Greetings All....
I'm surprised this subject has not surfaced previously....at least my search did not uncover a previous thread on this subject.
Issue: Galley sink drains unacceptably slow.....we're pondering the idea of installing a switched pump for the galley sink.......and would appreciate your thoughts on the subject.
Suspect: Clogged thru-hull (ok...I hear the "duh's" from you people as far away as Catalina.....but I thought there were no "dumb questions"....)
Actions Taken: Rooted out the thru-hull from inside w/ wire hanger.......little to no joy
Observations: Steady (but slight) back flow of sea water into the craft when the sink drain hose is disengaged from the thru-hull (this mus be normal....yes?)
Craft was pulled last summer for paint....I would like to think that the servicing agent cleaned the thru-hulls as part of the service...but would not bank on it....clearly enough time for growth to return though....
I know......first.....I need to dive on the boat and inspect/clean the thru-hull.....BUT....at its best...the sink drained slow......so a pump is an intriguing premise....clean thru-hull or not.
What say you guys....with thanks in advance.....
Mark D'Etcheverry
"In Concert"
Hull 1956
Smithfield, Virginia
I do not want to pour anything down the sink that is chemical based. I keep and use a small rubber plunger from time to time, just to flush any junk out of the line and the through hull. Stopper up one sink and plunge away and then repeat on the other sink.
John Meyer 2135 Cruising currently at Ensenada, Mexico
John Meyer
Hilbre
C36 MKll, Hull 2135
Cabrillo Marina, San Pedro, CA
Be careful pressurizing the drain line, as it also connects to the refrigerator footpump. My overly active imagination sees a potential for a yucky disaster happening in the fridge as a result of the plunger, but maybe not. John's is clearly the voice of experience, and I've never done it.
Larry Brandt
S/V High Flight #2109
Pacific Northwest, PDX-based
2002 C-36 mkII SR/FK M35B
[url]http://c34.org/bbs/index.php/topic,5789.0.html[/url]
Stu Jackson, C34IA Secretary, C34 #224, 1986, SR/FK, M25 engine, Rocna 10 (22#)
Even if you have an unclogged sink drain physic's will still come into play with water draining. It is just natural on a boat that is in the water.
Randy Sherwood
Mutualfun 1990 # 1057
T/R W/K M35a
Home. Charlotte, Mi.
Boat. St Augustine,Fl.
We had a similar problem on our C36mk2. I have improved the sink drainage by removing both outlet pipes from under the sink and replacing them with longer hoses and placing the 'T' joiner as low to the seacock as possible. This allows the sink to drain at a quicker rate and the water does not flow back into the second sink due to back pressure.
Bernd
Catalina 36mk2 - Wing keel
Sydney, Australia
Bernd Rominger
1995 Catalina 36Mk2, Wing keel, Hull 1413
'BORN FREE'
Gippsland Lakes
Australia
Mark,
"Steady (but slight) back flow of sea water" means that you have an obstruction in the thru-hull. When you take the hose off, and open the thru-hull, you should have a large fountain of water shooting into the boat. I would never 'assume' that a yard worker did anything to my boat unless I personally watched him do it. Time to grab the mask and flippers!
Tom Sokoloski
C36/375IA Past Commodore
Noank, CT
I will second what Tom just said. You should get a solid jet of water about a foot high when you detach the hose from the seacock. How do I know this? See "Catastrophic seacock failure" a few weeks back.
If you don't want to go diving, but don't mind getting wet, remove the hose again, and clean out the seacock with a piece of 1/4" wooden dowel.
You will know when you have it unclogged! Then remove the dowel and simply close the seacock. You can then reinstall the hose.
The problem with the sink in general is that the height of the sink is not that much over the water line, so there is not a lot of "suck" when you drain the sink
Dave
Ballena 1995 Mk II #1445