![]() ![]() It is critical to avoid over-tightening the nut or else the integrity of the compression fitting will be compromised by the excessive force. However, a small amount of plumber's grease or light oil applied to the threads will provide lubrication to help ensure a smooth, consistent tightening of the compression nut. Thread sealants such as joint compound ( pipe dope or thread seal tape such as PTFE tape) are unnecessary on compression fitting threads, as it is not the thread that seals the joint but rather the compression of the ferrule between the nut and pipe. The bolts have to be tightened down evenly. Larger sizes of compression fitting do not have a single nut to compress the ferrule/olive but a flange with a ring of bolts that performs this task. The result is that the ferrule seals the space between the pipe, nut, and receiving fitting, thereby forming a tight joint. When the nut is tightened, the ferrule is compressed between the nut and the receiving fitting the ends of the ferrule are clamped around the pipe, and the middle of the ferrule bows away from the pipe, making the ferrule effectively thicker. To work properly, the ferrule must be oriented correctly-usually the ferrule is fitted such that the longest sloping face of the ferrule faces away from the nut. Ferrules vary in shape and material but are most commonly in the shape of a ring with beveled edges. In small sizes, the compression fitting is composed of an outer compression nut and an inner compression ring or ferrule (sometimes referred to as an "olive") that is typically made of brass or copper. They are used because of their ability to provide leak-tight seals. Compression fittings for attaching tubing (piping) commonly have ferrules (or olives in the UK) in them.Ĭompression fittings are also used extensively for hot and cold water faucets (taps) and toilet stop valves compression fittings are well suited to this application, as these valves are usually located in confined spaces where copper pipe would be difficult to solder without creating a fire hazard.Ĭompression fittings are the industry standard for chemical, oil and gas, R&D, Bio-tech, and the semiconductor industry. In instances where two pipes made of dissimilar materials are to be joined (most commonly PVC and copper), the fittings will be made of one or more compatible materials appropriate for the connection. ![]() (April 2013) ( Learn how and when to remove this template message)Ĭompression fittings are used in plumbing and electrical conduit systems to join two tubes or thin-walled pipes together. Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. We will help you select the proper piping system and fittings for your application, and answer any and all of your questions in the process.This article needs additional citations for verification. Our fittings are available in a wide variety of configurations, including tees, elbows, couplings, reducer bushings, and many, many more.Īt Ryan Herco, our inside and outside sales representatives are trained extensively in fluid control processes and applications to provide the solutions for your specific process or application.Ĭontact one of our team members today. Additional materials include Polypropylene, PVDF, Polyethylene, ABS, Nylon, Stainless Steel and Specialty Alloy. We have an extensive selection of PVC and CPVC pipe and fitting products, ranging in size from 1/4" to 16", which includes both clear and grey PVC pipe in schedules 40, 80, and metric. If you need to get a fluid (such as water or an acid) from point A to point B under any temperature, pressure or purity requirement, why not go with the top-quality products at competitive prices that Ryan Herco has to offer? Pipe Materials & Specifications For decades, Ryan Herco has provided customers with thermoplastic corrosion resistant piping systems and fittings, and we have now expanded our product line into stainless steel and alloy piping. RHFS's piping systems are often needed in systems that handle corrosive materials and extreme temperature materials or pressures. Knowledgeable People Make the Difference.PVDF Aggressive Chemical Drainage Systems.
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