Thread: Recycle RO 4040 Feed Pump

Hi, does anyone know what pump id need to feed my recycle RO unit. Need it to be able to supply enough water and pressure to go through 3 stage 20’’ filter then into high pressure pump then into two 4040 membranes from clean side of drum?

Or do I just use a normal small pump that can provide the water and have the high pressure pump on the inlet side of the 3 stage filter

you need a pump that can supply both the pressure and more importantly the lph the 4040 membrane requires from a static incoming pressure.
as most are to boost mains pressure tap water.
running RRO you are better off with two membranes or you get a lot more waste water, not feeding the waste from one into the second.

andy finch usually makes these up and might be able to supply what you need to convert yours to RRO if you have the correct membrane type ULP?
https://www.finchfiltration.co.uk/recycle-ro

Cheers for your reply, I already have the high pressure pump and both vessels. It’s the pump that gets the water from the drum to the pump I’m after.

Originally Posted by MrHudson

Cheers for your reply, I already have the high pressure pump and both vessels. It’s the pump that gets the water from the drum to the pump I’m after.

i just Tee'd off my return pump pipework,
when Andy Finch fits them he usually puts a Tee off the shower pump in 1" pipe with a valve to feed the booster pump. @ 24:09

Ah so you haven’t got it going through a sediment filter first when you’re setup with recycled? Thought having A 20 then a 5 micron pleated sediment filter would expand the life of the RO membranes. I see previously in the Rasta videos he hadn’t had it set up like that coming off of his return feed

Originally Posted by MrHudson

Ah so you haven’t got it going through a sediment filter first when you’re setup with recycled? Thought having A 20 then a 5 micron pleated sediment filter would expand the life of the RO membranes. I see previously in the Rasta videos he hadn’t had it set up like that coming off of his return feed

sediment filters first,
the 1" feeds the 20" sediment filters then the booster pump i think...
you should be able to see the whole set up if you watch it all

Originally Posted by davethefish1

you need a pump that can supply both the pressure and more importantly the lph the 4040 membrane requires from a static incoming pressure.
as most are to boost mains pressure tap water.
running RRO you are better off with two membranes or you get a lot more waste water, not feeding the waste from one into the second.

andy finch usually makes these up and might be able to supply what you need to convert yours to RRO if you have the correct membrane type ULP?
https://www.finchfiltration.co.uk/recycle-ro



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I already have the high pressure pump and both vessels. It’s the pump that gets the water from the drum to the pump I’m after.

Originally Posted by Feline

I have a 1 inch pipe coming from the clean side of my drum, through 2 washable sediment filters THEN the high pressure pump to the RO membrane. So it’s effectively gravity fed up to the HP pump. My pump was supplied by Absolute Koi, was whatever the one Darren was recommending at the time. It’s lasted a few years which I didn’t entirely expect it to. I have it on a timer to be on intermittently to prevent overheating or burnout- so it’s usually on for 45 mins then off for 15 mins. You can obviously set this up however you like.
The pumps Andy Finch is selling look a lot bigger and are probably more robust, but also more expensive. If mine packs in I will probably get one from Andy. He wasn’t doing this as a business when I set up my 4040 on pond recycling, but I did copy what he was doing at the time on his own pond. My set up is much more messy than his neat posh looking ones

still awaiting the promised video walk through of your RO system
a nice update on your filterhouse would be good too