thanks! they do have some good prices!!!
i am worried about my RO/DI unit..it is putting out 5g every 2 hours..so for 24 hrs, it is only putting out 60g..it is supposed to put out 110gpd..the filters are amost brand new...i replaced all the filters about 2 months ago..i also replaced the sediment filter 2 days ago....does this sound strange???
What is The Flow Restrictor For?
First, to create pressure throughout the membrane element.
Second and more importantly, to maintain a desired ratio of reject flow (to drain) and permeate (product) flow.
Residential membranes require a reject flow rate of at least 3-6 times the product flow rate. Normally this ratio is maintained at approximately 3:1 to 5:1. Therefore, a membrane rated at 10 gallons per 24 hour day should be sized with a flow restrictor of at least 50 gallons per day.
Under-sizing the flow restrictor in order to run the system at higher recoveries results in premature scaling of the membrane, and shorter membrane life, and/or an increase in higher-TDS product water. Additionally, scaling of the flow restrictor will alter the flow rate to drain, and decrease the ratio, causing the above problems. To avoid this, flow restrictors should be changed regularly.
The flow restrictor should be changed every time the membrane is changed.
What is The Flow Restrictor For?
Flow restrictors are rated by a flow rate expressed as milliliters/minute (ml/min) A standard flow restrictor that closely meets the calculated brine flow should be selected. The poorer the feed water quality, the higher the reject to product ratio should be. Lowering the ratio below the recommended level will result in faster fouling of the membrane and shorter membrane life. In addition to this, when designing a system, check to ensure that the desired reject to product ratio can be met at the operating pressure the system will be running at.
where does the flow restricter go??????
i talked to the guys at Filterdirect...this is where i got my unit.. they weren't helpful and acted like they had better things to do..i hung up and called Filterguys.biz...i will be giving all of my RO/DI business to them...the guy talked to me for about 15-20min...he was very polite and helpful..he told me what the problems could be with my unit outflow...VERY NICE GUYS!!!!!!!!!!!
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