Ballast Valve Lube
- Tsatzsue
- Chief Steward
- Posts: 75
- Joined: Tue May 03, 2011 4:22 am
- Sailboat: MacGregor 26M
- Location: Charlton, MA
Ballast Valve Lube
Foe all of you with the ballast slide valve on your boat, I have found the best lube. I have tried white lithium with poor results. The stuff turns chalky in no time and the valve gets harder to move than before. I got this stuff from Amazon for plumbing valves and O-rings for the house and gave it a whirl. I can now slide the valve with one finger. Works mint. I'm going to put some on the porta potty valve as well.
Amazon:
FOTU 711 Silicone Grease Lubricant Plumbers Waterproof for O-Rings Valve Sealant Faucet Slicon Lube with Scraper and Finger Sleeve (4 Oz, 1-Pack)
KB
Amazon:
FOTU 711 Silicone Grease Lubricant Plumbers Waterproof for O-Rings Valve Sealant Faucet Slicon Lube with Scraper and Finger Sleeve (4 Oz, 1-Pack)
KB
- Russ
- Admiral
- Posts: 7929
- Joined: Thu Oct 11, 2007 12:01 pm
- Sailboat: MacGregor 26M
- Location: Bozeman, Montana "Luna Azul" 2008 M 70hp Suzi
Re: Ballast Valve Lube
Awesome.
I'll give it a try. Mine is stiff as can be and seems to leak. Great idea for the porta potty too.
Here's a linky
https://www.amazon.com/FOTU-Silicone-Lu ... 3MQST?th=1
I'll give it a try. Mine is stiff as can be and seems to leak. Great idea for the porta potty too.
Here's a linky
https://www.amazon.com/FOTU-Silicone-Lu ... 3MQST?th=1
--Russ
- WinSome
- Engineer
- Posts: 165
- Joined: Thu Jul 07, 2016 7:35 am
- Sailboat: MacGregor 26X
- Location: Hamilton Ontario Canada
Re: Ballast Valve Lube
Consider this food-grade silicon grease as a preferred option. Much better for the water!
https://www.amazon.com/dp/B0BN82TPY4
There’s also food grade grease available for your trailer axles!
These are also available in Canada on Amazon.ca or your retailer.
Can’t wait for the soft water to arrive. Our boatyard in still knee deep in white stuff. At least it contributes to the lakes water levels.
https://www.amazon.com/dp/B0BN82TPY4
There’s also food grade grease available for your trailer axles!
These are also available in Canada on Amazon.ca or your retailer.
Can’t wait for the soft water to arrive. Our boatyard in still knee deep in white stuff. At least it contributes to the lakes water levels.
- NiceAft
- Admiral
- Posts: 6509
- Joined: Tue Feb 01, 2005 7:28 pm
- Sailboat: MacGregor 26M
- Location: Upper Dublin,PA, USA: 2005M 50hp.Honda4strk.,1979 Phantom Sport Sailboat, 9'Achilles 6HP Merc 4strk
Re: Ballast Valve Lube
WinSome,
What is the name of the product?
All that shows up is the Amazon logo.
Win some, lose some.
What is the name of the product?
All that shows up is the Amazon logo.
Win some, lose some.

