20
Special Safety Valve in RO
The safety valve is a multi-functional element which can carry out all the functions to
regulate the flow rate. So, if a safety valve is fitted in a system, it eliminates the need of
a check valve, a 4-way shut off valve as well as a flow restrictor. The flow restrictor’s
function is to regulate the flow rate.
A 4-way shut-off valve is not required as the high pressure switch gets operated at 35/40
psi at the tank and will switch off the booster pump so the waste flow gets stopped. This
avoids unnecessary wastage of water because the safety valve allows water to come out
only at 55/60 psi which will never happen as it enhances the life of the filter.
Check valves work as non-return valves, to avoid final water from entering again in the
membrane as the maximum pressure at tank is 35/40 psi, and the safety valve gets
operated 55/60 psi so the function of N.R.V. is done by the safety valve itself.
Recommended Filter
Change Schedule
FILTER
FREQUENCY
1st stage 5 micron sediment pre-filter
12 months
2nd stage GAC filter
12 months
3rd stage Carbon pre-filter
12 months
4th TFM membrane
12 months
5th stage Final carbon
12 months
