What Is A Close Nipple?
In plumbing and piping, a nipple is a fitting consisting of a short piece of thread pipe, usually provided with a male pipe threaded at each end for connecting two other pipes or fittings. The length of the nipple depends on how long the threads are. A close nipple has virtually no unthreaded area when screwed tightly between two female fittings; very little of the nipple remains exposed. In this case, the connected fittings are very close to touching each other, and you can barely see the nipples. When ordering a close nipple, indicate the diameter followed by close, for example, 1/2 x close. Given the name, you may have figured out the purpose of a Close Nipple. The use of a close nipple allows you to create a closed, tight connection between two female-threaded steel pipes or fittings. However, Close nipples are difficult to install and remove. The closed plumbing nipple can only be unscrewed by gripping one threaded end with a pipe wrench, which may damage the threads and necessitate replacement. So, a nipple can require a specialty tool such as a nipple wrench (or an internal pipe wrench), which grips the inside of the pipe, leaving the threads undamaged. A nipple wrench is a tool for tightening or loosening the running nipple, which provides a stable grip and protects the thread from damage. Choose the appropriate size of the nipple and internal pipe wrenches based on the internal diameter, and avoid excessive force to prevent damage to the inner pipe wall. The close nipple pipes have common materials, including carbon steel, specifically galvanized and black carbon steel, and stainless steel close nipple pipes. According to the export standards, there are American standard ASTM A733, German standard DIN2982, and British standard BS EN10241 specifications. According to the process, there are welding pipe nipples and seamless close pipe nipples. Welded close pipe nipples are constructed by joining two pieces of pipe using a welding process, ensuring a strong and durable connection. These nipples often exhibit a thicker wall and enhanced pressure ratings, making them suitable for high-stress applications. On the other hand, seamless close pipe nipples are formed from a single piece of material, eliminating weld seams. This manufacturing method provides superior integrity and resistance to corrosion. Both types are vital in various piping systems, allowing for easy connections between fittings, valves, and other components. Welded and seamless often hinges on factors such as the application pressure requirements, material compatibility, and budget considerations. Ultimately, understanding the distinctions between welded and seamless close pipe nipples is essential for ensuring the integrity and efficiency of any piping project. A close nipple is typically as short as possible, with no unthreaded portion between the two threaded ends. Its length is effectively enough to allow for the full threading on each side, bringing the two connected fittings as close as possible. Plumbing nipples are specified by their diameter rather than their exact length, emphasizing the close connection rather than a precise measurement. The closed pipe nipple is significant because it allows for free adjustment of the pipe position at both ends. It is commonly on fire-fighting spray pipes. Twin Screw Barrel,Barrel Screw Extruder,Injection Molding Barrel,Barrel And Screw Zhoushan Jinsheng Bimetallic Plastic Machinery Factory , https://www.jinshenggalloy.comUnderstanding Close Nipples in Plumbing and Piping
1. What is a Close Nipple?
In its most basic form, a pipe nipple is a short length of pipe with male pipe threads at both ends for connecting other fittings. Generally, there is a short distance of unthreaded pipe between the two threaded ends, depending on how far apart you need the attached fittings to be. When there is no unthreaded pipe between the two connecting ends, the pipe nipple is called a close nipple or a running nipple. In that case, connected fittings come close to touching one another, with very little nipple visibility.
2. Purpose and Functionality of Close Nipples
there is a downside to closed nipples. The only way to tighten or loosen a closed nipple is to grip the threaded portion with a wrench. Because of this, it becomes easy for the applicator to damage the threading, requiring replacement of the nipple. Damaged threading can cause issues with your connection if not addressed. These issues may involve leaks of air, water, or other fluids based on the nipple application. There are special tools available to assist in their use.
3. Usage Challenges of Close Nipples
4. Tools for Working with Close Nipples
Types and Specifications of Close Nipples
5. Material Variations in Close Nipples
6. Standard Specifications of Close Nipples
7. Manufacturing Processes for Close Nipples
8. How long is a Close Nipple?
The exact length of a close nipple varies depending on the pipe size (diameter). It is generally very short, often between 1 to 1.5 inches (2.5 to 3.8 cm) for diameters like 1/2 inch or 3/4 close nipple. The length may increase slightly For larger diameters to allow for full threading. However, this increase will be minimal.
Applications and Advantages of Close Nipples
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