RobertL wrote:
On Monday, March 27, 2017 at 1:33:03 PM UTC+1, Chris Green wrote:
I'm looking for a replacement for the water feed pump on our little
boat. The 'standard' marine ones from Jabsco are a ridiculous price
as are the spares for the worn out one that I have so I'm looking for
alternatives.

A replacement pressure switch (all I *actually* need is the spring
contacts) for my Jabsco pump is more than £30. All their spares are
silly prices, even paper gaskets cost tens of pounds.

So, as I said, I'm looking for alternatives. The difficult part is
finding a pump that doesn't deliver *too much* pressure. It's easy to
find pumps that deliver 60 to 100 psi but this is too much for the
bendy plastic pipe plumbing. I need a pump that delivers around 10 to
15 litres/minute at 15 to 25 psi (that's 1 to 1.5 Bar).

As I said it's easy to find pumps that deliver 60psi or more and cost
only £10 to £15 but all the lower pressure ones cost £60 or more.
Maybe I'll have to spend that much but I'd prefer not to (surprise!).

Alternatively a pressure switch that operates in the 1 to 2 Bar range
would solve my problem, I could use it with the existing pump (and a
big fat automative relay to handle the current if necessary).

--
Chris Green
·

The "Marine Shurflo Water Pump 7 L/min 20 Psi 12v" might be suitable for
you. They cost less than £50.

My experience with Shurflow pumps has been very good. Work well, reliable, no priming needed.

Yes, the Shurflo pumps seem to be some of the most reasonably priced
ones. If nothing else appears that would seem to be the way to go,
thank you.

--
Chris Green
·