Ray ~~_/)~~
- kmclemore
- Site Admin
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- Location: Ambler, PA -- MACX2018A898 w/ Tohatsu 50D -- 78 BW Harpoon 4.6 -- 2018 Tahoe 550TF w/ 150 Merc
- Be Free
- Admiral
- Posts: 1601
- Joined: Fri Nov 23, 2012 6:08 pm
- Sailboat: MacGregor 26X
- Location: Steinhatchee, FL
Re: Ballast Valve Lube
Your ballast valve is a great application for silicone grease (sometimes called plumber's grease) since it is, in fact, a plumbing valve. I've never felt the need to lubricate it but if I did silicone grease would be my #1 choice.
The active ingredient in silicone grease is usually polydimethylsiloxane (PDMS). If that's the only thing in there you should be fine.
I've been using silicone grease commercially and personally for decades. It is generally considered safe and non-toxic in any reasonable concentration. The amount you would use to lubricate the ballast valve is minuscule. You will probably replace the valve before you will need another 2 ounce tin of silicone. Buy small containers. You will probably lose it before you use it up.
Check the label. Some "plumber's grease" brands will add additional ingredients to differentiate themselves from the competition. All you need is the PDMS.
The active ingredient in silicone grease is usually polydimethylsiloxane (PDMS). If that's the only thing in there you should be fine.
I've been using silicone grease commercially and personally for decades. It is generally considered safe and non-toxic in any reasonable concentration. The amount you would use to lubricate the ballast valve is minuscule. You will probably replace the valve before you will need another 2 ounce tin of silicone. Buy small containers. You will probably lose it before you use it up.
Check the label. Some "plumber's grease" brands will add additional ingredients to differentiate themselves from the competition. All you need is the PDMS.
Bill
2001 26X Simple Interest
Honda BF40D
"If I were in a hurry I would not have bought a sailboat." Me
2001 26X Simple Interest
Honda BF40D
"If I were in a hurry I would not have bought a sailboat." Me
-
- Admiral
- Posts: 2373
- Joined: Mon Sep 28, 2020 11:16 am
- Sailboat: MacGregor 26X
- Location: NH & SC
Re: Ballast Valve Lube
Hi All!
As the ballast valve was fairly stiff when we were first adopted Over Easy I initially just applied the white lithium grease and got the same chalky results. Since then as part of annual preseason inspection and maintenance we’ve applied a dab of marine axle grease to the gate valve with good results.
Now the challenge is getting the bivalves to stop wanting to attach themselves to the slide plate of the gate valve……haha….
They stick really well and after a month or two have to be chiseled off!
I have tried Teflon grease too but they mollusks still attach themselves…. Any suggestions anybody?
Best Regards,
Over Easy

As the ballast valve was fairly stiff when we were first adopted Over Easy I initially just applied the white lithium grease and got the same chalky results. Since then as part of annual preseason inspection and maintenance we’ve applied a dab of marine axle grease to the gate valve with good results.
Now the challenge is getting the bivalves to stop wanting to attach themselves to the slide plate of the gate valve……haha….
They stick really well and after a month or two have to be chiseled off!
I have tried Teflon grease too but they mollusks still attach themselves…. Any suggestions anybody?
Best Regards,
Over Easy


Last edited by OverEasy on Sun Mar 09, 2025 11:42 pm, edited 1 time in total.
- Russ
- Admiral
- Posts: 7929
- Joined: Thu Oct 11, 2007 12:01 pm
- Sailboat: MacGregor 26M
- Location: Bozeman, Montana "Luna Azul" 2008 M 70hp Suzi
Re: Ballast Valve Lube
I found this video on lubricating the valve. It's just an RV dump valve. Interesting. I might try it.
--Russ
-
- Admiral
- Posts: 2373
- Joined: Mon Sep 28, 2020 11:16 am
- Sailboat: MacGregor 26X
- Location: NH & SC
Re: Ballast Valve Lube
Hi Russ!
Great preventative video tip!
It’s worth a try for Over Easy while she’s currently ashore getting prepped for the upcoming season.
Thanks!
Best Regards,
Over Easy

Great preventative video tip!

It’s worth a try for Over Easy while she’s currently ashore getting prepped for the upcoming season.
Thanks!
Best Regards,
Over Easy


- Tsatzsue
- Chief Steward
- Posts: 75
- Joined: Tue May 03, 2011 4:22 am
- Sailboat: MacGregor 26M
- Location: Charlton, MA
Re: Ballast Valve Lube
Overeasy,
I would try the lube that I mentioned before drilling. No need to drill. A couple of strokes after you lube and you can move it with one finger. Lube the rubber groove and the stem. All done. The stuff is cheap too. I'm done with lithium grease.
KB
I would try the lube that I mentioned before drilling. No need to drill. A couple of strokes after you lube and you can move it with one finger. Lube the rubber groove and the stem. All done. The stuff is cheap too. I'm done with lithium grease.
KB