hot water storage units up to 200 litres according to DIN
4753 Part 1 and DIN 1988. Tested to TRD 721 for 1.0 to 10.0 bar
pressure range
Fully approved for noise level protection to class 1
Replacement insert tested to TRD 721
Easy venting
Meets KTW recommendations for potable water
With threaded male connections, set pressure 6,0 bar
Port connection type Port diameter DN size Set pressure Type
inch mm bar
external threads 1/2 15 6 SG150-1/2AA
external threads 3/4 20 6 SG150-3/4AA
With threaded male connections, set pressure 8,0 bar
Port connection type Port diameter DN size Set pressure Type
inch mm bar
external threads 1/2 15 8 SG150-1/2AB
external threads 3/4 20 8 SG150-3/4AB
With threaded male connections, set pressure 10,0 bar
Port connection type Port diameter DN size Set pressure Type
inch mm bar
external threads 1/2 15 10 SG150-1/2AC
external threads 3/4 20 10 SG150-3/4AC
Without fittings, set pressure 6.0 bar
Port connection type Port diameter DN size Set pressure Type
inch mm bar
– – 15 6 SG150-1/2EA
– – 20 6 SG150-3/4EA
Without fittings, set pressure 8.0 bar
Port connection type Port diameter DN size Set pressure Type
inch mm bar
– – 15 8 SG150-1/2EB
– – 20 8 SG150-3/4EB
Without fittings, set pressure 10.0 bar
Port connection type Port diameter DN size Set pressure Type
inch mm bar
– – 15 10 SG150-1/2EC
– – 20 10 SG150-3/4EC
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