Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 19-02-2015, 13:31   #16
Registered User

Join Date: Feb 2015
Posts: 1
Re: JABSCO joker valve, again!

The joker valve can flood your boat, or sink it. The little flapper valve must also leak by to let water into the bowl. Mud dobbers will plug the vent and cause bubbles to leak back into the bowl. Try leaving the pumpout cap loose enough to vent. I had a towel halfway through the joker valve on a Cat. 25 which caused it to pump very hard. The piping is quite stiff and should not bend, but the vent line can. Good luck, and please let us know what you find. Charley
__________________

__________________
charley sheets is offline   Reply With Quote
Old 19-02-2015, 13:39   #17
Registered User
 
Wannabe-007's Avatar

Join Date: Aug 2012
Location: Somewhere in the South Pacific
Boat: Leopard 40 Catamaran
Posts: 243
Re: JABSCO joker valve, again!

Co-incidentally, I just watched this video clip yesterday...
Jabsco - Diagnosing Waste Back-flowing Into A Marine Toilet
__________________

__________________
----
Attitude is EVERYTHING!
Wannabe-007 is offline   Reply With Quote
Old 19-02-2015, 13:53   #18
Senior Cruiser
 
sneuman's Avatar

Cruisers Forum Supporter

Join Date: May 2003
Location: Jamaica
Boat: Tayana 37 Cutter
Posts: 3,167
Images: 37
Re: JABSCO joker valve, again!

Quote:
Originally Posted by 2Hulls View Post
It could be that simple. I finally gave up on Jabsco and replaced with Raritan about 5 years ago. They still require joker valve replacement as well as seals, but they are better engineered products, IMHO. I have no regrets for making the switch.

Dave
My story exactly. The Jabsco's are poorly engineered units and once you try to service them, they're never right again. I too went to a Raritan about 5 years ago and have been happy with it.

Having said that, lime buildup causes a lot of problems. Use a dose of CLR (available at hardware stores) every month or so.
__________________
sneuman is offline   Reply With Quote
Old 19-02-2015, 16:48   #19
Registered User

Join Date: Jan 2012
Location: San Diego
Boat: Pearson 39-2 "Sea Story"
Posts: 1,109
Re: JABSCO joker valve, again!

Y'all can stop JABSCO bashing: the vented loop was clogged. We had taken out the valve and cleaned it last time we had an issue, but I went back in and poked at the top, to relieve great pressure and odor. I then dipped a Qtip in the muriatic acid and poked around, then dipped many Qtips in water and rinsed inside and out. I suppose we should take out the whole loop and clean it? That will have to wait until we pump out in the morning.

I accidently dropped the screw cap for the valve in the muriatic acid, to much ill effect, so I ran out and bought a new cap and valve. Then I dropped the valve as I tried to install it. I hung upside down as far as I could, but I did not find it. Luckily, I still had the old one. Tomorrow, I may go out again to buy another cap and valve

PS: Does anyone know why the valve would squeak the first few flushes? These are the things the books don't tell you!
__________________
Greenhand is offline   Reply With Quote
Old 19-02-2015, 19:13   #20
Moderator Emeritus
 
Ex-Calif's Avatar

Cruisers Forum Supporter

Join Date: May 2007
Location: Singapore
Boat: Maxi 77 - Relax Lah!
Posts: 11,514
Images: 4
Re: JABSCO joker valve, again!

Quote:
Originally Posted by Greenhand View Post
Y'all can stop JABSCO bashing: the vented loop was clogged. We had taken out the valve and cleaned it last time we had an issue, but I went back in and poked at the top, to relieve great pressure and odor. I then dipped a Qtip in the muriatic acid and poked around, then dipped many Qtips in water and rinsed inside and out. I suppose we should take out the whole loop and clean it? That will have to wait until we pump out in the morning.

I accidently dropped the screw cap for the valve in the muriatic acid, to much ill effect, so I ran out and bought a new cap and valve. Then I dropped the valve as I tried to install it. I hung upside down as far as I could, but I did not find it. Luckily, I still had the old one. Tomorrow, I may go out again to buy another cap and valve

PS: Does anyone know why the valve would squeak the first few flushes? These are the things the books don't tell you!
I have a Jabsco manual - The only thing I do is lube the O-rings in the pump about once every 2 years.

I only use Vaseline. Squeaking indicates dry O-rings to me. I wouldn't be putting any vinegar in there.
__________________
Relax Lah! is For Sale <--- Click
Click--> Custom CF Google Search or CF Rules
You're gonna need a bigger boat... - Martin Brody
Ex-Calif is offline   Reply With Quote
Old 19-02-2015, 20:03   #21
Registered User

Join Date: Jan 2012
Location: San Diego
Boat: Pearson 39-2 "Sea Story"
Posts: 1,109
Re: JABSCO joker valve, again!

