Lightly lubricate the thread and cone of the assembly stud and the thread of the union nut. However, the O-ring must be removed before welding, and any stray welding material must be removed from the O-ring groove and the fitting hole. Plug is a component of plumbing component which is generally used to close pipe opening during inspections and repairs. In use, the spigot of one segment was placed into the socket of the preceding one and a ring of oakum was forced down into the joint with a caulking iron. Ideally, this would be done by pouring in molten lead, allowing it to set, and hammering it tightly with a caulking tool. If this was not possible due to position or some other constraint, the joint could alternatively be filled with lead wool or rope, which was forcibly compacted one layer at a time.

A threaded pipe has a screw thread at one or both ends for assembly. Crosses, also known as four-way fittings or cross branch lines, have one inlet and three outlets , and often have solvent-welded socket or female-threaded ends. Cross fittings may stress pipes as temperatures change, because they are at the center of four connection points.

There are three pieces in a union, a nut, a female end, and a male end. When the female and male ends are joined, the nuts provide the necessary pressure to seal the joint. Cap is a type of pipe fitting which function is same as plug but the only difference is plug contain male threads and cap contain female threads which is screws on the male thread of pipe. These are available in different materials like rubber, copper, steel, plastic etc. They are typically made of brass or plastic, but stainless steel or other materials may be used.

A nipple with continuous uninterrupted threading is known as a close nipple. Miter bends are not standard pipe fittings they are fabricated from pipes. Usually, they are preferred for size 10” & above because large size elbow is expensive.

china malleable iron galvanized pipe fittings

The CPVC fittings we offer will not glue on PVC schedule 40 pipe. The CPVC fittings we offer are Copper Tube Sized and normal Schedule 40 PVC pipes are sized according to IPS standards which are slightly larger in diameter. CTS sized piping has the same outside diameter as copper piping. 1/2″ Schedule 40 PVC fittings fit PVC piping that is 27/32″ O.D. Disassemble the pipe or threaded connection and check that a clearly visible shoulder of cut material is present in front of the first cutting edge. In this case, the cutting ring may be allowed to rotate, but must not move axially.

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.

They are made up of different materials like copper, iron, brass, PVC etc. Flange fittings are generally used for connections to valves, inline instruments or equipment nozzles. Two surfaces are joined tightly together with threaded bolts, wedges, clamps, or other means of applying high compressive force. Although a gasket, packing, or O-ring may be installed between the flanges to prevent leakage, it is sometimes possible to use only a special grease or nothing at all . Although flange fittings are bulky, they perform well in demanding applications such as large water supply networks and hydroelectric systems. Elbows are used to change the direction of flow between two pipes.

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.

There are two types of Tee used in piping, Equal / Straight Tee, and Reducing / Unequal Tee. 45 Degree elbow is installed between the pipe to change the direction of the pipe by 45 Degree. Tighten union nut about 1/2 turn, bracing the screw sleeve with a spanner. Tighten union nut 1/4 turns, bracing the screw sleeve with a spanner. Disassemble the pipe and check that a clearly visible shoulder of cut material is present in front of the rst cutting edge.