NK300S-1/2A Standard version with 1/2 in threaded connections

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.

• 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