S21 Series 2-Way Piloted Diaphragm Valve Datasheet

This document provides specifications, dimensions, and part numbering for the GC Valves S21 Series, a 1/2" NPT brass-bodied, 2-way piloted diaphragm valve that is normally closed. It includes details on seal materials (Nitrile, Viton, EPR), electrical housing options, voltage tolerances, coil classes, operating pressure differentials, and a valve selection list with model codes.