proper p trap orientation/flow direction?

Users who are viewing this thread

McEnzo

Member
Messages
31
Reaction score
0
Points
6
Location
Montreal
I've searched here and on the internet but have found contradicting information compared to available p-traps for sale. So which side really connects to the drain and which to the j-pipe/waste pipe?
 

Attachments

  • 1522499326938.jpg
    1522499326938.jpg
    74.3 KB · Views: 5,962
  • 20180329_164524.jpg
    20180329_164524.jpg
    48.8 KB · Views: 9,298

Reach4

Well-Known Member
Messages
38,795
Reaction score
4,413
Points
113
Location
IL

McEnzo

Member
Messages
31
Reaction score
0
Points
6
Location
Montreal

McEnzo

Member
Messages
31
Reaction score
0
Points
6
Location
Montreal
Looking at the p trap that is not glue-together, the sweep is on the drain side, but look at the image i uploaded, the height to the j-bend does not apply in my case since one side of the p trap is not higher than the other. I just to know if the p trap flows better one way or the other?
 

Attachments

  • Screenshot_2018-03-31-09-12-20-1.jpg
    Screenshot_2018-03-31-09-12-20-1.jpg
    92.5 KB · Views: 34,313

McEnzo

Member
Messages
31
Reaction score
0
Points
6
Location
Montreal
[
Or in this picture we can clearly see that the sweeping part is on the j bend side and there's no way this could be backwards since one side is definitely higher than the other.
 

Attachments

  • Screenshot_2018-03-31-09-36-15-1.jpg
    Screenshot_2018-03-31-09-36-15-1.jpg
    66.1 KB · Views: 8,299

Reach4

Well-Known Member
Messages
38,795
Reaction score
4,413
Points
113
Location
IL
Looking at the p trap that is not glue-together, the sweep is on the drain side, but look at the image i uploaded, the height to the j-bend does not apply in my case since one side of the p trap is not higher than the other. I just to know if the p trap flows better one way or the other?
Now you are throwing something else in. Will a deeper water seal flow worse or better than a shallower water seal? Neglecting the water seal depth thing, the top one would flow faster. But it will be a small and probably unnoticeable difference.

Or in this picture we can clearly see that the sweeping part is on the j bend side and there's no way this could be backwards since one side is definitely higher than the other.
I may be missing your point on this one. Were you saying that the asymmetry on the disposal picture trap was as intended? Yep. That is the deal with the brachistochrone curve curve thing. https://en.wikipedia.org/wiki/Brachistochrone_curve Still, a symmetrical trap or even backwards curve will drain fine. Using one backwards from the design curve will not violate code and it will still drain water well in practice.
 

McEnzo

Member
Messages
31
Reaction score
0
Points
6
Location
Montreal
You got my point exactly, the water seal height will be not applicable, it's all a question of which side goes on the drain side, steep angle or sweeping? Clearer picture attached.
 

Attachments

  • 20180331_101728.jpg
    20180331_101728.jpg
    38.7 KB · Views: 5,983

Reach4

Well-Known Member
Messages
38,795
Reaction score
4,413
Points
113
Location
IL
You got my point exactly, the water seal height will be not applicable, it's all a question of which side goes on the drain side, steep angle or sweeping? Clearer picture attached.
Steep ideally, presuming you mean the input side as the drain side.
 
Top
Hey, wait a minute.

This is awkward, but...

It looks like you're using an ad blocker. We get it, but (1) terrylove.com can't live without ads, and (2) ad blockers can cause issues with videos and comments. If you'd like to support the site, please allow ads.

If any particular ad is your REASON for blocking ads, please let us know. We might be able to do something about it. Thanks.
I've Disabled AdBlock    No Thanks