... can be widely used in foodstuff industry, water-cooling air-condition, petroleum and petrifaction, etc.FSF series oil flow switch has ... as simple usage, small bulk, light weight, sensitive and reliable action, and etc.Technical parameterMax. ambient temperature: 80 Max. fluid ... : R134a, R22, R407C, R404A/R507, oil and mixture of oil and refrigerant. Type dataModelConnection size(inch)Flow rate range(L ...