A pipe hanger suspends pipes and ducts from a structure beam or roof, with adjustable metal bands attached to threaded rods secured with nuts and washers. Building codes dictate spacing and style of hooks used, and some lines require insulated or rubber-lined suspension clamps. Cold water supply lines can cause noise distraction due to expansion or contraction, but mobile hinge or rubber support pipe hooks can solve the problem.
A pipe hanger is a device used to suspend a wide variety of pipes and ducts above the ground. Usually hung from a structure beam or the roof of a structure, the pipe hanger is fully adjustable to allow pipes to remain level or on a slight slope even if the structure or structure is not on the same level. Commonly manufactured from a metal band attached to a threaded rod, the pipe hanger is secured to the hanging surface using nuts and washers. With some pipe hanger constructions, the hanger clamp component is used as a cradle with the pipe sliding freely through it, while other designs use a clamp clamp that is tightened to the pipe to secure it from any movement.
In some small areas, a pipe hanger can be constructed with a steel band screwed to a floor joist at both ends as the pipe rests in the resulting belt arc. However, this type of support is not recommended for pipes and lines carrying gases or liquids under pressure. Pressurized lines often pop when pressure is removed and applied. This results in banging and rattling throughout the structure where the loose pipe hangs. This is also a great example of where the hose hanger tightening style should always be used.
Most building codes will dictate where to install all pipe hangers. Failure to observe the required spacing and style of hooks used may lead the inspector to halt all site work until the hooks are brought up to standard. Some hot water pipes even require insulated hangers, while other lines require features such as rubber-lined or galvanized suspension clamps. The diameter of the hanger threaded rod can also be mandated by code depending on the type of line supported, the type of structure the line is being installed into, and the geographic location of the construction site.
One of the more common lines that cause bumps and noise distraction is a cold water supply line. As the temperature of the water inside the line changes, the pipe will expand or contract. This is often the cause of heavy banging from under floors or from overhead ceilings. A common solution to this type of problem is the application of pipe hooks that are firmly fixed to the structure by means of a mobile hinge or a rubber support. The hinge, whether it is a common hinge or a rubberised version, allows the hose hook to move freely and silently as the hose length changes.
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