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what does no hub mean in plumbing

by Christiana Herman Published 3 years ago Updated 3 years ago

What does no hub mean in plumbing? A no-hub drain has a lower end that is the same diameter as the drain pipe beneath it. This is essentially a short wide section of pipe that slips over both the end of the drain and the end of the drain pipe, connecting them together. O-clamps are often used to tighten the grip of the connector on the pipes.

Intended for use with DWV systems
DWV systems
The venting system, or plumbing vents, consists of a number of pipes leading from waste pipes to the outdoors, usually through the roof. Vents provide a means to release sewer gases outside instead of inside the house.
https://en.wikipedia.org › wiki › Drain-waste-vent_system
, no-hub couplings are used to join cast iron soil pipe that does not have the traditional Hub and Spigot. They are normally installed using a torque wrench. Generally, they have more clamps and provide a greater band load than standard no-hub couplings.

Full Answer

What does no hub connection mean?

With this system, you are really just using someone else's hub over the internet or "in the cloud" as many manufacturers like to say. The most important take away is that in most cases, "no hub" just means that you are using a hub that is provided to you in the cloud.

What is the hub that is used in pipe fittings?

  • Elbows – for making angle turns in piping.
  • Nipples – for making close connections. They are threaded on both ends with the close nipple threaded for its entire length.
  • Couplings – for connecting two pieces of pipe of the same size in a straight line.
  • Unions – for providin

How to connect PVC pipe without glue?

How To Connect PVC Pipe Without Glue? [5 Different Ways] Method 1 of 5: Inner Tubing. Step 1: Cut Off The Tubing. Step 2: Stretch The Tape Over The Pipe. Method 2 of 5: Gorilla-Tape Strip. Step 1: Cut The Tape. Step 2: Fit On The Inner Rim. Step 3: Push To Fit. Method 3 of 5: Threaded Pipes.

What is no hub soil pipe?

No-Hub Pipe & Fittings. ASTM 888: Specification for Hubless cast iron soil pipe and fittings for sanitary and storm drain, waste, and vent application Scope: This specification covers hubless cast iron pipe and fittings used in sanitary drain, waste, and vent (DWV), sewer, and storm drainage applications. This system is intended for use in nonpressure applications.

What does "no hub" mean in plumbing?

What is a no hub roof drain?

What is a no hub coupling?

What is hub in LAN?

See more

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What is a hub connection in plumbing?

As previously stated, the hub of the pipe is the female "bell" end of the pipe, which leaves the male end of the pipe the no-hub end. The no-hub connection option is probably the most used by nonprofessionals due to the ease of installation. All that is needed is a no-hub coupling to attach the drain to the pipe.Apr 20, 2020

What is no hub piping?

Hubless pipe and fittings are also referred to in the plumbing industry as no-hub. Hubless cast iron soil pipe and fittings are manufactured without a hub, in compliance with CISPI 301.

What does no hub outlet mean?

This type of outlet is the opposite of the hub outlet. SPIGOT OUTLET (NO HUB OUTLET): Male, pipe size, plain end connection for caulking into a soil pipe hub or joining to plain end pipe with a mechanical coupling.

Why is it called a no hub coupling?

0:361:59What Are "No-Hub Couplings" - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo these no hub couplings have this inner neoprene gasket with little stoppers for the pipe on theMoreSo these no hub couplings have this inner neoprene gasket with little stoppers for the pipe on the inside. And it's very simple the gasket just goes over one pipe. Then you connect the other.

Can I use a no-hub coupling on PVC?

Although no-hub couplings were designed for cast iron they are also a very handy way to repair ABS or PVC. They can be especially helpful when the piping is in a hard to reach spot or the pipe is unable to be moved in either direction to allow the repair to be made with a solvent (glue-on) coupling.

Can no-hub couplings be used underground?

Underground Installations Q: Can I use hubless cast iron soil pipe and fittings below ground, and is there anything special I need to do to protect the couplings? A: Hubless cast iron soil pipe and fittings are allowed for underground installations by all of the model codes.

How do I connect no hub floor drain?

The most widely used connection. A No-Hub connection is achieved by butting No Hub soil pipe or plastic pipe to the bottom of the drain and securing it with a NO HUB coupling. (MI-HUB and MI-XHUB no hub couplings are available from MIFAB - see page 121).

What is a hub fitting?

Hub – a type of DWV fitting end that allows pipe to slide into the end.Aug 19, 2013

What are plastic drain pipes made from?

