Can a double sanitary tee be used horizontally?
Sanitary tees may only be used on drainage piping when transitioning from horizontal (1/4” per foot) to vertical. All others must sweep in direction of flow with proper drainage fittings.
Where would you use a double sanitary tee?
Double Sanitary Tee (Sanitary Cross) – Similar to a cross. This fitting differs from a supply cross fitting in that two of the ports have curved inlets. The fitting has been used in the past for connecting the drains of back to back fixtures (such as back to back bathroom sinks).
Can you use a sanitary tee for venting?
A sanitary tee should be used when connecting a horizontal run, such as a waste arm to a vent stack or vertical riser.
Can you put sanitary tees on your back?
There is much more to plumbing than just having it run downhill. During a home inspection I come upon this little configuration. (Note: There was an improper grade also.) When using sanitary tees they may not be installed on its back with the side opening in a vertical position.
When to use double sanitary tees for plumbing?
Double sanitary tees may be used when the barrel of the fitting is at least two (2) pipe sizes larger than the largest inlet. (pipe sizes recognized for this purpose are 2 in, 2-1/2 in., 3 in., 3-1/2 in., 4 in., 4-1/2 in., 5 in., 6 in., etc.)
When to use a back to back toilet fixture?
A back to back fixture fitting is the proper one. It is “shorter” than a double combo which is usually desirable when the two are directly back to back, when the combo might require the bends to be further out than a 12″ rough. i guess it depends on what else is happening in the 2 bathrooms.
Can a back to back fitting be used for a double fixture?
It can happen with a back to back fitting also if the cable is very stiff. It will hit the slope of the other side and then make the gradual turn to go upwards. The IPC is a cost driven code, and since a double fixture fitting costs more than a cross, the cross will be allowed even if it does cause operational problems later.
