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Thread: Studder Valve Usage
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08-01-2007, 05:40 PM #1
Studder Valve Usage
Hi Everyone,
I am a new HI on the system and have a question on the Studder Valves (spelling could be off) . Found some today in a new home but no vent going out the roof. Dont you need at least one vent to the exterior even if you use these valves?
Thanks for responses in advance.
Steve Vance
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08-01-2007, 05:43 PM #2
Re: Studder Valve Usage
Studor Valve.
Yes, to the best of my knowledge, at least one needs to vent to the exterior.
Department of Redundancy Department
http://www.FullCircleInspect.com/
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08-01-2007, 06:48 PM #3
Re: Studder Valve Usage
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08-01-2007, 07:33 PM #4
Re: Studder Valve Usage
I know that Chicago was considering prohibiting AAVs:
"(5) Chapter 9 Vents: Section 917 Air Admittance Valves: Air
Admittance Valves are not permitted. (Air Admittance Valves are a
mechanical devise which if they should fail would allow sewer gas to
enter the building).."
http://www.erie.pa.us/pdf/AGENDA%20F...016%202006.pdf
Anyone know if they are currently allowed, or not?
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08-02-2007, 05:04 AM #5
Re: Studder Valve Usage
Air Admittance Valves are permitted here in Kalamazoo, MI (a kitchen island is a good example of where one may be installed and is allowed).
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08-02-2007, 07:01 AM #6
Re: Studder Valve Usage
While we are on the topic of AAV's be sure that you look to see what color it is. If you find White or Tan AAV's they are OK for use in residental construction. If you find a Black one it is really not an AAV. It is a mechanical vent and they are not allowed in residental construction.
When the AAV fails, it fails in the closed position. When the mechanical vent (the Black type) fail they do so in the open position.
The AAV's also have to be accessible. You can't have one that is sealed up in a wall or out of reach. They fail and will need to be replaced down the road.
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08-27-2007, 11:29 AM #7
Re: Studder Valve Usage
Scott although the mechanical "cheater vents" are black, Ayrlett makes a black ABS AAV. This works the same as the Studor Vent. We see these devices up here in the North West all the time. Check out Ayrlett Air Valve Company LLC.
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08-27-2007, 01:58 PM #8
Re: Studder Valve Usage
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08-27-2007, 02:42 PM #9
Re: Studder Valve Usage
Here's a new one from that site:
"Carefully glue the AAV to the plumbing system using Approved PVC glue on PVC, and ABS glue on ABS Systems. (DO NOT allow excess glue to enter the AAV)"
Those things need to be replaced from time to time and need to be removable.
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08-27-2007, 03:11 PM #10
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08-27-2007, 05:07 PM #11
Re: Studder Valve Usage
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08-27-2007, 06:57 PM #12
Re: Studder Valve Usage
Uhh, Jerry... Line 3. "When using threaded adapter, carefully glue adapter into AAV. (DO NOT allow excess glue to enter AAV). Place Teflon tape on threads. Firmly hand tighten the threaded adapter to AAV."
I thought installation of "studor" valves had to be up as high as they could go. The image in the website indicates 4" above the trap crown. Interesting.
Department of Redundancy Department
http://www.FullCircleInspect.com/
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08-28-2007, 06:21 AM #13
Re: Studder Valve Usage
Gunnar,
Yeah, I saw that, and you saw what I posted, correct?
The part I posted should be removed ... NOT offered as a "choice", because it needs to be removable.
I thought installation of "studor" valves had to be up as high as they could go. The image in the website indicates 4" above the trap crown. Interesting.
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08-28-2007, 09:42 AM #14
Re: Studder Valve Usage
Jerry, as already explained, #3 on the instructions covers the adapter. I never looked at the instructions that closely to be honest. Pretty simple product to use.
As far as the 4" above crown of trap, that is correct by code and ASSE 1051. However these devices work better if they are higher. That way soap suds don't creep up (been there before).
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08-28-2007, 12:03 PM #15
Re: Studder Valve Usage
Scott,
And, as I've "already explained" before, #2 states:" Carefully glue the AAV to the plumbing system "
That's a directive, whereas your #3 is a "when", as in "When using threaded adapter, "
It says to do #2, it gives an option to do #3, if you do #2, #3 is not really an option,m is it?
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08-28-2007, 02:01 PM #16
Re: Studder Valve Usage
First of all I think I have just lost some brain cells trying to understand this. We are professional enough to read the instructions and realize that if using the adapter, then we don't do number 2. However if you check your code, under the IPC I believe it says to install using manufacturers instructions. I would imagine you have many plumbers installing without the adapter; check around.
By the way nice point, if you've already glued on, pretty tough to use that adapter.
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08-28-2007, 06:07 PM #17
Re: Studder Valve Usage
Precisely my points.
With the Studor Vent valves, they state on the valve to use pipe thread tape only (because plumbers were gluing them on when they threaded the Studor Vents in).
The Oatey AAV valves did not say to use any pipe thread tape, so plumbers did not. Of course, though, that left the valves 'not sealed' when installed. I called Oatey a number of years ago (right after their valves hit the market) and asked them if their valves required pipe thread tape, they said yes, why? When I told them that plumbers were installing their valves with no sealant (the tape), the engineer got pissed - he said something to the effect of if they are not using pipe thread tape, then they should not be calling themselves 'plumbers' because 'plumbers' KNOW that all joints must be sealed. He said he would check into adding that to the instructions - I never did follow through later on to see if tape on the threaded joints is now "required" by Oatey.
Some plumbers are either *stupid* or *cheap* ... or ... BOTH!
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08-29-2007, 09:53 AM #18
Re: Studder Valve Usage
Jerry don't get me started on that one. I went to the Studor site and did not see on their instructions to use teflon or anything else. They did say in their instructions to follow the instructions
Oatey says "Use approved pipe joint compound in the threads of the valve".
These differences or lack of instructions could be confusing to some, but the Oatey guy is right in that "real" plumbers should know that all joints must be sealed. We know that there are plenty of plumbers these days that can foul up just about anything though.
Good discussion.
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08-29-2007, 10:38 AM #19
Re: Studder Valve Usage
di-a-gram
Jerry McCarthy
Building Code/ Construction Consultant
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08-29-2007, 08:26 PM #20
Re: Studder Valve Usage
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08-29-2007, 08:39 PM #21
Re: Studder Valve Usage
Scott,
Here is a photo of one (took me a while to dig one up).
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08-30-2007, 01:26 PM #22
Re: Studder Valve Usage
Michael T.
I'm quite sure that our beloved Illinois does not permit AAV's - no how, no way.
Eric Barker, ACI
Lake Barrington, IL
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