http://www.thitco.com/piping-product/valve/Control Valves. Angle Float Valve Angle Float Valve is applicable to the automatic water supply system of tanks and can also be used as the circulating water supply control of atmospheric boiler. It is controlled by hydraulic principle, with strong structure and reliable operation with water hammer free. The model is light weight, small volume, easy installation and maintenance, etc. SizeDN50-DN400 (2"-16" ClassPN10/PN16/PN25 Design StandardEN1074-5 Face to FaceEN558 End FlangeBS4504/DIN2532/DIN2533/DIN2534/ISO7005-2/EN1092-2 TESTEN12266/ISO5208 Plunger Valve Plunger Val