Check valves
A check valve is a device that allows fluids to cross in a single direction inside a pipeline or a conduit, for which it is important to check the correspondence between the direction of the flow in the pipeline and the direction of the arrow indicated on the valve body. The valves can be installed in any section of a refrigeration system where it is necessary to avoid the consequences from undesirable flow inversion, with respect for the operating limits and the yields.
Check valves consist of a constrained element of a guide, that thanks to the spring action is pushed against the valve base and this happens when the pressure to open the valve is not sufficient. On the other hand, when there is sufficient positive pressure, the check valve opens enabling the fluid passage.
Castel offers different types of check valves, including the hermetic valves and valves that can be disassembled.