M 416 O/I holding tank valve question

[tausap]

Does anybody know if there is some kind of lock I am missing on the Y valve for the head overboard/holding tank selector?

I have an '82 M416 O/I which I just bought and it appears both valves are in the overboard discharge position. This is hard to imagine as the boat was surveyed and is in well above average condition and was meticulously maintained by the previous (and original) owner.

The valves are not a standard Y valve with a selector handle but rather a knob type valve like one might have on a garden hose spigot. They both only turn about a half inch.

[fcsob]

I have a 76 O/I with similar valves for through hulls. They are a type of gate valves & should turn alot more to open & close. I would haul the boat & replace them.

[sleeper41]

I own a '83 416 equipped with a gate valve. It should turn a few turns just as any gate valve. When you shut the gate valve the effluent is directed into the holding tank. When open, it is in the overboard position. You do not have to haul-out to change a gate valve.

J. Ali
Sleeper
416

[sleeper41]

You might considering joining the Out Island 41 owners group at Groups at Yahoo. It is a great source for OI-41 owners.

J. Ali
Sleeper
416

[fcsob]

Sorry miss read the post. My y valve for the aft head has also stuck. It's a newer plastic valve. It was full of a sand like deposit caused by sea water & urine,I was told. Also the hose from the head to the valve was full of this stuff. Flush better & use some fresh water & vinegar.

[tausap]

Originally Posted by sleeper41

You might considering joining the Out Island 41 owners group at Groups at Yahoo. It is a great source for OI-41 owners.

J. Ali
Sleeper
416

Interested, How does one do that?

Brett
s/v Midnite Sun

[tausap]

Originally Posted by sleeper41

I own a '83 416 equipped with a gate valve. It should turn a few turns just as any gate valve. When you shut the gate valve the effluent is directed into the holding tank. When open, it is in the overboard position. You do not have to haul-out to change a gate valve.

J. Ali
Sleeper
416

So, the question is, how do I avoid the dreaded sewage when changing the valve? I figure I will, of course, empty everything that can be emptied, and flush out as much as possible, but of course there is going to probably be something still left in there (murphy's law).