Butterfly Valves 14" to 24" - HAYWARD Industries, Inc. - #2

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OPERATION When installation is complete, check for proper alignment. Fully open and close the valve 3 or 4 times. Maximum operation pressure at ambient temperature is given below. Maximum continuous operation temperature 160 ºF. See Chart Below for pressure derating at temperature. Maximum Working Pressure at Temperature in PSI Nominal Size 70 MAINTENANCE OF THE VALVE I. Minimal valve maintenance is required. II. Actuator Assembly: Actuators can be removed and installed without removing valve from the line. The line ° F 80 ° F 100 ° F 120 ° F 140 ° F 160 ° F 14” 105 100 75 50 40 35 16” 90 85 65 40 35 30 18” 75 70 55 35 30 25 20” 55 50 40 33 22 20 24” 55 50 40 33 22 20 MUST be depressurized before any actuator is removed. A. Gear Actuators: remove four (4) hex nuts and the washers that hold the actuator to the body. B. Pneumatic / Electric Actuator: removed by unscrewing either four (4) socket head cap screws or hex nuts which hold the actuator to the valve.
BYLIS Rev C June 7, 1999 ECR 819R