... oil flow switch is mainly used to monitor and control the flow of the medium in pipes.FSF series oil flow ... flow switch has lots of advantage, such as simple usage, small bulk, light weight, sensitive and reliable action, and etc.Technical parameterMax. ... : 1AAvailable medium: R134a, R22, R407C, R404A/R507, oil and mixture of oil and refrigerant. Type dataModelConnection size(inch)Flow rate range(L ...