Industrial 851-040C Flange

Spears 851-040C is a 4-inch nominal CPVC one-piece flange socket rated CL150 (150 psi) for Schedule 80/XH CPVC piping. It features an eight-bolt pattern with 5/8-inch bolt holes, an outside diameter of 9-1/16 inches, and a bolt circle of 7-1/2 inches, all in a gray CPVC body. The flange measures about 2-7/16 inches long and is designed for socket connections that are cemented to CPVC pipe. As part of Spears' 851-040 CPVC flange family, this 851-040C provides robust, corrosion-resistant performance for industrial and commercial installations where CPVC's chemical resistance and elevated temperature tolerance are beneficial. This 4-inch flange is intended for domestic use and is compatible with matching CPVC pipe and flange components. The eight-bolt configuration distributes loading evenly around the face, helping seal integrity in pressurized piping systems up to 150 psi at standard operating temperatures.