Old 3.5 gallon toilets and why they clog

Users who are viewing this thread

Terry

The Plumbing Wizard
Staff member
Messages
29,946
Reaction score
3,460
Points
113
Location
Bothell, Washington
Website
terrylove.com
Old 3.5 gallon toilets and why they clog.
One reason are bowls like this.
Notice that it's not designed to siphon really well.

And then notice the shelf on the floor side, and where they cut the outlet. You would be surprised to know how many times these are pulled an something long has slide right past the hole and lodged beyond it.
Dooh!

toilet_cut_3_5.jpg
 

SamC

Member
Messages
149
Reaction score
0
Points
16
Location
Georgia
Thanks Terry. That cutaway makes other improvements in modern designs for squeezing more power out of less water very evident. Back then the siphon jet was plumbed off the front of the rim, making that long trip, and losing pressure all the way. Many modern siphon jet designs are fed directly from the input to the bowl, with one or two tubes running along the outside for higher pressure at the jet. Notice also the sharp right angle turns at the beginning of the trapway and the end of the siphon jet tube, rather than the smooth sweeps used now.
 
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