Which fresh water pump

[Whitelighter]

My fresh water pump is getting on a bit and is really quite noisy.
There are no capacity/pressure details on the pump so I can't identify currrent specs.

For a 50ft boat with two heads (shower in each) and the usual water demands what pump would be a good balance of quality and cost? And ideally I'd like a whisper quiet one

 

[No Regrets]

Jabsco do a good selection, on Ebay for £60ish quid. Not whisper quiet, but you can tell at night if you have a small leak on the bright side!

Most are OK if run dry, as I found out recently when SWMBO ran the water tank dry, and left the boat for three hours with the unpressurised pump just running and running.... :ambivalence:

 

[matthewriches]

I have a Shurflo from ASAP. The biggest one in their range and it is one powerful beast. When I bought the boat I thought the pump was a little underpowered so went out and bought the Shurflo..... I now have water pressure better than at home less than 2km from the water plant. The shower is like a power shower, again better than on the land!

 

[No Regrets]

Ah, but they empty the water tank real fast!!

 

[matthewriches]

This is the one I have https://www.asap-supplies.com/brand...-aqua-king-ii-supreme-fresh-water-pump-509632

But with a water tank in excess of 800 litres, I don't really feel it too much even when staying on board occasionally 5 days in a week.

 

[MapisM]

J, I can't suggest by heart a proper sizing, but all engineers down here agree that the best stuff you can find is the one from this builder:
https://www.gianneschi.info/en/productsPage
In fact, fwiw that's what I've seen installed in most top builders boats (SL and others).

 

[Tradewinds]

Make sure your calorifier is rated to 3.8bar (55psi).

This is the one I have https://www.asap-supplies.com/brand...-aqua-king-ii-supreme-fresh-water-pump-509632

But with a water tank in excess of 800 litres, I don't really feel it too much even when staying on board occasionally 5 days in a week.

 

[superheat6k]

I am on my second boat to which I have fitted a Seaflo 17 litre / minute / 3.5 Bar pump. Ours is right behind the headboard in the aft cabin, and I barely hear it cutting in. I am not sure it would run two showers together, but the shower on the boat is more powerful than the power shower at home with just one in use.

It will also run for several days with no water flow without harm. This happened when my calorifier tank split.

Might be Chinese, but IMHO an excellent diaphragm pump.

 

[Deleted User YDKXO]

J, I can't suggest by heart a proper sizing, but all engineers down here agree that the best stuff you can find is the one from this builder:
https://www.gianneschi.info/en/productsPage
In fact, fwiw that's what I've seen installed in most top builders boats (SL and others).

Agree with that. All the pumps on my existing Ferretti and previous ones have been Gianneschi and touch wood never had a problem with any of them. The water pump fitted to my existing boat is the Ecojet 1B model

 

[Piers]

Play d'eau (Fleming 55) uses a Headhunter centrifugal pump which is really quiet. http://www.headhunterinc.com/product/x-caliber-12-24-dc-pressure-syste/

Used to have a Jabsco but it was SO noisy we changed to Headhunter.

 

[matthewriches]

Make sure your calorifier is rated to 3.8bar (55psi).

Second that. Worth checking the PRV rating otherwise the release will always want to open to let off excess pressure.

 

[John100156]

My fresh water pump is getting on a bit and is really quite noisy.
There are no capacity/pressure details on the pump so I can't identify currrent specs.

For a 50ft boat with two heads (shower in each) and the usual water demands what pump would be a good balance of quality and cost? And ideally I'd like a whisper quiet one

I have the following fitted to my F43 Jez, it performs really well, from the Jabsco/Xylem shop:

Flojet R4325-143APressure-controlled pump

12 volt DC
High Pressure

Connections: 19mm (3/4")bore hose
Dimensions: 252mm long, 160mm wide, 100mm high
Fuse Size: 15 amp
Output: 17 litres/minute (3.8 gallons/minute)
PRESSURE SWITCH - cuts in at 1.4bar (20psi) - cuts out at 2.8bar (40psi)
Efficient, high-flow, self-priming pump serving 4 or more outlets
Multi-diaphragm design self primes to 1.5m vertical lift, can run dry without damage
Supplied with snap-in ports for hose or Hep20 connectors
Motor protected by automatic thermal overload cut-out

Not sure if you would need the 24VDC model or not, but its a good pump.