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SG150D-3/4AA

SG150D-3/4AA

Safety groups of this type are used to protect pressurised water heaters according to the requirements of DIN 4753-1, EN 806-2 and DIN EN 1488. They are compact appliances...

Product Description

Safety groups of this type are used to protect pressurised water heaters according to the requirements of DIN 4753-1, EN 806-2 and DIN EN 1488. They are compact appliances which incorporate all the necessary safety devices such as check valve, shut-off valve, test point, diaphragm type safety valve and pressure reducing 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. In addition, a balanced seat pressure reducing valve is fitted on the inlet to control the supply pressure to that required for the system.

Technical Properties

Approvals
  • DVGW
Media

Drinking Water

DN size 20 mm
Set pressure 6 bar
Port connection external threads
Port diameter 3/4 inch
Outlet pressure 1,5 ... 6 bar
Max. media temperature 40 oC
Body material brass
Spring bonnet material synthetic material
Transparant strainer chamber Yes
Setpoint scale Yes
Balanced seat design Yes
Additional Descriptions
  • Tested according DIN EN 1488
  • Fully approved for noise level protection to class 1
  • Meets UBA regulations for drinking water
  • Pressure reducing valve with inlet pressure balancing - inlet pressure fluctuation does not influence the outlet pressure
  • With insulation shell
  • Replacement insert makes servicing simple
  • Easy venting
  • Standardised discharge connection
  • for hot water tanks up to 200 liter


Mounting position horizontal or vertical
Maximum inlet pressure 16 bar
Minimum pressure drop 1,5 bar