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Vent question (1 Viewer)

Mandy_P

Auditioning
Joined
Dec 2, 2003
Messages
7
Hello Everyone,

Trying to build a box for my av12. It will be an 85 liter ported. I put the values into winisd and came back with a 4" pipe 20 inches long. I thought it was a little big but went with it anyway. I ordered a 4" flared tube from PE and got a piece of 4" PVC from the depot. Murphy must have stopped by the house, cause of course the pvc and the PE tube don't match. Is the Winisd info correct and if so what do I do for a 20" pipe? I already cut out the hole otherwise I would be tempted to skip on the flared fitting.

Any suggestions would be greatly appreciated.
 

Cam McFarland

Supporting Actor
Joined
Feb 6, 2004
Messages
699
It was always my understanding that PVC pipe would fit the flares.
I would take the flare down with me check it against all the plastic pipe they have.

just a thought...
 

Mandy_P

Auditioning
Joined
Dec 2, 2003
Messages
7
They definetely don't fit, at least not with the piece I got from the depot. I'll have to go back and see what I find.

I cut a new front piece, so I'm now ready for alternatives.

Thanks,
 

Patrick Sun

Senior HTF Member
Joined
Jun 30, 1999
Messages
39,411
I wasn't aware of flared port kits that were compatible with thick PVC pipes. Most flared port kits come with a thin center plastic tube section that are mated on each end with flared molded plastic.

If you do use flared ports, and the required non-flared port length is determined to be 20", then the total end-to-end length using flared ports should be 1" longer, i.e. 21" long from end-to-end. So if the flared ends contribute, say, 3" on each flared end, that's 6" subtracted from 21" to arrive at a center tube section length of 15" required.
 

Mandy_P

Auditioning
Joined
Dec 2, 2003
Messages
7
Actually it wasn't a kit, it was a just a flared port. I thought a standard pcv pipe would fit and it doesn't. Tomorrow I'll go by the depot again and see what I can come up with. Is 4" about right for this setup?

Thanks,
 

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