Delta Extension kit

Delta Extension kit
Model #:RP37776

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Delta Extension kit
 
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Extension kit

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The shanks are too short on my Delta 25706LF-RB Lavatory Faucet bath faucet. Which extension kit do I use?
Topics: Assembly
1 year, 8 months ago
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Answer: 
Thank you for your question. Delta Faucet model # 25706LF-RB has a maximum deck thickness of 1 1/8" and there is not a thick deck mounting kit available for 4" centerset faucets.
Skill Level: Advanced
1 year, 8 months ago
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Indianapolis, IN, USA
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Answer: 
Home Depot, does make a universal shank extension kit that works just fine. I did use the right amount of teflon tape, some decent torque and replaced the washers that came with that HD kit with some off the shelf washers that are about 1/16" thicker.
Delta "does not" make an extension kit. With the number of Granite counter tops installed these days, that really surprises me. In reality, the faucet shank only needs to be about one-half inch longer to eliminate this issue.
1 year, 8 months ago
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Delta Extension kit
 
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faucet extender kit

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Shane
Metairie, LA, USA
i bought 2 Delta 3551 Dryden series bathroom faucets and they do not fit with the 3cm granite that i have, and i am looking for some sort of extender kit to attach it to the cournter top. Please help
Topics: Assembly
Age: 35 to 44
Gender: Male
Project Type: New
Ownership: < 1 year
Skill Level: Intermediate
1 year, 8 months ago
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Shane
Metairie, LA, USA
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Answer: 
Thank you for your question. Delta Faucet model 3551 has a maximum deck thickness of 1 1/8 inches. However, we do offer a thick deck mounting kit that can add an inch to the deck thickness. Please order Delta Faucet model # RP10615 for each inch you need.
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1 year, 8 months ago
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Answer: 
In reality, the faucet shank only needs to be about one-half inch longer to eliminate this issue.

I used a Home Depot Shank Extension Kit. I replaced the washers that came with the kit with slightly thicker washers. I also wound teflon tape (about 3x) around the bottom inch of the shank and tightened them well.

Because it my first attempt yeilded a leak on one side, I suggest you make all the connections to the faucet while under the sink and test the lines by running water through the faucet into a big pot. Shut the water off and dry everything very well with a paper towel. Then use a dry paper tower or toilet paper to see if there is any water leaking. Then disconnect the water feed lines (leave the shank extensions on, re-teflon the shank extensions being very careful to get all of the old teflon tape off first. and you should be good to go. Note: the holes my counter guy cut were too close to accomodate the shank extensions so I used a Dremel with the round sanding wheel to shave off the tiny grip protrusions from the shank extensions.

Also, the extensions were too long so I doubled the O-Ring extenders on one side and used a 2x4 with a hole I drilled in it to extend the other side.

IMPORTANT: Don't overtighten the white locking spin-nuts because the downward force could cause the extension to separate just enough from the shank to cause a leak. Hand tighten them just to the point where the faucet stays put.

See the photo immediately below (click photo icon to enlarge)
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1 year, 8 months ago
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