See all products of Accessories for manifolds Insulation for distribution manifolds 662, 664 and 665 series. Pair of ball shut-off valves with O-Ring seal. Off-centre by-pass assembly with fixed setting. Off-centre by-pass kit with fixed setting. Pair of ball shut-off valves. Pair of ball shut-off valves. Reduction fitting. Return end fitting. Pair of mounting brackets for distribution manifolds 663 and 668...S1 series. Flow end fitting. Compression fitting. Automatc air vent with hygroscopic cap. Screw plug with nut, for distribution manifold outlets. DARCAL, Self-adjustable diameter fitting for single and multilayer plastic pipes. Push-fit thermometer for panel piping.