No hub couplings are meant specifically for joining lengths of pipes that do not have integral hubs. The most common use of no hub couplings is joining dissimilar material pipes underground in sewer and drain systems. Most no hub couplings carry ratings for underground use, unlike flexible couplings.
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 a no hub fitting?
The typical uses of no hub couplings that meet industry and code standards include:
- The proper no hub coupling is used and meets the code requirements.
- If joining dissimilar pipe materials, you use the proper no hub adapter and make the joints according to industry and code standards.
- The no hub coupling is used in a no-pressure application such as drain, waste, and vent pipes.
What is a hubless pipe?
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. Hub and Spigot pipe and fittings have hubs into which the spigot (plain end) of the pipe or fitting is inserted. What does no hub mean in plumbing?
What is the formula for pipe fitting take off?
take out forumla on 45. Take your pipe size and divide that number in half 3 times. Take the second and 4th number and add them together. That is your take off. Subsequently, question is, what is take off in pipe fitting? First, a definition of "take off": The length of pipe to be removed (taken off) such that a pipe and a fitting make a specific length. The term is a concept shorthand used by pipefitters and plumbers.
What does no hub mean in plumbing?
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.
How do I connect no hub cast iron pipe?
0:591:59What Are "No-Hub Couplings" - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd it's very simple the gasket just goes over one pipe. Then you connect the other. And thenMoreAnd it's very simple the gasket just goes over one pipe. Then you connect the other. And then tighten the stainless steel clamp over the pipe.
What does hub mean in PVC pipe?
Hub – a type of DWV fitting end that allows pipe to slide into the end.
What does hub mean in plumbing fittings?
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 pipe?
Hub and Spigot pipe and fittings have hubs into which the spigot (plain end) of the pipe or fitting is inserted. The joint is sealed with a thermoset elastomeric gasket or lead and oakum.
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”.
Can I use a no hub coupling on PVC?
PVC and ABS schedule 40 piping come with larger overall outer diameter compared to cast iron pipe. There is no drastic difference between this piping if we look at these diameters. So, for the smaller sizes of ABS and PVC piping, you can rely on no hub couplings.
Can you use no hub bands 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 you tell if a pipe is PVC or CPVC?
Color can be a clue, too. Often CTS CPVC is a light yellowish color, while schedule 80 CPVC (NPS) is a light gray color. PVC pipe and fittings usually comes in white or dark gray. Always check the manufacturer printing on the pipe to be sure.
Can you use no hub on ABS?
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.
How do you connect abs to cast iron?
6:209:00How to join cast iron pipe to abs,pvc or copper pipe using an MJ coupling.YouTubeStart of suggested clipEnd of suggested clipSo you'll notice I'm going to try to put on the ABS. It's quite tight. But it will go on just. LikeMoreSo you'll notice I'm going to try to put on the ABS. It's quite tight. But it will go on just. Like so don't put that down go to inch. It will go in the cast quite a bit easier in the ABS.
How do you attach a toilet flange to a cast iron pipe?
11:4021:54REMOVING & REPLACING a Cast Iron Toilet Flange - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo that's what it does we'll slowly tighten them around and that'll tighten against the inside ofMoreSo that's what it does we'll slowly tighten them around and that'll tighten against the inside of that cast iron pipe. But they want this attached to the structure. First and then you tighten that.
How do you tighten a no hub coupling?
1:044:53Anaco-Husky Tutorial for No Hub Coupling Installation - YouTubeYouTubeStart of suggested clipEnd of suggested clipFor 4 band sizes tighten the inner bands first than the outer bands. Again all screws should beMoreFor 4 band sizes tighten the inner bands first than the outer bands. Again all screws should be tightened to 60 inch pounds.
How do you attach cast iron soil pipe to plastic?
0:191:44Connect Plastic Soil Pipe to Cast Iron or Asbestos Cement | Drainage SalesYouTubeStart of suggested clipEnd of suggested clipOr connector pretty clever ring seal on the top. So the PVC pipe sits straight to that locker justMoreOr connector pretty clever ring seal on the top. So the PVC pipe sits straight to that locker just like a normal plastic joint. And then on the bottom. These rubber fins work like a pan connector.
What is a no hub pipe?
To connect, butt the end of a fitting up against pipe or another fitting and connect with a low-pressure clamp-on connector (sold separately). The clamp-on connector is also known as a no-hub coupling. Fittings are for use in noncorrosive environments.
