Repair of toilet cistern

Thanks to the float mechanisms, the tank is automatically filled with water. For example, a toilet bowl, storage tank, etc. Consider the types of float valves, as well as ways to identify and troubleshoot.

Types of float valves

Depending on the worker The valve body is divided into membrane and plunger (with the bottom or top location). The membrane valve consists of a threaded tube, the water enters the tank. Control over the flow of water into the system is carried out membrane.
 Repairing the toilet bowl
It locks the outlet through the lever and the float. The float may also not have a lever, and move along the body guides of the drain tube. This design reduces the area of ​​operation of the valve and is mounted in small containers. For example,in the toilet cisterns. The plunger locking mechanism consists of an inch-threaded pipe from one edge, and the other has a small hole and a hollow cylinder along which the plunger moves (a piston with the end face of the seal). The piston moves in the direction of opening or closing through a metal, plastic lever and a float.
 Repair the toilet cistern
Compared with diaphragm valves, plunger valves are easier to repair and maintain because of for the design of sealing rubber. Algorithm to identify and eliminate malfunction of the float device The first sign of a malfunction of the valve is a constant flow of water into the toilet or and pouring it out of the tank. It may have an obvious (easy to see) or hidden (difficult to identify) character. To determine the location of a leak, you must open the top cover with a full tank and examine the mechanisms of the tank. When water leaks from the float switch device, you should: 1. Shut off the water supply and lower the level below the valve mounting hole.Fluid can be drained using a rubber hose and a capillary effect. In the toilet cistern, simply press the button or the water release lever. 2. Unscrew the water supply hose, the valve pressure nut and remove it from the tank. 3. In valves with a lever, to remove the sealing body, it is necessary to remove the thrust, which is fastened by bolting or cotter pin. If the float moves in the guides - unfasten the latch from the float rod. 4. To dismantle the diaphragm, it is necessary to remove the support, and in the plunger mechanism - the rod. 5. Investigate the condition of the rubber and the outlet. In the presence of dirt - clean. Defective parts should be replaced.
 Repair of toilet cistern
6. Assemble and install the valve in reverse order. 7. Check the operation and tightness of the device. Reducing the noise of water when filling the tank To reduce noise when filling the tank with water, you can use a silencer. It is made of silicone or PVC tube. It should be 2 cm less than the height from the valve to the bottom of the tank, with the same diameter as the valve's outlet.Noise reduction occurs as a result of fluid entering the water gate. Also, noise can be reduced by reducing the pressure of water supplied to the tank (the rate of water hammer decreases).

Selection of the float valve

Valve for the tank is selected depending on the pressure of the fluid in the water supply system. The mechanism for low pressure is used up to 1 bar, 1 - 3 bar - medium pressure and from 3 bar - high. With the wrong choice, a long or excessively fast filling of the tank occurs, which is accompanied by increased noise.


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