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Technical Bulletin Bulletin No.: PRO-03-13 Subject: D-1 Effective Date: 2/28/78 Cancels: N/A Page: 1 of 1 TO E-1 BRAKE VALVE CONVERSION Remanufactured D-1 Brake Valves and D-1 service parts are no longer available; however, in many cases a conversion to the E-1 can be made with only minor piping changes. The conversion list below covers the historically more popular D-1 Brake Valves. D-1 Brake Valve 223349 223485 223511 223856 224156 224878 225143 *Type Treadle Treadle Basic Treadle-Horizontal Mounting Bracket Actuating Arm Lever Treadle E-1 Brake Valve Adapter Required 228429 228429 226944 228429 237221 237221 None 237221 228429 227282 228429 237079 None 237221 *Treadle/lever assembly from D-1 must be re-used.
