wanting to set up a couple of small bilge pumps with associated pipe, ball valve, skin fittings and pipe tangs. I have sorted out the sizing of this via previous post on this. As the skin fittings will be about 2 feet above the waterline I am only looking at cheap fittings. Some I have been looking at are Tonval but there is a note to say that they should not be used in conjunction with ball valves or strainers. Is this just a particularly responsible retailer reminding buyers about the potential for losing your boat if the skin fitting fails or is there some other issue relating to fiting ball valves to these skin fittings?
thanks as always.
Results 1 to 9 of 9
03-03-12, 10:45 #1catalac08 Guest
Tonval skin fitting compatibility
03-03-12, 11:36 #2Registered User
Location : Benfleet Essex
- Join Date
- Jun 2007
Tonval has been discussed on here before, do a search. Its just another 60-40 brass with a few other trace elements in, not suitable for underwater use as it dezincifies.
Anyone telling you itrs bronze or gunmetal is telling porkies.
03-03-12, 12:19 #3
At two feet above the waterline, why not use plastic ?
03-03-12, 13:24 #4catalac08 Guest
03-03-12, 15:59 #5
03-03-12, 16:33 #6
03-03-12, 12:39 #7
I can think of no mechanical reason why a ball valve should not be fitted, so presumably they are guarding against galvanic corrosion. Fitted above the waterline I see no problem. I have the same arrangement on my little boat.Answers to some technical queries at http://coxengineering.sharepoint.com
03-03-12, 12:41 #8
03-03-12, 13:21 #9catalac08 Guest
Thanks for responses, pleased to see some confirming my feeling that the sellers (Aquafax) are just being refreshingly diligent in reminding people about the dangers inherent in skin fittings corrosion and subsequent failure.