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Old 05-26-2022, 08:16 AM   #1
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gate valve replacement

One of my gate valves is leaking a small amount. I'm not sure if it's the black or grey. I thought it might be best to replace them both while I'm doing the job. Anyone advice on changing these on my vintage coach and where to buy? Thanks
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Old 05-26-2022, 08:24 AM   #2
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Pretty simple job. Just get some plumbers grease to help hold the rubber gaskets in place when you are installing the new valves.
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Old 05-26-2022, 08:26 AM   #3
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Question. Are they cable valves or with a handle?

If they are cable valves, make sure your new valves have a replaceable cable.

Valteta has both. As far as I know, Bristol valves do not have replaceable cables.

Can you see the valves?

Sometimes, the pipes to the valves can be removed to make installation easier. If not, clearance to get the new valve in place.
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Old 05-26-2022, 08:48 AM   #4
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Mine have handles. I have not inspected them closely to see if there is a brand name visible.
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Old 05-26-2022, 08:51 AM   #5
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Pretty simple job. Just get some plumbers grease to help hold the rubber gaskets in place when you are installing the new valves.
I have some lube I use for pool pump seals I was thinking to use.
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Old 05-26-2022, 08:54 AM   #6
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Does anyone know what size gate valves I need?
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Old 05-26-2022, 10:20 AM   #7
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Originally Posted by noserider View Post
One of my gate valves is leaking a small amount. I'm not sure if it's the black or grey. I thought it might be best to replace them both while I'm doing the job. Anyone advice on changing these on my vintage coach and where to buy? Thanks
Just try to snug up the four bolts on the valve. That usually fixes a small drip.
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Old 05-26-2022, 10:24 AM   #8
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Just try to snug up the four bolts on the valve. That usually fixes a small drip.
Good tip, I'll give that a try. Thanks!
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Old 05-26-2022, 10:26 AM   #9
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Good tip, I'll give that a try. Thanks!
Be gentle, just snug, not cranked down...
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Old 05-26-2022, 10:42 AM   #10
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Be gentle, just snug, not cranked down...
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Old 05-26-2022, 11:27 AM   #11
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You say you have a leak, are you talking external, dripping into the bay, or internal, leaking into the discharge tube?

Tightening the bolts may help depending on what type of leak you have.

It may sound/seem gross, but open both valves and use a toothbrush to clean the seals. You may not be able to see the seals, but you should blindly be able to reach them. They're guillotine type valves and when the plate slides across it can push debris into the seals.
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Old 05-26-2022, 12:54 PM   #12
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The gray and black valves are typically different in size. I think typical sizes are 1 1/2" and 3" valves are the norm, larger size for the black. I assume that you do not have the macerator design on your RV.

When I changed mine, I was given all kinds of hits for separating the pipes far enough to get the old valve out and new valve in to the piping. Turns out, I didn't need it, but I was prepared with a couple of ratchet straps and bar clamps.

Everything you do needs to be with tender loving care to avoid cracking the PVC.
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Old 05-26-2022, 12:55 PM   #13
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You say you have a leak, are you talking external, dripping into the bay, or internal, leaking into the discharge tube?

Tightening the bolts may help depending on what type of leak you have.

It may sound/seem gross, but open both valves and use a toothbrush to clean the seals. You may not be able to see the seals, but you should blindly be able to reach them. They're guillotine type valves and when the plate slides across it can push debris into the seals.
Leak is into the discharge tube. Lol. Your right that does seem kinda gross!
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Old 05-26-2022, 12:58 PM   #14
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Leak is into the discharge tube. Lol. Your right that does seem kinda gross!
My bad, my suggested fix was for outside the valves dripping. In your case it requires your wife with smaller hands to get to the seals within the drain. Just say you read it here on IRV2.com
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