Thanks

Graham

(Sunshine no 66)

I have a similar problem and just assumed it was old-age - the boat that is - but clearly not.

It will be interesting to see if anybody has a solution.

'An anti-syphon loop will not help when located on the pump inlet, the pump will suck air through the valve.

I would not expect the V pump to syphon as it has cup seals. If the seals are poor then water may trickle out with this installation. It might be an idea to replace the seals.

The only other things I can think of would be to either put a pinhole at the top of the loop which should break the syphon or to place a flow restriction valve in the pipe.'

I've replaced the seals and did notice the pumps feels more sealed, but I've not put it to the test in the sea - launching on 23rd April.

Graham