4-Way Reversing Valve Installation and Application
If the valve is installed using the standard soldering process (copper/copper solder joint with hard solder, such as Silfos 15), please note the following: Real copper stubs, which are usually present on valves of this type, are very suitable for soldering to copper lines.
Due to the excellent heat conduction properties of copper and the close t of the slider mechanism parts, it is extremely important to prevent the valve body heating during the soldering process as much as possible. For this purpose, a wet cloth should always be
wrapped around the valve to cool it during the soldering process. With this hurdle overcome, the 4-Way Reversing Valve is a component that will operate reliably for the lifetime of a refrigeration system.
4-Way Reversing Valve are used to reverse the circulation in reversible refrigeration systems.
With this reversal, the evaporator becomes a condenser and the condenser becomes an evaporator.
This switchover is often used in systems such as split-unit air conditioners that are used for cooling in the summer and heating in the transitional period. In heating mode, these units operate as air-to-air heat pumps.
Another application arises from the desire for e cient defrosting. When the circulation is reversed in a reversible system, the evaporator becomes a condenser and can be defrosted by internal heating. This means that the necessary heat is provided by hot gas pumped directly through the tubing system where the frost has formed, instead of being provided by electric heaters in the evaporator module.
This yields excellent defrosting results and is practically unbeatable as regards defrosting time, energy consumption, and e ective heat transfer.