Water line sizing to shower/tub

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I'm working on improvising a shower to add to our existing clawfoot tub. It's just going to be the piping supported to the wall for now as we're going to redo this bathroom a year or so down the road.

Tub faucet http://www.vintagetub.com/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/R/M/xRM030P-CP-S.jpg.pagespeed.ic.LOyuGDd99e.jpg

Our tub faucet looks something like this and has no way to add on a shower to it, and the faucets with the showers cost a ton to add. So, since it's temporary, I'm going to T off of the supply lines after the valve. However, I don't know much of why the tub would be piped how it is.

The supply line comes out of the floor at a 1/2" and then into the valve and out at 3/8". I know this is done for sinks and such, but I don't know why or why they didn't use a 1/2" to 1/2" valve instead?

It comes out at 3/8" and goes through a short 3/8" copper line and then into the back of the tub. The 3/8" copper line is...

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by

TFK

Last Updated February 16, 2016 16:09 PM

I'm working on improvising a shower to add to our existing clawfoot tub. It's just going to be the piping supported to the wall for now as we're going to redo this bathroom a year or so down the road.

Our tub faucet looks something like this and has no way to add on a shower to it, and the faucets with the showers cost a ton to add. So, since it's temporary, I'm going to T off of the supply lines after the valve. However, I don't know much of why the tub would be piped how it is.

The supply line comes out of the floor at a 1/2" and then into the valve and out at 3/8". I know this is done for sinks and such, but I don't know why or why they didn't use a 1/2" to 1/2" valve instead?

It comes out at 3/8" and goes through a short 3/8" copper line and then into the back of the tub. The 3/8" copper line is screwed into a (reversed?) 3/8" to 1/2" reducer. Then this was screwed into a (reversed?)...

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[Summary]What size PVC should I choose to supply water to my shower? Building a new bathroom and wondering what size PVC pipe to run to my shower supply. plumbing For copper pipe, hot (~50 C) water should only flow at approx 5 ft/second. Flow of less than one

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What size PVC should I choose to supply water to my shower?


Building a new bathroom and wondering what size PVC pipe to run to my shower supply.

plumbing

For copper pipe, hot (~50 C) water should only flow at approx 5 ft/second. Flow of less than one or two ft/sec can also be a problem. Based on the diameter of the pipe (1/2 in type L), 0.72 gpm flows at 1.0 ft/second, so this would suggest a maximum of 3.6 gpm for the pipe (assuming 5 ft/second). Also, you must worry about the pressure drop. Use table 6 of The copper Handbook, at 5 gpm, the pressure loss is 0.161 psi/ft. Assuming your supply is 50 psi, and you need 35 psi to be delivered to...

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When your bathtub or shower surfaces go bad, all-out replacement appears to be your only hope. And while nothing can compare to the quality of full replacement, there are intermediate solutions that are less expensive, faster, and cleaner that may satisfy your needs.

Acrylic liners for bathtubs and showers promise just such a solution to a decrepit tub or shower. However, as with any other cover-up, this fix comes at a price.

What Are Liners?

Bathtub liners and bathtub refinishing are two methods of covering up your bathtub, shower pan, and walls.

Liners are solid pieces that are installed over your existing tub or shower; nothing is removed. By contrast, refinishing is sprayed on epoxy paint.

Liner Construction

Liners are made of acrylic, the same material that composes new, pre-fabricated bath and shower stalls. While the acrylic is heavy gauge, it is not as thick as acrylic used for bathtubs and shower stalls.

Separate...

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Water lines under your sink lead into your faucets and fixtures. These pipe sizes vary based on the type of faucet installed. Standardised sizes for each fixture are available and if you plan to install your own water lines, you should familiarise yourself with them.

