GC Valves S21 Series 2-Way Piloted Diaphragm Valve Datasheet

This document provides specifications, dimensions, and part numbering for the GC Valves S21 Series, a high-performance 3/4" NPT brass body, 2-way piloted diaphragm valve that is normally closed. It includes details on materials (Viton, Teflon seals; stainless steel orifice), electrical housing options (NEMA 4/4X, explosion-proof, DIN), voltage tolerances, coil classes, operating conditions, and a valve selection list with model codes and pressure differentials.