The auto changeover control panel is designed for uninterrupted gas supply, automatically switching to the other cylinder when one cylinder is exhausted. ▶Maximum inlet pressure：3500psig ▶Outlet pressure range：85～115, 135～165, 185～215, 2 35～265psi ▶Internal component material： valve seat：PCTFE diaphragm：Hastelloy Filter element：316L ▶working temperature：-40℃～+74℃(-40℉～+165℉) ▶Leakage rate (helium)： Inside the valve：≤1×10-7 mbar l/s Outside of valve：≤1×10-9 mbar l/s Connection: no visible bubbles ▶discharge coefficient(Cv)： Pressure relief valve：Cv=0.2 Diaphragm valve：Cv=0.17