S21 Series 2-Way Piloted Diaphragm Valve Specifications

This document provides specifications for the GC Valves S21 Series, a 3/8" NPT brass body, 2-way piloted diaphragm valve that is normally closed. It includes dimensions, weight, material seals (Nitrile, Viton, Ethylene Propylene), electrical housing options, voltage tolerances, operating temperatures, approvals (UL, CSA), and a valve selection list with model codes and operating pressure differentials.