Quote:
Originally Posted by Ex-Calif View Post
I have a Jabsco manual - The only thing I do is lube the O-rings in the pump about once every 2 years.

I only use Vaseline. Squeaking indicates dry O-rings to me. I wouldn't be putting any vinegar in there.
The squeak was definitely coming from the lazarette, where the vented loop is located. It only happened the first couple of pumps.
__________________
Greenhand is offline   Reply With Quote
Old 19-02-2015, 20:09   #22
Registered User
 
ReMetau's Avatar

Join Date: Oct 2010
Location: Marathon, FL
Boat: Hans Christian 33
Posts: 648
Re: JABSCO joker valve, again!

Quote:
Originally Posted by charley sheets View Post
The joker valve can flood your boat, or sink it. The little flapper valve must also leak by to let water into the bowl. Mud dobbers will plug the vent and cause bubbles to leak back into the bowl. Try leaving the pumpout cap loose enough to vent. I had a towel halfway through the joker valve on a Cat. 25 which caused it to pump very hard. The piping is quite stiff and should not bend, but the vent line can. Good luck, and please let us know what you find. Charley
What? A bad joker valve can not sink your boat if your system has properly installed vented loops.
__________________
Don & Diana
s/v ReMetau - a Hans Christian 33
http://www.remetau.com
ReMetau is offline   Reply With Quote
Old 19-02-2015, 20:12   #23
Registered User
 
ReMetau's Avatar

Join Date: Oct 2010
Location: Marathon, FL
Boat: Hans Christian 33
Posts: 648
Re: JABSCO joker valve, again!

We had so many problems with our 2 Raritan we'll never go back to one.

The times we have seen jokers fail prematurely are usually due to back pressure caused by over filling the holding tank and/or a clogged tank vent.
__________________
Don & Diana
s/v ReMetau - a Hans Christian 33
http://www.remetau.com
ReMetau is offline   Reply With Quote
Old 19-02-2015, 20:14   #24
Writing Full-Time Since 2014
 
thinwater's Avatar

Join Date: Nov 2008
Location: Deale, MD
Boat: PDQ Altair, 32/34
Posts: 4,350
Re: JABSCO joker valve, again!

After extended testing on multiple boats, Practical Sailor reversed its decision and rated the Raritan joker valve too pick. It is interchangeable with the Jabsco valve; I've had on in for 2 years. It is a tick harder to flush, but not troublingly so.

PS did not recommend any type of oil, and neither did Peggy. Both recommended annual lubrication with synthetic grease, per the manual. Oil is only if squeaks start and you want to get by for a few days. If oil is used, yes, rape seed oil and olive oil are best.
__________________
Gear Testing--Engineering--Sailing

Writing full-time since 2014.
Bookstore:http://sail-delmarva.blogspot.com/20...ook-store.html
thinwater is online now   Reply With Quote
Old 19-02-2015, 20:23   #25
Registered User
 
Celestialsailor's Avatar

Join Date: Nov 2006
Location: In Mexico, working on the boat
Boat: Hallberg Rassy 35. and 14ft.Whitehall pulling skiff.
Posts: 8,013
Images: 5
Re: JABSCO joker valve, again!

Quote:
Originally Posted by 2Hulls View Post
It could be that simple. I finally gave up on Jabsco and replaced with Raritan about 5 years ago.

Did the same and never looked back.
__________________
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well-preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming: Wow - what a ride!"

http://wwwjolielle.blogspot.com/
Celestialsailor is offline   Reply With Quote
Old 19-02-2015, 21:11   #26
Registered User
 
Boatyarddog's Avatar

Join Date: Nov 2014
Location: Olympia, wa.
Boat: Mariner Ketch 32- 1979- hull 202
Posts: 632
Re: JABSCO joker valve, again!

Try a filter screen on the inlet of the head, maybe debris in the water.


Sent from my iPad SV Cloud Duster
__________________
Boatyarddog is offline   Reply With Quote
Old 19-02-2015, 21:14   #27
Registered User
 
Boatyarddog's Avatar

Join Date: Nov 2014
Location: Olympia, wa.
Boat: Mariner Ketch 32- 1979- hull 202
Posts: 632
Re: JABSCO joker valve, again!

I believe most Jabsco heads have a locking pump handle. Newer ones for sure.
So if it's leaking, lock the handle. It's a positive stopper.


