... of the 50000LPH One grade ro water treatment/purification system1. Introduction of the ro purificationThis is the RO system for producing drinking. ... the filter should be backflushed every week.3.4The RO device.The RO device removes the hydronium, organic substance, colloid, ... pressure pump, the middle tank, the pressure vessel, the RO membrane module, the pressure gauge, the flowmeter, the ...