Replacement for Jabsco diaphragm pump

[Tintin]

I've got 4 Jabsco self priming diaphragm "shower" pumps on Tintin, and they are well past their best, with corrosion on the motor body, and pretty poor flow rate.

(Port bilge, stbd bilge, fwd shower, aft shower)

At £310 each they seem expensive, and the service kits are about £55, but the diaphragms etc don't s3em to be the problem.

Am wondering what to replace them with, and whether a self-priming impeller pump is better (there are inclined filters and strainer strum boxes.

The Jabsco model.is 37202-2012, with a flow rate of 13LPM / 780LPH / 206usGPH.

 

[MontyMariner]

but the diaphragms etc don't seem to be the problem.

Check the diaphragm closely, on mine I found a tiny split right along the line of the clamp.
You an buy sheets of Nitrile diaphragm rubber.
What are the 'etc' bits you have checked?

 

[MontyMariner]

pretty poor flow rate.

Have you checked the inline filters?

 

[penfold]

What's a poor flow rate? 13 litres per minute is less than a bucket and that's at zero head.

 

[Tintin]

Have you checked the inline filters?

Yes

 

[Tintin]

Am thinking to change over to the Jabsco Par Max, or one of the cheaper impeller ones. 19mm inlet and outlet needed.

(By the way I do also have a much larger proper bike pump, 3500gph, these ones are just for "comvenience" emptying

 

[PaulRainbow]

Shower pumps are poor as bilge pumps, fit proper bilge pumps.

For shower pumps, i fitted a Whale IC pump. No float switches, fully automagic, empties both of our showers. Excellent bit of kit.

 

[Tintin]

Check the diaphragm closely, on mine I found a tiny split right along the line of the clamp.
You an buy sheets of Nitrile diaphragm rubber.
What are the 'etc' bits you have checked?

The 2 joker valves

 

[Tintin]

Shower pumps are poor as bilge pumps, fit proper bilge pumps.

For shower pumps, i fitted a Whale IC pump. No float switches, fully automagic, empties both of our showers. Excellent bit of kit.

I must say I was surprised to find them in there, and they looked like they had been fitted from factory.