What size trap shall be used for bathtub drains?

1 1/2 inches
The proper size for both a bathtub drain and trap is 1 1/2 inches in diameter, regardless of the bathtub size. The type of trap used on a tub drain is a p-trap. Because they are the same size, the trap will glue directly onto the PVC drain pipe without the use of adaptors or fittings.

Can I use 1.5 inch pipe for shower drain?

Current plumbing codes (IPC as well as MA Plumbing Code 248 CMR 10 for instance) need 1.5 inches to drain for a tub with a shower. The tub can drain at leisure and the shower function when in utilize, with flow-limiting showerheads, fall within the flow rate that a 1.5” drain can handle.

What size pipe should a tub drain be?

For a bathtub drain pipe, the correct size is almost always a minimum of 1 1/2 inches, as set by code. However, in other areas, codes set the minimum tub drain pipe size at 2 inches.

Can you use a 1 1 2-inch pipe for shower drain?

As the plumbing engineers pointed out, a 1 1/2 in. shower drain pitched 1/4 in. per ft., flowing half full, will accommodate 4.9 gpm with the roughest piping material, which happens to be cast iron. If you use PVC, the flow rate at half full flow increases to 8.3 gpm.

How far can P-trap be from tub drain?

Maximum Distance According to the International Residential Code, the maximum vertical distance between the sink drain and the entrance to the p-trap is 24 inches.

Does a bathtub drain need a trap?

Yes, you should always install a P-Trap as part of the plumbing of a bathtub or any other wastewater drain system. Failure to include a P-Trap could result in foul smells, harmful gases, and small animals entering through your tub’s drain.

What size pipe do I need for shower drain?

2-inch
Keep in mind that shower drain assemblies are generally made to fit a 2-inch drainpipe, not the 1 1/2-inch pipe usually found on tubs. A 2-inch pipe is the recommended size because showers have a low threshold for flooding, and a 2-inch pipe helps the water drain faster than does a 1 1/2-inch pipe.

Does a tub drain need AP Trap?

P-traps are S-shaped pipe components that keep toxic sewer gases from escaping into your residence. They are required on all plumbing fixtures, including sinks, tubs and showers. A bathtub trap begins at the end of the tub drain assembly, where it is glued onto a fitting screwed to the drain outlet.

What is code for shower drain size?

11/2 inches
Shower drains shall have an outlet size of not less than 11/2 inches (38 mm) in diameter.

Does a tub drain need AP trap?

How far below the shower drain does the p-trap have to be?

24 inches
According to the International Residential Code, the maximum vertical distance between the sink drain and the entrance to the p-trap is 24 inches.