prv
Well-known member
I'll allow Leesan to explain Pete:
"If you have a 1 1/2" deck fitting on your boat but you cannot get the suction probe at your local pump out station to fit properly, your deck fitting may not comply to ISO8099. This adapter screws into your current deck fitting and enables you to get good suction when you pump out."
Hmm, ok. The one I was idly examining the other day had a great big cone that looked like it would jam tightly into any reasonable size of opening, ISO or no ISO. I guess they're not all like that.
The redundant pump-out fitting on our deck looks identical to the water filler, except for having WASTE embossed on it.
Pete