Sent from my iPad SV Cloud Duster
__________________
Boatyarddog is offline   Reply With Quote
Old 20-02-2015, 05:21   #28
Registered User
 
ranger42c's Avatar

Join Date: Aug 2012
Location: Maryland, USA
Boat: 42' Sportfish
Posts: 2,985
Re: JABSCO joker valve, again!

Quote:
Originally Posted by charley sheets View Post
The joker valve can flood your boat, or sink it. The little flapper valve must also leak by to let water into the bowl. Mud dobbers will plug the vent and cause bubbles to leak back into the bowl. Try leaving the pumpout cap loose enough to vent. I had a towel halfway through the joker valve on a Cat. 25 which caused it to pump very hard. The piping is quite stiff and should not bend, but the vent line can. Good luck, and please let us know what you find. Charley

???

How would that work?

To get a towel -- you mean a bath towel or something? -- into our joker valve would require flushing said towel through the bowl... and almost nobody ever does that.






Quote:
Originally Posted by ReMetau View Post
What? A bad joker valve can not sink your boat if your system has properly installed vented loops.


Yep. And even if there were a problem with the loop, a joker valve on the discharge line that goes to a holding tank.... could only ever allow the holding tank's maximum to backflow into the bowl... and then elsewhere. (Yuck!) The weight of "stuff" in the boat would remain the same, no matter it's location.


-Chris
__________________
Selby Bay, South River, Chesapeake Bay, USA.
ranger42c is offline   Reply With Quote
Old 20-02-2015, 08:10   #29
Registered User
 
svHyLyte's Avatar

Join Date: Mar 2006
Location: Tampa Bay area, USA
Boat: Beneteau First 42
Posts: 3,434
Images: 25
Re: JABSCO joker valve, again!

Quote:
Originally Posted by Greenhand View Post
The squeak was definitely coming from the lazarette, where the vented loop is located. It only happened the first couple of pumps.
That "Squeek" is typically indicative of the "duck-bill" valve (similar to a tiny joker valve) at the top of the loop being installed backwards. If so, as air in the loop is pressurized by effluent being pumped from the toilet, it escapes through the (reversed) valve. With that, the lips of the valves vibrate together in a manner similar to a reed in a flute causing a squeeking sound. The lips of the duck-bill should be oriented facing into the loop, not outward, (which would also explain why your valve repeatedly clogs, which is unusual). One can dispense with the duck-bill valve entirely by using the fitting with a tube fitting and simply running a length of tubing (typically 1/4") to a point well above the heeled water-line level.

FWIW...
__________________
"It is not so much for its beauty that the Sea makes a claim upon men's hearts, as for that subtle something, that quality of air, that emanation from the waves, that so wonderfully renews a weary spirit."
svHyLyte is offline   Reply With Quote
Old 20-02-2015, 10:04   #30
Registered User

Join Date: Jan 2012
Location: San Diego
Boat: Pearson 39-2 "Sea Story"
Posts: 1,109
Re: JABSCO joker valve, again!

Quote:
Originally Posted by svHyLyte View Post
That "Squeek" is typically indicative of the "duck-bill" valve (similar to a tiny joker valve) at the top of the loop being installed backwards. If so, as air in the loop is pressurized by effluent being pumped from the toilet, it escapes through the (reversed) valve. With that, the lips of the valves vibrate together in a manner similar to a reed in a flute causing a squeeking sound. The lips of the duck-bill should be oriented facing into the loop, not outward, (which would also explain why your valve repeatedly clogs, which is unusual). One can dispense with the duck-bill valve entirely by using the fitting with a tube fitting and simply running a length of tubing (typically 1/4") to a point well above the heeled water-line level.

FWIW...
Nope, duckbill definitely down. That is the nice thing about doing it myself - Mr. Greenhand fully admits he may have done it upside the last time, since it is called a vented loop, not an anti-siphon loop.

It may have been the duckbill stabilizing on the upstroke, or something, though. It hasn't repeated since those initial pumps.
__________________

__________________
Greenhand is offline   Reply With Quote
Reply

Tags
jabsco

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Jabsco Joker Valve mestrezat Construction, Maintenance & Refit 40 21-10-2014 07:50
jabsco joker valve an annual replacement? Bob on OTTER Plumbing Systems and Fixtures 49 15-05-2013 06:51
Leaky Joker Valve off-the-grid Plumbing Systems and Fixtures 11 13-05-2011 17:30
Raritan Joker Valve Therapy Plumbing Systems and Fixtures 22 27-01-2010 20:50



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 15:16.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.