Modern water supply systems require the installation of a pressure reducer. This device will protect expensive heating and plumbing systems from dangerous pressure drops in water supply systems.
Water pressure reducer - a device that allows you to limit the pressure in the pipes. It helps to maintain the integrity of both the pipes themselves and all related equipment: cranes, mixers,
flexible hoses. Thanks to the gearbox, it is possible to prevent emergency situations associated with breaks and leaks of the system that arise as a result of water hammer. In addition, the water
pressure reducer serves as a regulator and helps to reduce its consumption, which is important in conditions of general economic instability. The installation of this device is especially necessary in the case when the maximum pressure in the supply network exceeds the permissible working set for pipes, fittings and appliances of household appliances.
Water pressure reducers have an extensive classification, which is not so easy to understand. The main thing that should be noted: they, like all shut-off valves of the water supply, are designed for certain operating conditions, which are characterized by an acceptable range of temperatures, pressure, etc., therefore, when installing them, the technical requirements must be observed.
According to the method of maintaining the set parameters
, water
pressure reducers are divided into two types:
1. The regulator, working on the dynamics. It is used if it is necessary to maintain pressure with a constant continuous flow of water in the pipelines.
2. Static controller. It is applicable for those cases when the water intake is inconsistent and uneven, for example, in houses, apartments, some types of equipment. This device always maintains a predetermined pressure.
The reducer sets the pressure in the water supply automatically; it does not require electrical equipment to operate. A water pressure regulator is a reducing valve, the action of which is due to the load-weighting agent or spring, or directly due to the pressure of the water. According to the principle of the device, regulators of indirect and direct action are distinguished. In turn, the latter can be lever or spring.
Water pressure reducer - principle of operation
In spring valves, pressure reduction occurs due to equalization of forces. The force of the adjustment spring is counteracted by the force of the diaphragm. When the force received by the diaphragm from the inlet pressure decreases due to tapping, the higher spring force causes the valve to open. In this case, the output pressure increases until the spring elastic force balances the diaphragm force. Since the inlet pressure cannot affect the opening / closing of the valve, its fluctuations do not affect the outlet pressure in any way. As a result of the operation of the regulator, the inlet pressure is balanced.
Gearboxes are installed on the highway with hot and cold water. It is preferable to use a horizontal pipe section for this purpose, but if necessary, installation on a vertical riser is allowed. In order for the water pressure reducer to work flawlessly, it is required to install a filter at the inlet to it, which should be cleaned periodically, at the same time as cleaning the gearbox seat. Regulators do not require other care, and worn parts (membrane, mesh) can be easily replaced without dismantling.