jet pump water pressure

[water rat]

how can i decrease the water pressure on a bearkley 12jg pump.right now i have a guage hooked up and at full throtle it pumps over 65 pounds.

[LakesOnly]

Originally posted by water rat
how can i decrease the water pressure on a bearkley 12jg pump.right now i have a guage hooked up and at full throtle it pumps over 65 pounds.
1) Are you referring to pump bowl pressure, and
2) If you are, why would you want to "decrease" it???
LO

[Squirtin Thunder]

Water Rat,
Duanne at HTP has a valve that will fix that problem. If you are talking about water line presure. I have heard that that water presure can be as high as 250lbs. And that is way tooo high. In a car the radiator has a 12 - 24 psi cap. It is amazing the amount of people that will disagree with you on this matter but Duanne has heard the few and has made a valve that will fix this problem for us. Duanne posts here reguarly so direct this to him.
Jim

[water rat]

line pressure is what i am questioning i think that 65 psi is to much

[Squirtin Thunder]

Duanne at HTP has just the ticket to fix the problem !!!!
Jim

[water rat]

how do i contact duanne

[Oldsquirt]

Originally posted by water rat
how do i contact duanne
Hi-Tech Performance (http://www.hi-techperformance.com/)

[Squirtin Thunder]

Duanne @ HTP 316-794-8616

[GlastronGuy]

http://www.hi-techperformance.com/images/Water_Bypass_Kit_DCP_0726.jpg

[kachina_labala]

I use a pressure reducing valve from grainger. I had to remove the screen trap from the valve because it was too fine but it seems to work great now. Its a Watts, p/n N35BU which is a Grainger p/n 6LM11. Its a 1 inch outside thread but the inside it threaded 3/4NPT. also shown is a raw water strainer.
Strainer (http://www.boatersworld.com/webapp/wcs/stores/servlet/ProductDisplay?storeId=10051&catalogId=10051&langId=-1&productId=708715#description)
http://www.hotboatpics.com/pics/data/500/4896DSC00400-med.JPG

[BigBlockBaja]

what does anyone think of this idea. Use some thing like this.
http://www.grainger.com/Grainger/productdetail.jsp?xi=xi&ItemId=1611760135&ccitem=
http://www.grainger.com/images/products/2A645.JPG
Install a tee in the feed line off the pump. put this on the tee dumping overboard. Would that work?

[clownpuncher]

I just had this one put one during a rebuild. My builder highly recommended it. Said with my HP I could run into real problems without one.
Now the incoming pressure from teh pump to the motor is around 30 lbs or so.
Pressure regulator is the black part on the upper right with the braided lines.
http://www.***boat.com/image_center/data/500/536otr_engine_2-med.jpg