![]() ![]() They also eliminate soldering and leave the original ends intact for future disassembly. As the nut is tightened, the compression ring is pressed into the seat, causing it to compress against the pipe and the compression nut, providing a watertight connection.”Ĭompression fittings are also used to connect pipes of different materials, like PVC and copper. The pipe is slid into the fitting and the nut is tightened down. The nut is slid onto the pipe, followed by the compression ring. It consists of three parts.the compression nut, the compression ring, and the compression seat. “A compression fitting is a type of coupling used to connect two pipes or a pipe to a fixture or valve. We like the explanation given by The Natural Handyman: The wrench tightens the outer nut which then squeezes an inner ring. So how do they get their name? And how do compression fittings work? They get their name because the join is made by compressing tubes or pipes together-often with a wrench. They can be a bit trickier to identify as they are not so obvious. Often these ends are referred to simply as compression rather than FCM. ![]() You’ll find FGH connectors on washing machine water hoses, steam dryer water hoses, dishwasher water hoses, and Y connectors. If you use an outdoor watering hose, you are quite familiar with these ends, even if you’re not familiar with their technical names. The bottom image is a FIP.įGH means Female Garden Hose. FIPs do come in various sizes, so one size does not fit all. Adapters are included in those kinds of kits case another kind of fitting is required. You can also find a brass compression to MIP elbow on the end of water hoses used in dishwasher kits. These connections usually require plumber’s tape around the male threads to ensure a tight seal.Ĭommon usage is to connect a gas line to a gas dryer, range, water heater, or furnace-systems that are pressurized or carry hazardous materials like natural gas. FIPs have threads on the inside, MIPs on the outside. Here at Certified we use the more common FIP and MIP terms. And they aren’t necessarily made of iron-they could be made from copper or steel. To make matters worse, sometimes they are referred to as NPT or National Pipe Thread. ![]() And MIP is called MPT or Male Pipe Thread. As the Pure Water Gazette points out, sometimes FIP is called FPT or Female Pipe Thread. That’s why we’ve put together an easy-to-understand overview with photos of the key plumbing abbreviations you’ll find mentioned on Certified Appliance Accessories hoses and connectors.įIP means Female Iron Pipe. They accurately indicate the particular kind of ends on every hose or adapter. FIP? MIP? FGH? MGH? FCM? One of the hardest things for consumers to grasp is what all those puzzling plumbing acronyms mean. ![]()
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