Manuals Brands Emerson Manuals Regulators and Relief Valves Type 122A Three-Way Switching Valve Emerson Type 122A Three-Way Switching Valve Emerson Regulators and Relief Valves - Type 122A Three-Way Switching Valve. 1234 Download Page of 4 Go 4.4, 1236 votes Preview coming soon. Download manual right now. NEXT 1234