Push 155 Pump Cooling fitting size?

JKMike

JKMike

Location
Annapolis, Maryland
Hey yaw,

For those of you who have a Push 155 setback pump or something similar, what size NPT cooling fittings did you drill and tap the pump for? I would like to go with 2 x 3/8" NPT to 1/2" barb fittings rather than 1/4" NPT, for increased flow, but they feel a little large. I was hoping to find someone who has successfully ran 3/8" fittings without running into problems.
 
M

mikesx

JKMike said:
Hey yaw,

For those of you who have a Push 155 setback pump or something similar, what size NPT cooling fittings did you drill and tap the pump for? I would like to go with 2 x 3/8" NPT to 1/2" barb fittings rather than 1/4" NPT, for increased flow, but they feel a little large. I was hoping to find someone who has successfully ran 3/8" fittings without running into problems.
Click to expand...
Unless it’s made with bosses 3/8 NPT may be a little too big for tapping just the wall.
 
JKMike

JKMike

Location
Annapolis, Maryland
mikesx said:
Unless it’s made with bosses 3/8 NPT may be a little too big for tapping just the wall.
Click to expand...
I wouldn't call them bosses but the pump does have a thicker section for installing fittings. It's 0.31" thick there.

PUSH_155_setback_MAG_pump_3.jpg
 
M

mikesx

JKMike said:
I wouldn't call them bosses but the pump does have a thicker section for installing fittings. It's 0.31" thick there.

PUSH_155_setback_MAG_pump_3.jpg
Click to expand...
3/8 NPT threads are .675 OD. As general rule of thumb I like to see what I’m tapping as thick as my OD. But this is jet ski stuff where general rules of thumb go out the window…..
I’d ask Push what they think about going that big.
 
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