[G & M]

What type of pump do those of you who boost their R/O  recommend

[M & C Window Cleaning]

I use an old Surflo pump with a 12v supply and a pwm controller set to a low setting to govern the volume as 5lpm is way to high.  first time I tried it it blew through all the seals on the prefilters.  It's worked for me now for several years though the pump is now showing some signs of tyring out.

[martinw]

It would help to know what type of ro you have?
350gpd would use small 12v pump ( those are not designed to be used for long periods)
4021 or 4040 240v ones like from  anglian pumps, machine mart, or most expensive lafert

[nathankaye]

I use a diaghram pump set to 75psi which i use constant between 12 n 24hrs at a go when using a 450 gpd RO unit.

Done so for 2 yrs n not burnt the house down nor blown up the RO.....so i guess its ok to do 

[M & C Window Cleaning]

I use a diaghram pump set to 75psi which i use constant between 12 n 24hrs at a go when using a 450 gpd RO unit.

Done so for 2 yrs n not burnt the house down nor blown up the RO.....so i guess its ok to do 

As a matter of interest Nathan, what pump do you use?  My Surflo is a monster for my little 300gpd RO.  As i said above, I have to run it real slow, but it works.

[nathankaye]

I use a diaghram pump set to 75psi which i use constant between 12 n 24hrs at a go when using a 450 gpd RO unit.

Done so for 2 yrs n not burnt the house down nor blown up the RO.....so i guess its ok to do 

As a matter of interest Nathan, what pump do you use?  My Surflo is a monster for my little 300gpd RO.  As i said above, I have to run it real slow, but it works.

https://www.ebay.co.uk/sch/sis.html?_nkw=Reverse+Osmosis+RO+Unit+Booster+Pump+With+Transformer+and+Fittings+50%2F75%2F100gpd&_id=271391077970&&_trksid=p2057872.m2749.l2658

[M & C Window Cleaning]

Thanks Nathan.  My setup won't last forever so I've got to figure out what I'm going to do when it gives up.  I'll probably go for a purpose built unit like that

[G & M]

Thanks guys.