Our range of pipe tools also includes press fit tools to help with quick jobs on site

These fittings are used for small bore and low-pressure piping. 2000 class fittings are available in only in threaded type. Reducing coupling is used to connect two different sizes of pipe.

Pipe welding is often performed by specially licensed workers whose skills are retested periodically. For critical applications, every joint is tested with nondestructive methods. Because of the skills required, welded pipe joints are usually restricted to high-performance applications such as shipbuilding, and in chemical and nuclear reactors. Although they are usually used to attach pipe and fittings to mechanical supports in buildings, they do not connect the pipes to each other.

The larger-diameter hub was also called a “bell” because of its shape. Adequate ventilation is essential to remove metal fumes from welding operations, and personal protective equipment must be worn. Because the high temperatures during welding can often generate intense ultraviolet light, dark goggles or full face shields must be used to protect the eyes.

With high peak-flow volumes, the design and construction of these systems may resemble those of storm sewers. Never let that be the case with our selection of copper tubes, stainless steel tubes and different plastic pipe options. Long radius pipeline bends are used in fluid transportation lines which required pigging. Due to their long radius and smooth change of direction, the pipe bend has very less pressure drop, and a smooth flow of fluid & pig is possible.

McAlpine valves, such as the McAlpine VP50P air admittance valve, features a dual-fit synthetic rubber finger seal for 3” or 4” soil pipe. Direct the flow of water outside a property with overflow pipes. Our range of PVC overflow pipes are available to buy in 30m, in either black or white. Aquaflow pipes come in a variety of sizes and shapes to complement the property design.

Although reducers are usually concentric, eccentric reducers are used as needed to maintain the top- or bottom-of-pipe level. Gaskets are mechanical seals, usually ring-shaped, which seal flange joints. Commonly used gaskets are non-metallic (ASME B 16.21), spiral-wound (ASME B 16.20) and ring-joint (ASME B 16.20). Non-metallic gaskets are used with flat- or raised-face flanges. Spiral-wound gaskets are used with raised-face flanges, and ring-joint gaskets are used with ring-type joint flanges. Stress develops between an RTJ gasket and the flange groove when the gasket is bolted to a flange, leading to plastic deformation of the gasket.

Take a look at our comprehensive ranges for effective plumbing and Gas Safe installation below. The information on those websites is not provided by Steel & Tube. Tighten the union nut until the point at which it becomes noticeably more di cult to turn the union nut. At this point, for example, minor damage on the thread caused by the union nut getting caught must be overcome.

This view looking upwards through a hole in the ceiling shows a traditional leaded hub joint and a more recent rubber-sleeved hubless connection . There are similar fittings for both sweat and solvent joinery. Since they are not “tapped” , they are simply called reducing bushings. 3000 & 6000 class fittings are available in both Threaded and Socket Weld types.

Fittings require money, time, materials, and tools to install, and are an important part of piping and plumbing systems. Valves are technically fittings, but are usually discussed separately. Choosing the material of your pipe fitting comes down to what will be running through the pipe. From fittings perfect for cold water supplies to reliable options for gases and chemicals wastes, we carry a variety of fitting options to help you get the job done.

It must be installed in an easily accessible place for adjustment, replacement, and repair. A trap primer, a specialized valve, is usually connected to a clean-water supply in addition to a DWV system. Because of the dual connection, it must be designed to resist the accidental backflow of contaminated water. Underground piping systems for landscaping drainage or the disposal of stormwater or groundwater also use low-pressure gravity flow, so fittings for these systems resemble larger-scale DWV fittings.

black iron cross fitting


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