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[Article Title]What is an auto shut-off valve and flow restrictor and why do I need them on my RO?
[Artical Suimmary] ro installation
[Article Contect]

What is an auto shut-off valve and flow restrictor and why do I need them on my RO?

The auto shut-off valve and flow restrictor combination regulates the flow and use of water in the RO system, serving three very important functions - it holds the water in the RO membrane so that it is purified fully, it reduces water waste, and it prolongs system life. Due to our advanced flow restriction configuration only 3.5 gallons of water are made brine per gallon of drinking water, compared to 8-9 gallons of water made brine per gallon of drinking water on competitors RO systems. The automatic shutoff consists of 2 diaphragms and a plunger. The plunger moves up or down in the housing based upon diaphragm pressures.
The lower diaphragm pushes the plunger up allowing feed water to flow through the inlet/outlet port until the storage area pressure exceeds one half the inlet pressure. At this point, the storage area pressure on the upper diaphragm is great enough to push the plunger down stopping the flow of feed water. Flow will not start again until the storage area pressure drops because of water withdrawal at the faucet.
Furthermore without the auto shut-off valve, water would rush through the system wearing down components and sending purified water down the only open valve ? the drain ? after the reserve tank has been filled. This is one reason why most competitors rate their membrane life to only 1-2 years. With the Tap Master you can reasonably expect your membrane to last 4-5 years.

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