Features: Not only can our Fill Valve be constituted a Combination with our Flush Valve, but also can be used as an independent part. Advantages of our products: 1, Good compatibility with various toilet tank: The tank fitting is combined by three parts: Fill Valve, Flush Valve and Switch Controller. They are mutually connected by the flexible hoses, so the installation will never be affected by size or shape of toilet tank and position of switch button. 2, Full function: The water volume can be adjusted according to different needs of toilets (include fill volume, flush volume, supplemental volume and siphonic-proof requirement etc.), it also can be set to flush one time or full/half flushing. So the best rinse result and most water-saving can be performed. 3, Quantitative fill/flush volume: Fill and flush volume are NOT affected by the water supply pressure, to be sure the flushing result each time. 4, The clicking control button: The button is based on the principle of hydraulic pressure, it is easy and light to operate and has excellent reliability. 5, The airproof reliability of any parts: To pressurize by both using spring and hydraulic pressure, to ensure without any leakage. 6, Durable life time, low breakdown rate: Based on the advanced patent technology of hydraulic control system and impurity auto-clear, the products have excellent reliability and no need to rinse the filter. 7, Easy to install: There are NO need to use any auxiliary tools, to fit it up just by hands then without any leakage, to operate conveniently. 8, High flush flow rate: ＞ 2.1 L/S. 9, High fill flow rate and low noise: ＜83 second at 0.05MPa, 9 Liter; ＜48 dB. 10, Each technical index of our product exceed the standard of JC707-1997 LOW POSITION TANK FITTINGS OF TOILET.