THE BACKGROUND OF THIS INVENTION 0001 Traditional toilet tank fill valves are internally sealed with rubber plugs. After repeated usage, rubber plugs lose their elasticity and that causes water leakage in most toilet tanks. Instead of utilizing rubber plugs, this invention has two ceramic slices to seal the valve. It works independently without a tank ball. It will solve the water leakage problem completely. The life expectancy for this toilet tank fill valve is 50,000 flushes.

BRIEF DESCRIPTION OF THE DRAWINGS 0002 (1) valve shell 0003 (2) internal wall 0004 (3) stationary slice 0005 (4) movable slice 0006 (5) protruding platform 0007 (6) rib 0008 (7) notch 0009 (8) fan-shaped hole 0010 (9) round hole 0011 (10) axle 0012 (11) fan-shaped petal 0013 (12) rectangle notch 0014 (13) semicircle hole 0015 (14) interior tube 0016 (15) exterior tube 0017 (16) water passageway 0018 (17) water 0019 (18) tank bottom 0020 (19) cylindrical ring 0021 (20) cover 0022 (21) exterior wall 0023 (22) cylindrical hole 0024 (23) orientation slice 0025 (25) one end of the axle 0026 (26) one end of the axle 0027 (27) o-ring 0028 (28) one end of tank lever 0029 (29) one end of tank lever 0030 (30) float 0031 (31) the top of the float 0032 (32) counterweight 0033 (33) sleeve 0034 (34) one-way valve 0035 (35) refill tube

DETAILED DESCRIPTION WITH DRAWINGS 0036 1) Inside (2) a double deck cylindrical valve (1), place a pair of ceramic slices (3 & 4) along the axle. 0037 2) The diameter of the stationary slice (3) is bigger than that of the movable slice (4). 0038 3) There is a protruding platform (5) holds the stationary slice (3) and movable slice (4) together. 0039 4) Two ribs (6) are on the protruding platform (5). 0040 5) The stationary slice (3) is placed on the protruding platform (5). 0041 6) The two ribs (6) go into the two notches (7) on the stationary slice (3). Thus, the stationary slice (3) is in position. 0042 7) Several fan-shaped holes (8) are designated on the stationary slice (3) (the quantity of the holes should be 4 to 6). There is a round hole (9) in the center of the stationary slice (3). The diameter of the round hole (9) is bigger than that of the axle (10). 0043 8) Corresponding to the fan-shaped holes (8) on the stationary slice (3), there are as many as fan-shaped petals (11) on the movable slice (4). There is a rectangle notch (12) in the center of the movable slice (4). Water stops filling when fan-shaped holes (8) are covered by fan-shaped petals (11). 0044 9) There is a double layered water tube vertical to the axle on the sealed side of the valve (1). It consists of interior tube (14) and the exterior tube (15), in between there is a water passageway (16). There is an o-ring (27) and a cylindrical ring (19) on the open side of the valve (1). There are a few semicircle holes (13) on one side of the cylindrical ring (19), which is close to the cover (20). Water goes through these semicircle holes (13). 0045 10) The cover (20) and exterior wall (21) are connected with a screw nut. There is a cylindrical hole (22) in the center of the cover (20). It cooperates with axle (10), and supports the rotation of axle. There is an orientation slice (23) on the axle (10). It ensures that the rotation of the axle (10) after the cover (20) is twisted tight. 0046 11) The two ends (25 & 26) of the axle (10) are squat-shaped. One end (25) goes through the round hole (9) and ends in the rectangle notch (12). However, it does not touch the bottom of the rectangle notch (12). The other end (26) goes into cylindrical hole (22). The cover (20) pushes the cylindrical ring (19) and presses the o-ring (27) and stationary slice (3). This will seal the stationary slice (3) and the interior wall (2). 0047 12) After twisting the cover (20) to completion, one end (26) of the axle (10) comes out of the cover (20) and goes into the rectangle notch (12) on the end (28) of the tank lever. The other end (29) of the tank lever and the top of the float (31) have sliding cooperation. There is a counterweight (32) in the float (30). 0048 13) The float (30) is placed inside the sleeve (33). There is a one way valve (34) on the bottom of the sleeve (33), and it only allows water to flow out. The sleeve (33) and the external tube (15) are connected with a screw nut. 0049 14) When the tank water level goes down to the bottom of the sleeve (33), the moment of gravity produced by counterweight (32) overcomes the moment of frictional force produced by the water pressure. It forces the axle (10) to rotate and the movable slice (4) to rotate in the same direction. Therefore, the fan-shaped petals (11) and the fan-shaped holes (8) stagger, and the water goes into the tank bottom (18) through The interior tube (14), movable slice (4), fan-shaped holes (8), semicircle hole (13), and the water passageway (16). 0050 15) When the water level goes up to the tope of the sleeve (33), water will flow into the sleeve (33) and produce buoyancy. The moment of buoyancy overcomes both the moment of frictional force produced by the water pressure and the moment of gravity produced by the counterweight (32). As a result, the float (30) will move rapidly, and the axle (10) will rotate and the movable slice (4) will rotate in the opposite direction. The fan-shaped petals (11) will overlap the fan-shaped holes (8) completely. Then the water will stop flowing. The space between axle (10) and cylindrical hole (22) have anti-siphon function.

DETAILED DESCRIPTION 0051 In a double deck cylindrical valve, place a pair of ceramic slices along the axle. The smoothness and roughness of the two slices are the same as regular ceramic slices found in water faucets. One of the slices is placed according to a designed angle, so it is called the stationary slice. The other slice rotates along with the axle, so it is called the movable slice. 0052 Several fan-shaped holes are on the stationary slice for the water to exit. The axle goes through the center hole of the stationary slice. The stationary slice's diameter is bigger than that of the axle's. 0053 The movable slice is platform shaped. The diameter of the movable slice is smaller than that of the interior wall, so the movable slice will not touch the interior wall when it rotates. 0054 Corresponding to the fan-shaped holes on the stationary slice, there are several fan-shaped petals on the movable slice. There is a rectangle notch in the center of the movable slice. This notch is for the axle. When the fan-shaped holes and fan-shaped petals overlap, water will stop flowing. 0055 One side of the valve is sealed and the other side is open. On the sealed side, there is a double layered tube that the water passes through. It is vertical to the axle. The tube is both internal and external. Water enters the internal part of the tube, and flows through the passageway to the bottom of the toilet tank. On the open side of the valve, an o-ring and a cylindrical ring are placed along the interior wall. There is a cover connected with the external wall by a screw nut. A cylindrical hole is in the center of this cover. The cylindrical hole cooperates with the axle to support the axle's rotation. 0056 Both ends of the axle are squat-shaped. One end goes through the round hole in the center of the stationary slice and ends in the rectangle notch in the movable slice. The other end goes through the cylindrical hole in the cover. 0057 When the cover is twisting, the cover pushes the cylindrical ring to press the o-ring and the stationary slice. So the stationary slice is sealed with the interior wall. After its sealing, the end of the axle extends out of the cover and goes into the rectangle hole on the tank lever. 0058 There is a counterweight to the float. The float is inside a sleeve, and there is a one-way valve on the bottom of the sleeve. This valve allows water to only flow out. The sleeve is connected with the external tube with a screw nut.