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Old 03-09-2016, 07:32 PM   #11
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I believe there is a transition glue you can use for abs to pvc. Click image for larger version

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Old 03-09-2016, 07:33 PM   #12
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Originally Posted by garmford View Post
That's what I'm talking about. The camper has a fixed 1 1/2" female and the admittance valve is 1 1/2" male. The ones I've seen at Home Depot say they are 1 1/2" but they are female if I remember correctly. I've checked menards too. That's why I had the thought of changing the plumbing to accept the valves that I can readily buy from Home Depot.
That leads me back to my original question, does the white pvc work with the black pvc?
Ive never seen a female air admittance valve. What you are seeing at the store in the packaging is a female pipe adapter slid over the threads of the male air admittance valve. When you open the package, throw away the female adapter and thread the new male air admittance valve into the female adapter under your sink.

Bruce
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Old 03-09-2016, 07:36 PM   #13
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Originally Posted by Scubanut View Post
I believe there is a transition glue you can use for abs to pvc. Attachment 101490


2012 F150 FX4 Crew 5.0 3.73

2012Coachman Freedom Express 292BHDS (outdoor Kitchen)
Show me who approves it for use other than ASTM. Which engineering entity and which plumbing code? It must conform to ASTM D-2564, I believe.

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Old 03-09-2016, 07:37 PM   #14
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I'd like to use a studor or oatey. I can use a nipple under the kitchen sink fore sure. The vent under the vanity in the rear bath is tight. There's only a 1/2" from the top of the vent to the bottom of the countertop. Barely enough room to unscrew the vent and get it out. That's why I would like to cut that pipe down alittle but. Nomad, do you think that vent needs to be a certain distance higher than the trap to work properly?


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Old 03-09-2016, 07:37 PM   #15
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Garmford, you can use Oatey all purpose glue and be fine. You do not need to use a mechanical joint. Can be found at any home store.
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Old 03-09-2016, 07:37 PM   #16
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Quote:
Originally Posted by Scubanut View Post
I believe there is a transition glue you can use for abs to pvc. Attachment 101490


2012 F150 FX4 Crew 5.0 3.73

2012Coachman Freedom Express 292BHDS (outdoor Kitchen)
X2!
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Old 03-09-2016, 07:43 PM   #17
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Originally Posted by nomad297 View Post
Ive never seen a female air admittance valve. What you are seeing at the store in the packaging is a female pipe adapter slid over the threads of the male air admittance valve. When you open the package, throw away the female adapter and thread the new male air admittance valve into the female adapter under your sink.

Bruce

You're right Bruce, but the male threaded end is 2". If memory serves me correctly. I bought one while camping last year thinking it was going to be an easy fix. It didn't match up.


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Old 03-09-2016, 08:48 PM   #18
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I'm a plumber had the damp problem. Took the vent out and threaded a cap in worked fine all summer. You will never have enough flow through the sink to cause any problems besides if you do thread it out. Best way to convert from abs to pvc is a rubber coupling.
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Old 03-09-2016, 10:57 PM   #19
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Agree that was going to be my suggestion. Cut pipe down a bit use a Fernco to switch to PVC and install the admittance valve. 15 minute job.
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