Discharge vs vacuum pump

[Todd Sevier]

These pumps look the same is there a difference?

 

[my3sons]

Yes. Discharge is a T series pump. 1 duck bill each side, left hand threads to remove the fitting to get to the duck bills.
Vacuum pump is an S series pump. 2 duck bills each side, right hand threads. There might be other differences also. Their parts break downs should be on line. Look up Dometic T and S series pumps

 

[Todd Sevier]

Hi my3sons , thanks for that info. So can I use this as a vacuum pump, If i use the appropriate duckbill valves in the right position ?

 

[Lazy Daze]

The actual 12V MOTORS are identical. Is that what you're asking about?

 

[Todd Sevier]

No I want use the whole pump unit I'm in Canada . y spend $500. On a new one if I can convert what I have in stock.

 

[northern]

No I want use the whole pump unit I'm in Canada . y spend $500. On a new one if I can convert what I have in stock.

A new pump is 1KUS. I bought one last year because I was having problems. I got a rebuild kit including motor and diaphragm and rebuilt the old one. I now have a spare. The overboard pump on the boat is the same as the other two it has 4 duck bills. If you got a new one for 500 tell us where.

 

[Todd Sevier]

Bridge Marina Port Dover Canada, also seen one on Amazon $ 487.00

 

[bahamabreisus]

https://www.environmentalmarine.com/ Check these guys. Great customer service.

 

[my3sons]

Hi my3sons , thanks for that info. So can I use this as a vacuum pump, If i use the appropriate duckbill valves in the right position ?

First, verify that your discharge pump is a t pump. I assume because you are on fresh water, you can not use the discharge pump so you want to swap it with your vacuum pump? If it is a t pump, the nipple adaptors are left hand thread for a single duck bill. You won’t be able to get two duck bills on each side because the threads are right hand thread on the double duck bill nipple adaptors. You most likely will have issues with it holding vacuum With only one duck bill on each side. The t pumps are not required to hold vacuum, they just pump out the holding tank. I don’t know anyone that ever swapped the pumps to say one way or the other if it would work, but I suspect not, at least not correctly.

 

[Todd Sevier]

Hey thanks everyone for their input. Wife will just hafta learn to pee over the side loL