QE QUALITY flow switch specifications: rating Content: 125VA, 120-240VA, 50/60Hz, max Pressure: 10.5 Kg/Cm (150 PSI), connection: G1”, max Rate of Flow: 38.6 LPM, min Rate of Flow: 13.62 LMP, for use with tees or welded half-couplings, must not be subjected to water hammer, and if fast-closing valve is located downstream of flow switch, a suitable water hammer arrester must be used.