What size pipe should I use for a shower?

2-inch pipe

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 shower need 3/4 PEX?

Most fixtures (sink, toilet, tub, shower) don’t need 3/4 all the way, but it is not forbidden or bad to do so. When branching off, you can use a PEX Tee fitting that also reduces. You can branch off at 1/2 at each fixture, and continue with 3/4 until the next branch off.

Whats better 1 2 or 3 4 water line?

Running 3/4″ piping from the 1/2″ feed will slightly decrease the pressure loss, meaning you’ll get more pressure at your fixtures, but the difference will probably be very small. Most of the pressure loss will have already occurred in the 1/2″ line before it reaches your house.

What size PEX should I run to my shower?

Sinks and showers are water guzzlers, and you can conserve by running 3/8-inch lines to them. Because the rate at which a commode tank refills is usually not important, it’s okay to run 3/8-inch line there as well.

How many fixtures can 3/4 water line supply?


For our example, our 1-inch pipe can have up to 30 fixture units, our 3/4-inch can have up to 14, and our 1/2-inch can have up to 4.

How many fixtures does a 1/2 water line have?

Including minimum fixture branch pipe sizes

Individual fixtures Minimum fixture outlet pipe size Number of units
Laundry sink 1/2 inch 1.5
Lavatory (wash basin) 1/2 inch 1.0
Shower (per head) 1/2 inch 2.0
Water closet, 1.6 GPF gravity tank 1/2 inch 2.5

Can you run PEX to a shower head?

Use threaded PEX water line fittings for shower valves. Tighten the fittings before crimping the PEX water line. A plastic bracket forms the sharpest 90-degree angle permitted for this brand of PEX.

Can you use 3/4 PEX tub spout?

1. Use a 3/4″ PEX crimp to 1/2″ FIP adapter at the valve and a 3/4″ PEX crimp to 1/2″ FIP drop-ear elbow to hold the tub spout (with 3/4″ PEX between them, of course). 2. Use the Sharkbite Shower/Tub Installation Kit, which push-connects onto 1/2″ hard copper between the valve and the spout.

What is standard water pipe size in residential?

The most common pipe diameter for water mains is 6 to 16 inches, with 8, 10, and 12 inches also being used. Branch lines providing service to individual homes, offices, buildings, and businesses vary in size from as small as half an inch in diameter up to 6 inches.

Is PEX a better than PEX B?

Bottom line, PEX A is more resistant to burst pressure than PEX B. PEX A’s expansive material can handle up to 500 PSI, which makes it reliable in extremely cold temperatures. Since PEX B is a more rigid material, it will not hold up as well in similar situations.

Can PEX be used for main water line?

It is important to ensure the PEX pipe you’re using for the main pipeline is listed and approved for water service. Be sure to check local code and the markings on the pipe to ensure this approval. Some manufacturers also offer direct connections to the water meter.

What size water line do I need?

In the case of a three family house an 1 1/2″ service line is typically required. Again the exception would be if the length of the run of pipe was only 35′ or less. In most cases a six family house or greater will require a 2″ water service line.

Does reducing pipe size increase water pressure?

In water flowing pipeline, pipe size and water pressure are dependent on each other. Because if the diameter of a pipe decreased, then the pressure in the pipeline will increase. As per Bernoulli’s theorem, pressure can be reduced when the area of conveyance is reduced.

Is 3/4 water line big enough?

3/4 supply is good for most houses. If you have low pressure with taps on 3/4 may be small. If you have big house with many lavatories and people 3/4 may be small.

Does increasing pipe diameter increase water pressure?

So, will bigger pipes increase water pressure? The short answer: yes and no. Larger pipes will increase the amount of potential water flowing through the line. However, if the water isn’t up to that necessary flow rate, it won’t increase water pressure.

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 is code for shower drain?

While a shower usually requires a 2-inch drain pipe, the vent pipe must be either 1 1/2 inches or 2 inches depending on local requirements. Be sure to double check this to see what the code is in your area.

What is standard drain pipe size?

The most common sizes you’d use around your home would be 1½-, 2wo-, three- and four-inch. The 1½-inch size is used to capture water that might flow out of a kitchen sink, a bathroom vanity or a tub.

What size is bathtub drain pipe?

According to Bonnets Stems and Accessories, Inc., a standard modern bathtub drain is 1 1/2 inches in diameter – the width straight across the middle. Rough-in plumbing should be calculated for a 1 1/2-inch pipe.

How many GPM can a 1 1 2 drain handle?

A 1 1/2 in. drain can easily accommodate 4.9 gpm for cast iron and 8.3 gpm for PVC. While the flush typically occurs within 12 seconds, the flow levels out quickly in the drain.

What is code for a bathtub drain?

Bathtubs shall be equipped with a waste outlet that is not less than 11/2 inches (38 mm) in diameter. The waste outlet shall be equipped with a water-tight stopper.

Can a shower and toilet share the same drain?

The general answer is that the showers and toilets can use the same drain, but they should not be sharing the same waste trap arm. There are other factors to consider as well, such as whether your drains lead to the main sewer line, or if there are septic tanks that are used in your city or town.

What happens if you poop in the shower drain?

The more bends and junctions there are in the shower drain, the higher the chance of a blockage occurring. If this does happen, it is likely a foul odour will be coming from the shower drain, as well as drainage issues. ‘

Is it okay if poop goes down the shower drain?

While your toilet is made to handle poop disposal, your bathtub drain is not. If solid or clumpy matter accidentally goes down the drain, it may cause a blockage. If this happens, hiring a plumber is the best solution.