Most domestic drainage pipes are now made from plastic, or PVC-U to use the proper term. PVC-U pipes are lighter and easier to handle than traditional clay drains. Clay drainage is still used on some commercial installations. Plastic drainage pipes can be either plain ended or socketed on one end.

How do I install no hub coupling?

0:364:53Anaco Husky Tutorial for No-Hub Coupling Installation - YouTubeYouTubeStart of suggested clipEnd of suggested clipThe first step in installing couplings is to slide the gasket over the pipe or fitting. Making sureMoreThe first step in installing couplings is to slide the gasket over the pipe or fitting. Making sure it goes on straight position the center of the gasket over the joint. So it's evenly distributed.

How much pressure can a no hub coupling hold?

The Anaco standard no-hub couplings conform to CISPI 310 & ASTM C 1277. The specified test pressure in the standards are 20 psi for 1 ½” – 5”, 18 psi for 6”, 10 psi for 8”, 6 psi for 10”, 12” and 15”.

The History of No-Hub Couplings

No-hub couplings revolutionized cast iron drainage pipe installations from a hazardous, tedious, skilled craftsman trade, to a simpler, quicker, le...

When, Where, and Why You Might Need A No-Hub Coupling

Cast iron piping is still used in most commercial buildings like hospitals, hotels, vehicle dealerships, banks, office buildings, schools, lube sho...

How to Install A No-Hub Coupling

No-Hub couplings have an inner gasket made of a synthetic rubber compound, polychloroprene (neoprene). The inner gasket is surrounded by an outer s...

Not to Be Confused with...

No-Hub Couplings are often confused with Flexible Rubber couplings which are a much thicker walled rubber coupling with two stainless steel clamps...

No-hub vs hub and spigot cast iron - RIDGID Forum | Plumbing ...

Re: No-hub vs hub and spigot cast iron basically the way the pipe and fittings are joined are the difference. stick with no hub as it's banded and all you need is a nut driver and 60 inch pound torque wrench.

Hub drain vs. Floor drain - Ask Me Help Desk

A Case Drain Line Is a line from a pumps cavity to a low pressure storage tank. Basically a hub drain is a round drain that is completely open, no basket strainer or drain cover.

What your code says you can do with fernco's, no...

What does your code say about the following: Fernco Flex Couplings, No hub couplings and shielded couplings. Are they: -Permitted underground? -Permitted above ground? -If permitted above ground, are you permitted to conceal in wall/ceiling? As we all know. Every dang city, state or...

No Hub Couplings vs. Flexible Couplings: What’s The Difference?

No hub couplings differ from flexible couplings in the thickness, strength, and protection of the coupling materials. Most flexible couplings work in above-ground plumbing installations where stress is at a minimum.

What is a no hub coupling?

No-Hub Couplings are often confused with Flexible Rubber couplings which are a much thicker walled rubber coupling with two stainless steel clamps but do not normally include a stainless steel shield. As defined in the Uniform Plumbing Code section 705.4.2. a mechanical joint shielded coupling for hubless cast-iron pipe and fittings shall have a metallic shield where installed aboveground. Flexible rubber couplings with stainless steel clamps, without a shield, are designed for use below ground.

When did no hub couplings become available?

In the 1960's No-Hub Couplings were the next best plumbing innovation to hit the market and transformed cast iron drainage pipe installations. This happened just before plastic piping became available and acceptable in the plumbing industry and transformed the industry all over again. In this article we hope to provide you not only a brief history but also useful information regarding the versatility of no-hub couplings and their ability to be used for plastic piping as well.

What was used to connect cast iron piping to a hub?

Before no-hub couplings were invented, hub and spigot cast iron piping would be connected into fittings with hubs or bells by using lead, oakum, melting pots, burners, special clamps, cast iron ladles, joint runners and caulking irons.

Can you use a no hub coupling on cast iron?

Although no-hub couplings were designed for cast iron they are also a very handy way to repair ABS or PVC. They can be especially helpful when the piping is in a hard to reach spot or the pipe is unable to be moved in either direction to allow the repair to be made with a solvent (glue-on) coupling. The pipe can be cut to remove the damaged area and a no- hub coupling can be installed along with the replacement piping.

Can ABS pipes be used in commercial buildings?

Some codes limit plastic piping to no more than two story buildings.

Can you use a no hub coupling to connect ABS to PVC?

However, if you are using a no-hub coupling to connect 3" or 4" cast iron to ABS or PVC then you will notice a more defined difference between the outside diameters of the cast iron and the ABS or PVC pipe.

What is the hub of a pipe?

