Gate Valve Replacement

[Ed White]

OK, so I have a frozen (shut) intake (gate) valve on my 1984 Hunter 27 with a 12 hp Westerbeke 12 B, and the boat is already in the water. Does anyone have ideas of how to change the valve out without hauling the boat. I got a few suggestions such as plugging the inlet (which is a slotted bronze fitting) from under the boat using toilet bowl sealing wax and going to work from the inside... Anyone?????

 

[Pat McCartin]

Ed,

Put a plunger over the sae side of the thru-hull. Then go to work on the inside. You can also go to NAPA and buy a rubber expansion blug for TEMPORARY use. I stress temporary because it's made with regular steel.Pat McCartinInland Marine DieselBuford, Gaimd_ga@hotmail.com

 

[Glenn Strazds]

I replaced all of the gate valves on my Hunter 40 1985 model... with ball valvesI also decided to replace all the through hulls with flush mounts... This occurred after I discovered that I had to use enormous force to get the gate valve to come off; which caused me think that I had caused damage to the seal [rubber] between the hull and bottom of the mushroom through hull fitting... This occurred when I had to dismantle the rear bathroom in order to get "purchase" on the rear sink gate valve...So the first thing you should decide is!Can I get a pipe wrench on the gate valve; apply sufficient leverage on it; to be able release, the likely over torqued fitting on to the through hull; further with out damaging the through hull seal..4-5 of my through hulls are not sufficiently accessible.So I discovered a trick..Using a grinder... grind out the through hull from underneath the boat; takes 10 minutes Go at it from the middle of the hole; then you can observe progress before you cut into the hull...As for doing it in the water.. well; be aware of the aboveSincerely Glenn StrazdsP.S. Of the 8 ball valves; the first 1.5" is marine with a drain, the next 2 come from a marine supply store... next 4 from home depotthe Last 2 from wholesale plumbing supply store 1.5" hard to find.. $22.00us no drainAs for through hulls that marlin plastic appears to be OK