[C320-list] Floor Shower Pump

[David J Cardoza]

Thru Hull is closed I'll bet we have all done this at least once.  Real
mess if the sump is full.  Same thing can happen by pumping the head if
its closed if I remember right.

-----Original Message-----
From: c320-list-bounces at lists.catalina320.com
[mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Craig
Zicari
Sent: Sunday, August 15, 2010 5:54 PM
To: c320-list at catalina320.com
Subject: [C320-list] Floor Shower Pump

I turned the shower pump on and while the pump motor ran it was not 
pumping the water.  Then a heard loud sound which turned out to be the 
small insert plug blowing out of the top of the vent hose elbow which is

in the cabinet on the wall behind the head.  I put the plug back in; the

pump did pump the water but it blew out again. 

Do I have to replace the elbow to get one where the plug will stay in.  
Any idea why it blew out.  I am assuming that there was an airlock in 
the hose.  Or could it be that the drain was below the waterline so it 
would not drain.  We were at the dock and water was quiet; the boat was 
not rolling.

Thanks.