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What is a stub out fitting?

Author

Matthew Martinez

Updated on March 02, 2026

What is a stub out fitting?

The plumbing stub-outs are the end result of the rough-in phase of plumbing a residential or commercial building. They are usually installed while the walls are still uncovered; and after the drywall work and painting is complete, a plumber comes back and hooks them up to the plumbing fixtures.

Keeping this in consideration, what is a stub out used for?

Stub out elbows are primarily used when installing PEX pipe to stub out of the wall and allow for further connection of outlet stop valves and plumbing fixtures. Stub out elbows with ears can be nailed to a wooden surface, such as a stud.

Beside above, how far should stub be from sink? Wall DrainsLike the supply stub-outs, the drain stub-out extends from a fitting -- usually a sanitary tee -- to a point 3 or 4 inches beyond the wall.

Regarding this, what is stub in?

A method stub or simply stub in software development is a piece of code used to stand in for some other programming functionality. A stub may simulate the behavior of existing code (such as a procedure on a remote machine, such methods are often called mocks) or be a temporary substitute for yet-to-be-developed code.

What is a stub pipe?

For "stub in," the stub or branch pipe extends to the inside of the main pipe. The hole in the main pipe is (usually) beveled to allow for a full-penetration weld. For "stub on," the stub extends only to the outside of the main pipe. The stub may be beveled, but if not only a fillet weld can be done. "

How far should a stub out extend through a finished wall?

Wall Drains
Like the supply stub-outs, the drain stub-out extends from a fitting -- usually a sanitary tee -- to a point 3 or 4 inches beyond the wall. The drain, which is usually 2-inch plastic pipe, maintains a minimum slope of 1/4 inch per foot from the stub-out to the point where it ties into a main waste pipe.

How long should stub outs be?

Wall Drains
Like the supply stub-outs, the drain stub-out extends from a fitting -- usually a sanitary tee -- to a point 3 or 4 inches beyond the wall.

Is 1 2 PEX big enough for shower?

Pressure Drop Considerations
In general, the greater the distance from the manifold to the fixture, the wider the PEX tubing should be. A 3/8-inch line is sufficient for lengths up to 250 feet; 1/2-inch line will deliver adequate water pressure up to 350 feet; and 3/4-inch tubing is necessary to run a 500-foot line.

Can I use PEX for shower?

Fittings for a Shower Valve
Use threaded PEX water line fittings for shower valves. A plastic bracket forms the sharpest 90-degree angle permitted for this brand of PEX.

Can I run 3 4 PEX to shower?

There's nothing wrong with upsizing your bathroom run to 3/4", but 1/2" should work fine. Remember your sink and toilet are connected through a 3/8" valve and flexible pipe anyway. And the newer temperature/pressure balancing shower faucets eliminate a lot of the cold/hot showers people used to have.

How do you do plumbing with PEX pipe?

It's pretty simple to use PEX. SharkBite recommends crimp rings be 1/8" to 1/4" from the end of the PEX. Slide your crimp ring over the PEX then the fitting into the pipe. Use your crimper at a 90 degree angle to the PEX and compress the crimp ring.

Why can't you use PEX for tub spout drop?

The tub spout can be copper, brass, or galvanized pipe. You cannot use pex because the pipe coming out of the valve needs to be able to support the weight of the tub spout and handle the abuse of pulling/ pushing down of the divirter built into the spout.

How do you stub a cigarette?

When someone stubs out a cigarette, they put it out by pressing it against something hard. Drag the correct answer into the box.

What is an electrical stub?

In microwave and radio-frequency engineering, a stub or resonant stub is a length of transmission line or waveguide that is connected at one end only. Stubs are commonly used in antenna impedance matching circuits, frequency selective filters, and resonant circuits for UHF electronic oscillators and RF amplifiers.

What is a stub class?

A stub is a class supposed to return data from its methods and functions. The return value is hard-coded. Stubs are used inside unit tests when we are testing that a class or method delivers expected output for a known input. The stub does nothing more or less than returning the value that we need for the test.

What is the difference between mock and stub?

Stub: Stub is an object that holds predefined data and uses it to answer calls during tests. Mocks: Mocks are objects that register calls they receive. In test assertion, we can verify on Mocks that all expected actions were performed.

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