8 1 2015 INT CASAFLEX district heating pipe CFL Subject to technical changes 4 320 RL return VL flow bottom VL flow right Y branch pipe Type G straight A Note The flow VL in UNO pipes is always on the right in the direction of flow The flow VL in DUO pipes it is always at the bottom in the direction of flow Carrier pipe welded steel pipe DIN EN 253 Heat insulation PUR hard foam Casing pipe PE HD Insulation thickness N standard Y branch pipes are employed to provide a transition from conventionally laid piping using two single pipes CASAFLEX UNO to the space saving PREMANT DUO format The upper pipe preferably the return pipe runs straight ahead through the Y branch pipe while the lower pipe is angled at 90 In the Type G pipe the double pipe and the single pipe are axially parallel Mounting plates are fixed to the side of the double pipe connection joint Construction variants Two different construction variants of the Y branch pipe Type G are available The type required should be given when ordering The arrows in the sketch show the flow direction of the feed confluence separation a L2 L1 ØD ØC A Ø C A 2 x single Ø D steel pipe mm mm mm mm 125 45 9 26 9 x 2 6 90 140 52 7 33 7 x 2 6 90 160 61 4 42 4 x 2 6 110 160 67 3 48 3 x 2 6 110 DN Diameter Installation Junction Distance length da L1 L2 a mm mm mm mm 20 26 9 1000 450 250 25 33 7 1000 460 250 32 42 4 1000 480 300 40 48 3 1200 480 300 A reducing socket must be used on the side with the single pipe to connect the straight through pipe Not available in Switzerland free pipe end 200 mm measured from the middle of the branch line CASAFLEX UNO

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