What is a no hub pipe fitting?
Use these fittings in gravity-flow applications both above and below ground. They are also known as no-hub pipe fittings and soil pipe fittings. To connect, place the end of the fitting against your pipe or another fitting and connect with a low-pressure clamp-on connector (sold separately). The clamp-on connector is also known as a no-hub coupling. Fittings are for use in noncorrosive environments.
What is a no hub coupling?
Also known as no-hub couplings, these have a one-piece sleeve with a stop in the center, so you know your pipe is always aligned correctly. Tighten the bands to form a strong seal on rigid pipe of the same or different materials. Connectors are 304 stainless steel for good corrosion resistance.
What is a 270° bend connector?
Fittings are for use in noncorrosive environments. Inline tee reducing adapters are also known as branch tees. The 270° bend connectors are also known as P- traps. For technical drawings and 3-D models, click on a part number.
What is a no hub fitting?
No hub fittings meet requirements for more stringent applications and to meet certain plumbing codes. In general, the synthetic rubber sleeve in a no hub coupling is thicker and more durable than those in flexible couplings.
How Do You Install a No Hub Fitting?
The manufacturers of no hub fittings usually give detailed instructions for installing the no hub fitting. Each manufacturer has its recommendations and requirements. In general, most no hub fittings follow these steps for the proper installation.
What is flexible coupling?
Flexible couplings usually are a rubberized material and have band clamps on each end to form a watertight seal around the pipe.
What is reducer coupling?
Reducer flexible couplings feature different sized pipe diameters on the ends of the couplings. Installations that need to couple different types of pipe material of different and much different pipe diameters call for a flexible reducer coupling.
What adapter do you use to join dissimilar pipe?
If joining dissimilar pipe materials, you use the proper no hub adapter and make the joints according to industry and code standards.
Can hub couplings be used on ABS?
No hub couplings are adaptable to repair and join dissimilar pipe materials. ABS and PVC pipes are easily adaptable to no hub couplings. No hub couplings can join cast iron to both ABS and PVC piping and meet most residential and commercial building codes.
Can flexible couplings be used in sewer lines?
In general, flexible couplings are limited to use in stack and vent pipe installations. Most jurisdictions don’t allow flexible unshielded couplings in drain or sewer installations. No building code that we are aware of allows the use of flexible couplings in systems that are under pressure.
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.
No-Hub Couplings
The No-Hub Coupling has a patented shield design that provides maximum transfer of pressure from the clamps to the gasket and pipe. Engineered to connect no-hub cast iron pipe in applications, replacing the less-efficient hub and spigot.
Features
Patented Bi-Directional Shield Design The shield adjusts to a variety of a pipes diameters and circumferences--eliminating leak paths. The patented, bi-directional corrugation shield seals pressure in both parallel and transverse patterns on the gasket and pipe to provide a positive, reliable seal.
Specifications
5/16" hex-head screw applies 60 in.-lbs. of installation torque to the band/shield assembly.
What is pipe fitting?
A Pipe Fitting is used in pipe systems to connect straight pipe sections, adapt to different sizes or shapes and for other purposes, such as regulating (or measuring) fluid flow. Pipe Fittings (especially uncommon types) require money, time, materials and tools to install, and are an important part of piping and plumbing systems.
What is a bell and spigot pipe?
It's the female end of the pipe. The inside diameter of the hub is designed to be the size of the outside diameter of the pipe. The gap between the two is made water tight in various ways. A rubber gasket, lead and oakem, and solder, etc. The bell on a copper fitting is a hub. The hub is also referred to as a bell, hence “Bell & Spigot” pipe. Bell & spigot pipe is fast and efficient and provides proper alignment. It is available in most materials used by the pipe industry.
What is a reducer in plumbing?
Reducers – for reducing pipe size. Has two female connections into which the different sized pipes fit. May also be made with one connection eccentric for free drainage of water.
How to measure 45 degree pipe?
You measure from centre to centre. Multiply that number by 1.414. Take this number and subtract 2x your fitting allowance. This final number is the cut length of your 45 degree pipe. It works this way regardless of whether you’re soldering, threading or using any number of other joining methods.
What is threaded pipe made of?
This is one of the oldest ways. A threaded pipe is made watertight with a combination of flax and graphite grease.
What is return bend?
Return Bends – for reversing direction of a pipe run.
What is a nipple?
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 providing an easy method for dismantling piping.
