relief valves - a device by which the system pressure is maintained at a constant level.Otherwise referred to as excess flow valves.Unlike protective liquid or a gas therein are discharged continuously.The pressure relief valve in the system is maintained periodic withdrawal of gas or liquid.Structurally, they both devices do not differ.
Application
relief valves used in systems that require constant borrowing at a certain level of internal environment.For example, in a car, they are mounted directly next to the fuel pump or part of it design.Valve performs return excess fuel to the fuel tank than maintains a constant pressure in the system.The internal combustion engine is equipped with a cooling system, which also installed bypass valves through which the cooling of the radiator expansion tank coolant is returned.Devices are used in the circuits and the boiler, where they maintain a constant flow rate of the heat source circuit.
Benefits
relief valves have a number of advantages:
- simplicity of the device, ensuring high reliability of the design;
- not require connection of additional power supply;
- do not require maintenance;
- easily installed anywhere in the system;
- low cost.
Valves for water
Various companies offer devices that regulate the water pressure to themselves as well as behind, valves, flow control, relief, safety and air.In heating systems they are installed in the flow pipe.At the time when the pressure of water rises to the valve, it is opened and the water flow is sent through the branch pipe in the return pipe.If the pressure in the flow pipe drops to a level set by the valve, it closes.Its design allows you to change the settings of the pressure with a special wheel.Bellows stem seal needs no maintenance.Overflow valve for water distribution systems installed in the water flow.These devices offer high performance, long life and reliability.
valves in the compressor bypass valve
compressor is responsible structural element, whereby the equipment properly and without overloading works.Cost of the unit depends on its integrity, so he has time and tightly closed, have a high wear resistance, withstand high temperatures and dynamic loads.There are such types of valves for compressors:
- safety valves, which are necessary to ensure the discharge of excess pressure in those cases when it is above the permissible level.When the device is opened, releasing the air, and when the pressure is automatically closed.
- check valve, which constrains the pressure to the compressor when any stop to prevent admission of the compressed air back to the compressor.
- Unloading (bypass) valves reduce the load on the motor shaft at the time of launch.Through them, the high-pressure cylinder communicates with the external environment and resets overpressure.
