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NK300S-1/2AZ

NK300S-1/2AZ

The refilling combination serves filling and refilling of closed heating systems according to DIN EN 12828:2014-07. It can be connected in accordance with EN 1717:2000...

Product Description

The refilling combination serves filling and refilling of closed heating systems according to DIN EN 12828:2014-07. It can be connected in accordance with EN 1717:2000 permanently with the drinking water supply. The refilling combination combines a BA type backflow preventer, pressure reducing valve and two ball valves in one appliance. The unit consists of all needed devices for refilling a heating installation according to conforming standards are contained.

Technical Properties

Approvals DVGW
Media

Drinking water

Port connection external threads
Mounting position horizontal
Outlet pressure 1,5 ... 4 bar
Max. media temperature 65 oC
Materials

Dezincification resistant brass housing, complete backflow preventer with discharge connection, valve cartridge and valve insert in high-grade synthetic material, fibre-reinforced EPDM diaphragm, NBR and EPDM seals, spring steel adjustment spring, stainless steel fine filter mesh.

Filter mesh 25 micron
Liquid category (EN1717) class 4
Inlet pressure range 2 ... 10 bar
Preset Outlet Pressure 1,5 bar
Additional description
  • Permanent connection with the drinking water supply in accordance with EN 1717 by hose line or piping is possible
  • Optimal protection of the drinking water supply system
  • Pressure reducing valve with inlet pressure balancing - inlet pressure fluctuation does not influence the outlet pressure
  • Outlet pressure adjustable and directly visible on the pressure gauge
  • Low maintenance effort - cartridge insert and valve insert are completely replaceable
  • Meets KTW/ W270 regulations for drinking water