*This item is Side Fill Valve,fill water from side. *.Different water pressure design and effective shut-off water structure assure effecient water shut-off and steady water flow under low water pressure. *.Easy to install and easy to adjust the water level and total height as your requests. *.Made of POM plastic,high strength,long duration,anti-erosion. *.More humanistic design. *.2 kinds of pipe screw connection for selection - G1/2 and G 15/16. *.Suitable for any toilet tank. For more information ,please kindly contact me .Sincerely hope we can establish business relationship soon and supply the best service to you and your company.