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A tee is steadier than a cross; it behaves like a three-legged stool, and a cross behaves like a four-legged stool. A fitting or adapter is used in pipe systems to connect straight sections of pipe or tube, adapt to different sizes or shapes, and for other purposes such as regulating fluid flow. These fittings are used in plumbing to manipulate the conveyance of water, gas, or liquid waste in domestic or commercial environments, within a system of pipes or tubes. Pipe fittings are essential for all plumbing applications.

Increase the length or join solvent weld pipe together with Magicflex solvent elbows and connectors from Wirquin. All our solvent weld connectors can bend and stay fixed when welded. Spend over £25 online and receive free delivery with your order or click and collect from your closest Toolstation branch. When compared to other connection types, press fittings have the advantages of installation speed and safety. Pressing a stainless steel fitting can be completed within 5 seconds with the correct equipment.

Why not take a look at our range of stainless steel products or get in touch to speak to a NERO representative today. With sealing cone screw-on ttings with O-ring (AOL / AOS), the pre-stressing of the O-ring must be bridged and the sealing cone must lie metallically ush against the cone of the HL/HS connector. Cutting ring ttings are available with a wide range of standardised screw-in threads, enabling them to be used for an enormous variety of applications. All fittings are designed to withstand the operating pressures specified in the standards, in some cases the requirements of the standard are exceeded. “plumbing – In slip joints, what’s the difference between rubber and nylon washers? – Home Improvement Stack Exchange”.

Throttling valves are used to control the amount or pressure of a fluid allowed to pass through, and are designed to withstand the stress and wear caused by this type of operation. A double-tapped bushing is a fitting which serves as a reducer. It is a sleeve similar to a close nipple, but is threaded on both its inner and outer circumferences. Like a reducer, a double-tapped bushing has two threads of different sizes.

This generally requires that the piping and fitting are the same material. Skill is required to melt the joint sufficiently to ensure good fusion, while not deforming or damaging the pieces being joined. A trap primer automatically injects water into a trap, maintaining a water seal to keep sewer gas out of buildings.

black iron cross fitting

PTFE tape and pipe joint compound (also known as “pipe dope”) should only be used on “IPS” (“iron pipe size”) threads, which are normal pipe threads. IPS threads make their seal along the threads themselves; when a piece of IPS-threaded pipe is screwed into a fitting, PTFE tape and/or pipe dope is used to assist that seal on the threads. Flare fittings, on the other hand, seal on the beveled ends of the fittings, and so using pipe dope or tape on flare threads could actually prevent the fittings from making an adequate seal. The chief advantage of these connectors is that they can be installed after cutting the pipe to length in the field. This can save time and considerable expense compared to flange connections, which must be factory- or field-welded to pipe segments. However, mechanically fastened joints are sensitive to residual and thickness stresses caused by dissimilar metals and temperature changes.

The pressure losses that inevitably occur in pipeline systems can be recorded either by measuring equipment or by calculation. In order to achieve an optimum seal, conical screw-in threads must be provided with an additional sealing means, e.g., Teflon tape. Flare fittings were originally developed for high pressure applications and are used widely in locations that are exposed to strong vibrations. As the cutting ring moves along a precisely de ned assembly path, its cutting edges are forced into the surface of the hydraulic pipe.

The flare nut, which had previously been installed over the tubing, is then tightened over the fitting to force the tapered surfaces tightly together. Flare connectors are typically made of brass or plastic, but stainless steel or other materials may be used. A solvent is applied to PVC, CPVC, ABS or other plastic piping to partially dissolve and fuse the adjacent surfaces of piping and fitting. Solvent welding is usually used with a sleeve-type joint to connect pipe and fittings made of the same material.