Moen produces a variety of Single Handle faucets. The interior components and assembly are not the same for each model. This article will explain one of the more common handle assemblies referred to as a Bottle Opener. This mechanism was introduced in the 1960's and was used on a select group of products through 1996. The characteristics of the mechanism include a handle rotation range of 360 degrees and a cup cap or a disk cap on the top. This faucet style utilizes a 1225 cartridge.