Water Pumps for a heat exchange system

Submitted: Tuesday, Jul 31, 2007 at 20:26

ThreadID: 48281 Views:2581 Replies:3 FollowUps:6

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Peter L

I am putting in a hot water shower into my TI Patrol and have decided upon the Helton HEU due to the limited space under the bonnet.
I now need to choose a water pump and would be grateful for any advice that you may offer. The pumps I have seen pump up to 12 lpm, but I am not sure if this is overkill as the water may not stay in the HEU long enough to heat up.
I would appreciate any helpful hints...cheers

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Reply By: Member - Roachie (SA) - Tuesday, Jul 31, 2007 at 20:37

Tuesday, Jul 31, 2007 at 20:37

Yep, I have a Shurflo 12l/p/m pump, mounted it in behind the side wing of the bullbar as I had no room in the engine bay.

If you're worried about the water pumping through the heat exchanger too quickly, you have 2 options (at least):

1). Use the control button on the shower rose to slow-down the flow rate
2). cycle the water through the system back into your bucket etc until it reaches the desired temperature. We have to do this anyway when the ambient water temp is so low on a really cold morning.

I also believe the TI Patrol has a climate control heater system and you would therefore be well advised to plum the heat exchanger in such a way as it does not rely on the cabin heater to control the water temp.

Good luck.....the Helton is a great unit.

Cheers

Roachie

AnswerID: 255257

Follow Up By: Peter L - Tuesday, Jul 31, 2007 at 20:43

Tuesday, Jul 31, 2007 at 20:43

Thanks Roachie.....where did you get the shower rose set up from ??

FollowupID: 516417

Follow Up By: Member - Roachie (SA) - Tuesday, Jul 31, 2007 at 22:35

Tuesday, Jul 31, 2007 at 22:35

Peter,

I had a Twine on my last GU Patrol and when I sold it, I took the shower unit off. The heat exchanger was deemed to be too big, so I sold it off, but kept the pump, hoses and rose etc.

So, to answer your question, it was from Twine Showers. I'm not sure whether they sell the rose individually. If you check out their website www.twine4wdshowers.com.au/default.htm you'll see the type of thing I mean with the silver button at the base of the handpiece.

Failing that, there's no reason why you couldn't use a simple in-line tap like the black ones used for garden irrigation/dripper systems etc. Then you could just turn it back a fraction at a time until you achieve the desired flow rate and you could use a non-adjustable shower rose.

Cheers

Roachie

FollowupID: 516433

Follow Up By: mattie - Wednesday, Aug 01, 2007 at 18:05

Wednesday, Aug 01, 2007 at 18:05

GLIND ALSO HAVE A FLOW CONTROLED SHOWER ROSE, IF U DON'T BUY EITHER OF THE SHOWER ROSES MENTIONED THE PROBLEM U WILL HAVE IS WHEN U SLOW THE FLOW DOWN MOST OTHER SPRAYERS OR NOZZLES WILL NOT SHOWER BUT DRIBBLE.

MATTIE

FollowupID: 516512

Reply By: Grizzle - Wednesday, Aug 01, 2007 at 16:26

Wednesday, Aug 01, 2007 at 16:26

I have a helton hot water unit in my 4.2 Diesel Patrol. i use a 4.5 L/M Shureflo pump. You can buy a cheap 12v shower from K-Mart and use the rose setup as I did.

I tried a 10 l/M pump but it was too quick. The 4.5 pump is very small and has a pressure switch so it stops when you close the shower valve.

Cheers

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AnswerID: 255355

Follow Up By: Peter L - Wednesday, Aug 01, 2007 at 19:10

Wednesday, Aug 01, 2007 at 19:10

Grizzle....thanks for the assistance...cheers....Peter

FollowupID: 516520

Follow Up By: jeffwa - Wednesday, Aug 01, 2007 at 19:16

Wednesday, Aug 01, 2007 at 19:16

I use the same shurflo for my drinking water setup and have had it for years and used it extensivly, although I don't run hot water through it I can give you a big thumbs up on the reliability. The pressure activation is awsome too. Mine was about $100 bucks from the 12 volt shop. I'd buy one again if/when it ever packs up, it's a great little bit of gear.

FollowupID: 516522

Reply By: Middle Jeff - Wednesday, Aug 01, 2007 at 20:37

Wednesday, Aug 01, 2007 at 20:37

Hi Peter
I found the most important thing with a pump is not the lpm but how far and how high it will pump. I have on of these Site Link and it may look like a monster, but it is the only one that I could find that will suck 20mts and lift it up at least 3mts. This may sound a lot but it is already 1mt up in the car and it is not a good idea to shower right on the edge of a creek. If you look at Whitworths site you will find everything you need even the stuff you did not no you needed. I have a one way valve at the end of the hose so if the lift is to big I can prime it first with a bucket. If I have the shower nozzle open all the way it is a bit cool so I slide the button a little and all is good.

Have fun

Craig

AnswerID: 255399