Go Back   TeamTalk > General MasterCraft Topics > General Discussion

Thread Tools Display Modes
Old 04-24-2016, 07:56 PM
hankster2 hankster2 is offline
TT Newbie
Join Date: Jul 2015
Boat: 1988 Prostar 190
Location: Pacific Northwest
Posts: 9
Automatic Temperature Shower Install - Cheap and Easy

I just installed a shower on my boat and wanted to share a couple pieces in case anyone is is inclined to do the same.

The previous owner of the 1987 Prostar 190 had installed a shower straight off one of the drain petcock locations on the block. As a result the only temperature available was scalding.

I decided to integrate a thermostatic mixing valve ($35 on Amazon Prime) so I could set the shower temperature I wanted and forget it. For those unfamiliar, this little device takes hot and cold water inputs and mixes via the same principles as an engine thermostat and delivers a consistent water temperature output - which can be set via a knob on top (no wires... all mechanical). They're often used in sinks and showers to set the max fixture output temp to prevent scalding (like when a hot water heater is set too high or when someone flushes a toilet while you're in the shower).

Thermostatic Mixing Valve

The other thing (in case anyone is in my same situation) is I've found "Dorman 627-006 Radiator Hose Connector" ($10 Amazon Prime) is perfect for Tee-ing in the cold water between the raw water pump and engine water pump. The output can be stepped from 3/4" heater hose immediately down to something smaller like 3/8" or 1/2" if you want an easier to run diameter.

Dorman Tee

Today was our first day out with the new setup and it was great. I'll add any relevant updates.
Reply With Quote
Old 04-24-2016, 08:03 PM
tommy panfish's Avatar
tommy panfish tommy panfish is offline
TT Regular
Join Date: Jun 2010
Boat: 1996 pro star
Location: midwest
Posts: 50
Quick question....do you have a pump? Or do you use pressure from motor? Been thinking about adding this....can post some pics.
Reply With Quote
Old 04-24-2016, 08:06 PM
lees23 lees23 is offline
TT Enthusiast
Join Date: Aug 2015
Boat: 2014 X2
Location: Midwest
Posts: 396
Where do you get pressurized cold water to mix with the hot?
Reply With Quote
Old 04-24-2016, 08:13 PM
uplander uplander is offline
MC Devotee
Join Date: Jan 2013
Boat: MC 2002 X30
Location: midwest
Posts: 1,029
got any photos
Reply With Quote
Old 04-24-2016, 10:57 PM
hankster2 hankster2 is offline
TT Newbie
Join Date: Jul 2015
Boat: 1988 Prostar 190
Location: Pacific Northwest
Posts: 9
I'll try to take some pics next time I'm out.

No. No pumps. I just tapped the cold water between the raw and engine water pumps with the tee I linked to. Water pressure is fine if I rev then engine to around 15-1800 rpm. I bought a pressure controlled pump off of amazon for $20 and may experiment with it to see if it let's me drop the engine RPM a little (phase II), but so far rev'ing the engine for a minute or so when a skier get's in/out doesn't seem like much of an issue.

My main purpose was to point out some great, cheap, and universally available items that can be used to put together a nice system that's actually better than a lot of the kits. I almost bought the tee off of a well known supplier site for $40 before I took a gamble on the Dorman. It works perfectly for 25% the price. Also I'd have frozen this weekend because the supplier part wouldn't have arrived in time for me to install it for the weekend.

I had a few small bits lying around and the hot water line was already run, but I probably have around $75 in my shower which is way better than a lot of the kits (and better IMHO because you don't have to mess with mixer valves to get the temperature right). I'm happy to help out with any other opinions/questions.
Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

All times are GMT -4. The time now is 05:14 AM.