i called trick and he doesn't have any in stock. was wondering who makes them? who has them? i would like to plumb mine of the kpm strainers i got from fred as i have one large and one small port that are not being used. thx in advance for any info, ratman

You have to plumb after the seawater pump and before the engine.
Get it from Mercury. Do a search to get the part number or maybe somebody will post the part number for you.

is merc the only manufacturer for these? thx ratman

ttt

any of riggers want to help i guy out? who else makes a pressure relief valve for the raw water plumbing? thx in advance

I used something like this, but I think mine have a smaller adjustment range. This one is adjustable from 0 - 300 psi.


http://www.grainger.com/Grainger/pro...543225&ccitem=

http://www.cpperformance.com/detail.aspx?ID=521

This is for a 1/2" valve. I tried one a couple yrs ago, wasn't large enough. I seen the same valve but in the 3/4" version. These are WATTS brand valves that are sold by Teague and CP for a bit more $$ than what can be purchased thru elsewhere. I seen them in the area of $30.

WATTS 530C

Not sure about the high pressure rating numbers, other than my 1/2" was fully open at only 20psi according to my dash gauge.

I believe where the size is listed as 1/2 to 3/4 it is the discharge size. They are still only 1/2 on the goes into end. You can use two of these. Set one at a slightly lower pressure than the other. I ended up with two and it works perfectly. The lower pressure one is open most all of the time and the higher pressure opens at higher RPMS. By balancing the settings you can achieve 5lbs. at idle and 15 at WOT.

Got mine from Eddie marine. just put them on last week and they work great....

Here's a link for ya.............


Water Pressure Relief Valve


Cougarman