Quick view MARSHALL EXCELSIOR COMPANY Excela-Flo Compact Twin Stage Regulator 1/4 in. FNPT Inlet x 3/8 in. FNPT Outlet 11 in. WC Outlet Compact two-stage regulator with 1/4 in. FNPT inlet and 3/8 in. FNPT outlet. Approved for use in nea MSRP: Was: Now: $0.00 Call for Pricing