Three-way check valve

types of safety valves

1. Fuse coupling type of brass - valve on both sides comprises threading the inlet is provided with a special gasket of ethylene-propylene rubber, is then placed a spring acting on the stem is recessed at a certain pressure in the pipe, and therebyopens the passage.Because of its straightforward design safety valve is very affordable, while having excellent durability.

1. mechanisms that collapse - to them usually installed circulating pumps;consist of a brass housing, heat-resistant plastic rod drive, the flow of water pressure on that, then there is compression of the spring made of stainless steel, carrying out the valve opening.Such valves can withstand up to 120 degrees, and effectively cope with its function
2. safety relief valve mounted on the same storage type water heaters.The operating principle of this device is similar to the previous version differs only in the fact that the supposed drain water, carries offset lever, the shifting rod.For safe operation of electric boilers relief valve set is vital.

Check valves

return valve - used most often in the sewer network to prevent excessive pressure, which creates a reverse flow.Typically, these valves are effective in a sharp increase in rainfall - floods, storms, melting snow, as well as in contact with soil water in municipal drains.

This fixture operates as follows - butterfly valve under the influence of the flow of matter allows effluents to pass along it, and when the pressure is reduced to a barrier, pass the water stops, thereby eliminating the motion of matter in the opposite direction.The most common non-return valve in addition to the sewage system is mounted on the heating systems of industrial facilities, as well as in the central boiler type.

three-way valve

way valve mounted on heating networks, its design, as well as the features of several different from previous arrangements.The heating circuits, such devices are installed to reduce heat carrier temperature in heating networks with the appropriate temperature conditions.Such a mixing unit is controlled either manually or fully automated - is equipped with servo drive.

three-way valve inlet structure consists of two parts and openings for discharging, in which the liquid supply is controlled by valves.Depending on the type of shared these cranes:

• Ball
• Rod

To ensure the necessary operating temperature for low temperature heating systems (radiant floor), it is advisable to install such devices, which are not only play a role of the fuse and regulate supply, as wellalso can reduce the flow temperature by mixing it with cooled water from the return.

To provide automatic operation of the floor heating system, to which during the operation of the human hand actually touches, is equipped with an electric three-way valve control mechanism - servo and a heated room - thermostat.Note that the installation of this device set is expensive, the efficiency of which, however, it is corresponds to its value.