Couplings from Lorenz & Son are constructed of 100% stainless steel. The patented quick-release handle will not pop off during vibration, and as the handle is tightened, the threads are self-protected. This design prevents the handle from separating from the coupling. A 3/16"-thick neoprene gasket provides superior sealing and resistance properties. These couplings are suitable for pneumatic conveying lines, vacuum lines, and bulk handling systems requiring frequent access. Installation requires no tools and can be made in seconds. Couplings are available in all standard pipe and tubing sizes and in a variety of gaskets. For more details, contact Lorenz, PO Box 20, Cobourg, Ontario, K9A 4K2 Canada.