Clamp drain valve 1/4" black compression nut, for connecting reverse osmosis systems drain pipe to the sink siphon in a solid and safe way. Application: Household reverse osmosis drain line Connection type: Jaco 1/4" Operating temperature (max/min): 40-2°C Diameter siphon tube (max): 40 mm Dimensions: Width: 74mm. - Height: 32mm. - Length: 85mm.