Control system for air conditioning system
Double regulating and commissioning valve “Hydrocontrol VTR” both ports with female thread according to EN 10226 - Double regulating and commissioning valve PN 25 (water pH value 6.5-10) (DN 65: PN 16), both ports with female thread according to EN 10226 (BS 21), not suitable for steam. Colour rings for marking of supply and return pipe (except for DN 65), oblique pattern with secured, infinitely adjustable fine presetting controllable at any time; optical display of the presetting depending on the position of the handwheel, valve body and bonnet made of bronze (Rg 5), disc and stem made of brass resistant to de-zincification (DZR), disc with PTFE seal, maintenance-free stem seal due to double O-ring, all functioning components on one level, pressure test point and fill and drain ball valve interchangeable, installation in the supply or the return pipe. DN 15 up to DN 32 DVGW tested and registered, DN 10 up to DN 50 WRAS tested and registered. DN 10 to DN 50 with type approval certificate for shipbuilding.