Shut off valve for raw water
01-02-2012 | 11:54 AM
#21
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Joined: Aug 2006
Posts: 1,026
Likes: 16
From: Renton, Wa
What size BV's are people using?
Strainers I have are 1" NPT
H2O Pumps I have are 1" NPT
Original hose was 1.25" from PU, through pump, to engine.
Most PU's I see are 1.25"
I've seen transom plate adapters that are only .75" NPT where stock was a 1.25" neck.
How much HP can a .75 NPT feed?
How about 1" NPT?
Strainers I have are 1" NPT
H2O Pumps I have are 1" NPT
Original hose was 1.25" from PU, through pump, to engine.
Most PU's I see are 1.25"
I've seen transom plate adapters that are only .75" NPT where stock was a 1.25" neck.
How much HP can a .75 NPT feed?
How about 1" NPT?
01-02-2012 | 12:39 PM
#22
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Joined: Jan 2004
Posts: 4,480
Likes: 43
From: Tennessee
Typically they are done in 1" NPT. That is roughly the same size as 1 1/4" hose. If you add ball valves, be sure to get "full flow" ball valves. CP Performance has some nice SS full flow ones. I think they are about $60-65 each for 1" in SS. You could also check McMaster Carr or Fastenal.
Eddie
Eddie
01-02-2012 | 04:25 PM
#23
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Joined: Aug 2004
Posts: 1,085
Likes: 22
From: Fort Worth, Texas
I want to say that you are right on this double clamp or rule of thumb thing, but when you actually have one of those other clamps in your hand and you can see the quality of the clamp...you will see what I mean when I say that you will only need one clamp per connection. You can actually tighten this clamp down so tight that it will cut the hose off.
