Western Enterprises® Spiral And NPT Hose Nipples Come In Various Sizes.
A-size and B-size nipples rang in size from an inside diameter of 3/16 inch up to 1/4 inch. They are made of solid brass and have a pressure rating of 200 PSIG. Available in four different types. NPT thread size is 1/8 inch. The length of each one is between 1 5/8 inches and 1 1/4 inches.