As previously stated, the hub of the pipe is the female "bell" end of the pipe, which leaves the male end of the pipe the no-hub end. The no-hub connection option is probably the most used by nonprofessionals due to the ease of installation. All that is needed is a no-hub coupling to attach the drain to the pipe.

What is a hub drain?

The best way to explain a hub drain is to address which part of the pipe the hub is. Each pipe has female and male ends, and the female end of the pipe is the wide connector end, which is why their distinctive shape is often referred to as a bell. Advertisement. Hub drains are usually easy to install because the diameter of the inner part ...

What to do if you have doubts about plumber?

If you ever have doubts about your selection or about your situation, consider calling a plumber who will be able to assess the situation and help you make the right choice.

What is a no hub drain?

A no-hub drain has a lower end that is the same diameter as the drain pipe beneath it. This is essentially a short wide section of pipe that slips over both the end of the drain and the end of the drain pipe, connecting them together. O-clamps are often used to tighten the grip of the connector on the pipes.

What is a NIBCO 3 in. PVC DWV?

The NIBCO 3 in. PVC DWV Soil Pipe Hub x No Hub Adapter is used in a non-pressurized sanitary system which removes water-borne waste from plumbing and appliances. It adapts PVC piping to cast iron using cement and clamp or rubber sleeve.

What does "no hub" mean?

The most important take away is that in most cases, "no hub" just means that you are using a hub that is provided to you in the cloud. Hubless flow.

What does "not hub required" mean?

What does not hub required mean though? Quite simply, it means that the device does not require a smart hub to operate. There's a lot more to consider when deciding what kind of products you will be using in your smart home though, such as how they make it work without a hub or if hubless is even a good thing.

What is a smart hub?

A smart hub is a central controller that is in charge of sending commands to every smart device in the home. It will usually also receive periodic status updates when things like light switches are manually toggled. It's with these incoming updates and outgoing commands that we can configure automations to turn on the lamp when someone turns on the main light, as an example. The software that you use to set up those automations will also run on the hub and be saved in its local storage.

What are the two types of no hub products?

The two classic types of no hub products. There are two kinds of products that will be sold as "no hub required", WiFi-based devices and Bluetooth-based ones .

Is hubless smart home good?

Generally, I would recommend hubless smart products only to those who are brand new to the whole ecosystem. It's a great way to explore your interest in smart home technology without spending thousands of dollars, but it does come with a lot of drawbacks that must be considered. It is for those reasons that I would not recommend a hubless system for a permanent installation or any situation where the entire home is going to be automated. A system like HomeKit, SmartThings, and even the DIY platforms like Home Assistant will serve you much better in large scale applications.

Can a computer be a hub?

In reality, any computer could do the job of a hub, the difference is usually that commercial hubs will have extra hardware designed to make the experience seamless. An example is the inclusion of a wireless antenna for either Z-Wave or Zigbee, which would otherwise be difficult to get on a regular computer.

Is the lack of a hub a good thing?

After exploring all the different aspects of no-hub smart devices, there is one real question left: are hubless devices a good thing? They have such a high level of convenience by only needing a WiFi network before they are good to go, but despite this, the answer is usually no. While there is no denying that it is much more convenient to simply connect devices to your WiFi and be done with it as opposed to messing around with a hub, the downside of this is pretty big. With security concerns, privacy problems, along with the problem of losing control if the internet goes out, it isn't always the right choice to make. To learn more about these issues, check out my post on the security and privacy issues of cloud-based systems.

What does "no hub" mean in plumbing?

What does no hub mean in plumbing? A no-hub drain has a lower end that is the same diameter as the drain pipe beneath it. This is essentially a short wide section of pipe that slips over both the end of the drain and the end of the drain pipe, connecting them together. O-clamps are often used to tighten the grip of the connector on the pipes.

What is a no hub roof drain?

Similarly, what is a no hub roof drain? No-Hub Outlet Roof Drain. Used on roofs of any size, for any type of construction. Extra large slotted cast iron dome ensures maximum free area for quick drainage of rainwater and protects the drain sump and connected piping from debris.

What is a no hub coupling?

Intended for use with DWV systems, no-hub couplings are used to join cast iron soil pipe that does not have the traditional Hub and Spigot. They are normally installed using a torque wrench. Generally, they have more clamps and provide a greater band load than standard no-hub couplings.

What is hub in LAN?

A hub, also called a network hub, is a common connection point for devices in a network. Hubs are devices commonly used to connect segments of a LAN. The hub contains multiple ports. When a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.

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