Kitchen Faucets

A kitchen faucet water line is 1/2 inches in diameter. This 1/2-inch pipe supplies the water for the faucet from the home's main water line. Two water lines are present under your sink at the kitchen faucet -- one is for the hot water the other is for the cold water. Both lines connect to supply tubing that runs up to the base of the faucet. The kitchen drain pipe running from the sink basin to the home's drainage line is 1.5 inches in most cases.

Bathroom Faucets

A bathroom faucet has the same water line pipe size as a kitchen faucet; it is 1/2-inch pipe. Usually, this pipe is the exact same type of pipe running to the kitchen. Both bathrooms and kitchens use copper pipes...

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I am hooking up water lines to a shower that I am remodeling.

Prior to the remodel:
there is a 3/4" water line (in the crawl space) extending up to the area near the tub/shower, it then downsize to a 1/2 inch pipe that goes up into the bathroom and splits into one pipe for the shower and one pipe for the bathtub.

I am planning on making a new shower that will have 2 shower heads, each with their own mixer and on/off valve.

I am also planning on using CPVC.

I have the option of staing with the 1/2 inch that is already running up to the shower and just put another "Y" in it to bring water to the new shower head (with its own on/off valve and mixer). I'm not sure if I there will be enough flow through this system to run both showers at the same time. The water will flow to right up near the shower in 3/4", then down-size to 1/2" copper, then down-size to 1/2"CPVC for the two showers.

The other way that this could be done would be to make the whole...

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There are 2 answerers here that had it close. But they also were not exactly right.

The amount of water provided to a standard tub and shower valve is supplied by *2* 1/2" copper (or plastic) water lines, whether it comes out of the unit for the tub or shower it is fed at the same rate to the unit.

The only difference between the 2 is when it runs from the valve through the shower it can pass through weither a low-flow (WaterSaver) showerhead that restricts the flow to 2.5 gallons per minute. WITHOUT the low-flow head the water runs at a general rate of 8 gallons per minute.

The tub is usually about 30-50 gallons capacity as stated, and this would mean that an unrestricted showerhead would supply enough water to fill the tub in approximately 4 - 6.5 minutes. It flows at the same rate through the tub spout, but that doesn't matter for this question.

The best way to find some materials for the class toi use would be some manuals for tubs and showers from sites...

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Before you Begin: Run Pipe and Choose Faucet

Before you begin, you'll want to install separate 3/4-inch lines to supply the shower. This extra step ensures good water pressure and protects the bather from temperature changes when another faucet is turned on or the toilet tank refills. You'll want to tap into the cold and hot water lines as close to the water heater as possible. If needed, move a stud to make room for the plumbing behind the tub.

You'll also want to choose the tub or shower faucet you're going to install. Follow the manufacturer's directions for plumbing the faucet. And, if your faucet does not have integrated shutoff valves, install shutoff valves in the lines to the valve. For optimal comfort, position the faucet about 28 inches above the floor for a tub, and about 48 inches for a shower.

Leftover Pipes? Craft this Cute Side Table

Before you run pipes, choose the tub or shower faucet you're going to install. You'll want to follow the...

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Interested in Purchasing a Tankless Water Heater?

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The suggested list price for our water heaters tends to range between $900 - $1,995 depending on the model. These prices do not include installation or venting. For a more...

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(Valley Forge, Pa.) – CertainTeed Corporation is announcing the availability of an independent life cycle assessment (LCA) for its Restoration Millwork® exterior product line, becoming the first and only cellular polyvinyl chloride (PVC) exterior trim manufacturer to do so. Published through the Building for Environmental and Economic Sustainability (BEES) program, the LCA and the use of pre- and post-consumer recycled content makes Restoration Millwork an ideal choice for green building projects, contributing points for LEED® certification.

Administered by Sustainable Solutions Corporation of Royersford, Pa., the LCA included a cradle-to-grave review of raw material acquisition, manufacturing, transportation and distribution, installation, use, maintenance and end-of-life recycling and final disposal. To provide full transparency and availability, the LCA was submitted to the BEES database for independent review and publication.

"With the completion of the...

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