Regulator-2Stg Achg 1/4If X 1/2Fpt 11Wc

Marshall Excelsior's Two Stage Automatic Changeover regulators combine the first and second stage regulator into one unit converting tank pressure to 11” WC. MEC Excela-Flo Automatic Changeover regulators prevent gas outages by switching supply cylinders over to the reserve cylinder automatically when the primary cylinder is near empty. When the primary cylinder is depleted causing the changeover to occur a red indicator will appear signifying the reserve cylinder in now in use and the primary cylinder can be refilled without loss of service. Type: Automatic Changeover Two-Stage Max. Inlet Pressure: 250 PSIG Exterior Finish: Gold / Gray Powder Coat Orifice Size: .14” (Compact) & 7/32” (Full) Seat Material: (NBR) 1st Stage, Fluorocarbon (FKM) 2nd Stage Diaphragm: Fabric Reinforced (NBR) / Molded Lip O-Ring Bonnet/Body Seal Relief Type: Internal Relief - Spring Loaded Bonnet / Body Material: Die Cast Zinc/PlasƟc 1st Stage Die Cast Aluminum 2nd Stage Listings: C ULUS / UL 144 2nd Stage Mounting Holes: Standard 3-1/2” Center Pressure Taps: #54 Orifice 1/8” FNPT Plugged (1) Relief Travel Stop: Molded in Adjustment Cap - Gray (Compact), Black (Full Size)