Clevis Pipe

A clevis hanger is a pipe attachment providing vertical adjustment, consisting of a clevis-type top bolted to a formed steel bottom strap. A clevis fastener is a three-piece fastener system consisting of a clevisclevis pin, and tang. They are recommended for the suspension of non-insulated or insulated, stationary pipelines. A clevis is U shaped or forked metal connector which can be connected or fastened by a bolt or pin passing through the end of the connector. A clevis pipe hanger was used to connect two items, one with a ring at the end, and one that would fit in the U and had a hole in it for the pin to go through. A clevis pipe hanger is a pipe support

Clevis pipe hangers can be known also, as Ancillary Equipment, these components include Beam Attachments, Hanger Rods, Turn Buckles, Clevises, Eye Nuts, and Pipe Clamps. Hanger rods and fittings are available in thread sizes ranging from multiple sizes. Pipe clamps are supplied in both two and three-bolt configurations from a range of materials, A Clevis hanger, is basically pipe support to hang pipe and steady loads of the weight and gravitational forces. Although a clevis hanger is a pipe support, it is just one of the components in a piping system that handles the piping system’s weights and movement. However, the pipe clevis is probably used more than any other type of hanger. Other factors a pipe clevis handles, are the sustained or steady loads such as the internal fluid pressure, external pressure, the weight of pipe due to the gravity forces. Even though a Clevis Hanger is recommended for non-insulated pipe, there are many exceptions, where the pipe is insulated. This s seen in the LNG plants where the pipe may be insulated with Polyurethane Foam, synthetic wood, or gel. On these occasions, a special hanger can be designed. Applications could include Cold Shoes, Hot Shoes, Pipe Anchors, Pipe Guides, Risers, and HVAC. Service would include steam, gas air, water. There are many more requirements for clevis hangers in HVAC and commercial applications. Every commercial building, apartment, and even commercial parking garage could have thousands of pipe clevises, Vibrasnub, and pipe supports.

There are four major types of pipe clevis. 1) Adjustable Clevis Pipe Hanger, 2) Clevis pipe hanger for insulated lines, 3) Roller Hangers and 4) Trapeze Roller Hanger. The adjustable clevis hanger is most common. A clevis hanger can be as small as ½” or larger than 36” s. The material normally is Carbon Steel. The finish can be black or galvanized. A special coating is available in the market. The adjustable clevis hanger is recommended for the suspension of non-insulated, stationary pipelines. This is U-bolt design has a yoke on the outside of a lower U-strap. Components include a top yoke, bottom strap, and bolt or stud with nut assembled. The height can be adjusted with nuts. The Clevis Pipe Hanger for insulated lines has been lengthened to allow for room for the insulated pipe. The most common material for this type of Clevis Pipe Hanger is carbon steel. However, another material is available for special services. Roller Hangers can be a type of a Clevis Pipe Hanger. This service is for the suspension of pipe from a single rod where horizontal movement may occur because of expansion or contraction. A roller is on the base of the clevis and allows the pipe to move where there may be horizontal movement because of expansion or contraction. The roller trapeze is for suspension of pipe from two rods where longitudinal movement due to expansion or contraction may occur. These types of Clevis Pipe Hangers are also adjustable for vertical movement.

Pipe supports and Pipe Clevis hangers have been instrumental in the support of piping systems for thousands of years. In fact, one of the oldest known plumbing systems was created by the ancient Egyptians around 4000 – 2500 B.C. Since their lives depended on the ebb and flow of the Nile River, Egyptian engineers created and used a very intricate piping system to keep the water flowing where it needed to go. The most impressive of old plumbing systems can be found in ancient Rome. The Roman Empire has been admired for hundreds of years due to its engineering ability, and you can see that in its sewer system. The first Roman sewer system was called the Cloaca Maxima and was built in the sixth century B.C. What started as an open channel was eventually closed and vaulted. The Cloaca Maxima is the oldest plumbing system that is still in use today, and amazingly some of the original masonry work is still holding together. The Romans also created aqueducts, adding a new level of ingenuity to the oldest known plumbing systems. Relying on gravity, aqueducts transported water from the mountains above the cities to public bathhouses and fountains. The water used there was then drained to the Cloaca Maxima. This created a constant supply of running water that helped to clear the waste and other obstacles from the sewer. Clevis Pipe Hangers were made of hemp rope and leather, and even cooper. What we learned from the oldest plumbing systems, especially from the Romans, has helped us shape our modern-day plumbing systems. The remnants of these ancient plumbing systems have been copied and are still being used. Even older systems used clevis hangers. One of the oldest known plumbing systems was created by the ancient Egyptians around 4000 – 2500 B.C. Since their lives depended on the ebb and flow of the Nile River, Egyptian engineers created and used a very intricate piping system to keep the water flowing where it needed to go. These pipes were initially made from clay and were later upgraded to copper. They created this sophisticated system to help move water from the Nile to help people water their crops and even provide their homes with running water. These systems were discovered in the excavations of ancient tombs, as the Pharaohs’ burial chambers were built complete with draining bathtubs and other lifestyle necessities for the afterlife. Plumbing wasn’t unique to Egypt at this point in history, however, since some of the first water pipes were discovered from around 4000 B.C. in the Indus River Valley in India. They may not be an actual Clevis pipe hanger, but they were the U-shaped component of a shackle for attaching a drawbar to a plow or similar implement. Carpenter and Paterson USA is a manufacture Clevis Hangers.

The actual Clevis was patented in 1897, dated January 11, 1897. Patent No. 355,980. The following is from Franks S. Dimon, of Fort Scott, Kansas, Clevis Pipe Hanger patent. (We did not include the pictures and drawing from Patent. To all whom it may concern: Be it known that I, FRANK. S. DIMON, a citizen of the United States, residing at Fort Scott, in the county of Bourbon and State of Kansas, have invented certain new and useful Improvements in Clevises; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification. This invention relates to clevises, and particularly to that class which is provided with a locking device for the clevis-pin to keep it from dropping or working out, and the object of the invention is to provide a clevis with a locking device which shall be easy to use and certain in its operation. The invention consists in the improved locking clevis-pin, as hereinafter fully described and claimed, the essential features of which are a pin having a fixed lug at the bottom and a movable Spring-pressed lug at the top, the two being on opposite sides of the pin, the head of the pin being made in two parts, one part fixed to the pin, while the other is an extension of the movable lug, utilizing which the lug can be retracted. In the accompanying drawings,. The combination, with a clevis having holes in the end thereof for a clevis-pin, of a pin having a lug at the bottom, adapted to pass through the holes of the clevis and to engage with the clevis when the pin is turned so that the pin cannot be withdrawn, and a spring pressed movable lug at the head of the pin adapted to fit into the upper hole of the clevis by the side of the pin to prevent the pin from being turned, Substantially as and for the purpose set forth. 2. The combination, with a clevis having holes and Co. The head C is formed, as the holes a and a’, of the clevis-pin.

The Clevis Hanger is an integral part of the pipe support system. Since the ancient civilizations. To the turn of the century and the 21 centuries. Clevis pipe hangers may be simple and small, but they are the key to the piping and pipe supports. Without the pipe clevis. Would pipe be laying on the ground? Would civilization move forward without sewers and water transportation? Are clevis hangers more important than transistors, electricity, or antibiotics? Probably not. However, without the Clevis Pipe Hanger, would these other important discoveries have happened? The Clevis Pipe Hangers is not as exciting. But we owe a lot to this small little pipe support. Contact us at Dannenbaum LLC.