marine wc

[emnick]

how many times should you pump the toilet to flush it, should you pump enough water to send fresh water`(not soiled)all the way through i.e. fill the 50mm pipe with new water? I have worked out about 15 pumps!

 

[davidbains]

This sounds like a personal preference of how much you want the boat to smell!
I pump my Lavac frequently and give it shots of washing up liquid, and
not just after I've used it either!!

 

[vyv_cox]

Your figure sounds about right. If you assume the pump bore to be about the same as the outlet pipe bore then it's simply a case of dividing one by the other, plus the number of strokes to empty the bowl, plus a couple for luck!

 

[webcraft]

This is why heads are smelly in a lot of boats. WIth a three or four foot anti-syphon loop most people probably aren't pumping enough - i.e. most boats are sailing around with a four foot tube full of ****.

We don't have an anti-syphon loop - our outlet pipe is one inch long and the heads never smells.

- Nick

 

[VicMallows]

Agree. Always pump at least 15 times, even if just checking the boat and not using the head. Never had a smell problem.

Vic

 

[Stemar]

On my DS course, the skipper insisted on at least 20, probably because he though that if he said 15 he'd get 10...

 

[jerryat]

Exactly! A 'death if you don't' rule on our boat!! /forums/images/graemlins/wink.gif /forums/images/graemlins/grin.gif /forums/images/graemlins/grin.gif /forums/images/graemlins/grin.gif