Manifold for underfloor heating FS3-3 Main Material: 304 stainless steel; 2-12 loops optional, 1" main bars and 3/4" outlets; Equipped with handwheels for adjusting flow manually; automatic drain tap, end cap and drainage valve ; a pair of brackets; straight valves(233,234) with thermometer, angle valves(235,236) with thermometer, strainer valves(237,238) with thermometer optional