then use ASCO marinized solenoid valves ... or get an electric winch to
operate the halyards. You do have a SAILboat, dont you?

The more 'crap' you add to the complexity only make you more vulnerable
to breakdown. KISS and risk puking into the bilge every few years.


In article , Doug Dotson
wrote:

I want to be able to switch pumps with the flick
of a switch not crawling into the engine compartment to switch
valves.

Doug
s/v Callista

"Rich Hampel" wrote in message
...
Dont need check valves if you install isolation valves.

In article , Doug Dotson
wrote:

That is my concern. I think I will install both check valves
and isolation valves as well.

Doug
s/v Callista

"Steven Shelikoff" wrote in message
...
On Mon, 12 Apr 2004 13:33:26 -0000, Larry W4CSC
wrote:

(Steven Shelikoff) wrote in
:


That begs the question why are you going to put two pumps in
parallel
if
you only want to run one at a time?

Steve


Backup?

Then I wouldn't put them in parallel without isolation valves. Even
if
it works when both pumps are good, you don't know how the pump will
fail.

Steve