Magazine Issue – 2018 Vol. 13 No. 1 (Jan – March 2018) Valve Designs as per Industry’s Requirements Vol. 13 No. 2 (Apr – June 2018) Valves Materials Matter Vol. 13 No. 3 (July – September 2018) Regulators Vol. 13 No. 4 (Oct – December 2018) Diaphragm and Pinch Valves – Preamble