[007 or what]

Anybody?

PLEASE

[windowwashers]

I'm wanting a DI in the van so i know its 000 coming out of the jets 99% of the time, so i'm still not sure what to do , do i buy 2 little ones or a big 11 ltr one?

i'm in need of a di in the van do i put it after the tank before pump,
 or after pump before hose reel?

please help

if you are having di in van where are you making your water ?

[007 or what]

At home 1000 ltr tank in shed
Thanks for getting back.

[windowwashers]

At home 1000 ltr tank in shed
Thanks for getting back.

right i need to start from the begining,

you have 1000l tank in shed, are you using ro?

[Alex Gardiner]

I'm wanting a DI in the van so i know its 000 coming out of the jets 99% of the time, so i'm still not sure what to do , do i buy 2 little ones or a big 11 ltr one?

i'm in need of a di in the van do i put it after the tank before pump,
 or after pump before hose reel?

please help

You can put the DI after the pump, before the hose reel (some put it before the pump though). I would always recommend twin DI canisters as this will prolong your resin life. If your vehicle tank TDS is fairly low (below 10ppm) then you can just use twin 700ml canisters, but these would need to be proper 1/2" fitting type so as not to restrict flow rate. The best solution would be twin larger vessels (8 litre size) as these would last a very long time, would not restrict flow rate and would make the best use of the resin.

[007 or what]

Thank you alex thats what i needed to know. 

[alanwilson]

macmac if you care to look at the label on the vessels it clearly says 10bar (147psi), now as I use 6mm microbore and a high flow rate I have had to have my varistream adjusted so that the pump doesn't cut out too soon, the pump now shuts off at 132psi which is 9bar. With running so close to the recommended max pressure the vessels can take then yes they can crack/fail over time.  Its called creep stress.

[macmac]

macmac if you care to look at the label on the vessels it clearly says 10bar (147psi), now as I use 6mm microbore and a high flow rate I have had to have my varistream adjusted so that the pump doesn't cut out too soon, the pump now shuts off at 132psi which is 9bar. With running so close to the recommended max pressure the vessels can take then yes they can crack/fail over time.  Its called creep stress.

nothing short of nonesense.

tony

[frames to panes]

Not being funny, but how do you get a 100psi pump up to 132psi?

[alanwilson]

when you turn the internal dial up on your varistream it increases the cut off pressure.

macmac don't believe me then fine but the fact remains tht the vessels are only designed to be used up to a max of 147psi and everytime I disconnect the pole it gets very close to the limit - I'd rather just be careful.  Anyway whats wrong with putting the vessel before the pump or more to the point WHY would I put it after the pump (don't know why I have a vessel in each van - already got 2 after my ro)

[macmac]

when you turn the internal dial up on your varistream it increases the cut off pressure.

macmac don't believe me then fine but the fact remains tht the vessels are only designed to be used up to a max of 147psi and everytime I disconnect the pole it gets very close to the limit - I'd rather just be careful.  Anyway whats wrong with putting the vessel before the pump or more to the point WHY would I put it after the pump (don't know why I have a vessel in each van - already got 2 after my ro)

Every time you disconnect your pole everything from the pump to end of hose is under the same pressure- pipe, connections, stop-end etc. surely, if the pressure was so great that it was of concern evrything would start popping off & bursting?
I've run 2 DI vessels for 4 years & on some big jobs taken them out of van & run them from mains, again with stop ends on hose. both vessels have been under massive pressure & never failed nor had even to be maintained in any way. A typical domestic radiator has a max working pressure of 10 bar & yes, if was subjected to such pressure for 15 years, with natural corrosion it might just fail. The concequenses of this happening though could be quite drastic ( flooded house ). What would be the worst could happen to you with a 50 quid DI vessel in the back of your van?
You worry too much
As for DI after pump, in my experience doing it this way is less likely to get air in the system from the connections on the DI's, that's all.


Tony