RO/DI booster pump question

[m0nk3y69d]

Hey everyone I just got my aqua fx booster pump for my BRS 6stage 75GPD RO/DI and I have it hooked up on my supply line and when its on its pushing over 100 psi into the membrane and I have ben told not to run it over 100 psi and I was wondering how I can reduce the pressure into the membrane

 

[urbaneks]

There is a set screw on the head of the pump. You can turn that screw to adjust the pressure.

 

[m0nk3y69d]

o ok in all of the videos I have watched and stuff I have read not one said anything about that lol

 

[AZDesertRat]

I have run my Aquatec 8800 at 100 psi for 8 years with zero problems. Membranes love pressure and the higher it is the better it performs. The issue is housings and fittings on many eBay quality systems probably are not UPC code rated and may fail under pressure or surge. You shouldn't have a problem though as BRS uses name brand components.

 

[m0nk3y69d]

I have it running now at 90psi I think I need to get a better pressure gage though because the needle is bouncing like crazy either that or it's the pump is making it bounce like because the pressure gage is right after the pump and the line vibrates a little and I moved the pump to right before the membrane so the water has to go through my sediment and carbon filters first

 

[AZDesertRat]

With a booster pump you need a liquid filled pressure gauge. The liquid dampens the pulsations from the pump.

 

[m0nk3y69d]

That's what I thought I will have to order one and I have to say I am loving the increased production

 

[AZDesertRat]

Much better than the increased production is the improved rejection rate. Your DI will last many times longer and pay for the pump in no time.

 

[m0nk3y69d]

I can see that already

 

[m0nk3y69d]

Is it normal for the pressure to bounce around still

 

[AZDesertRat]

A liquid filled gauge may pulse a bit but the needle isn't going to bounce around and peg until it twists off.
RO booster pumps are usually diaphragm style pumps that pulse up and down as they pump.