Jflow controls JFD Series Operation And Instruction Manual

1) INTRODUCTION
This instruction is a guide for general installation,
operation, maintenance and storage for J Flow
Controls pneumatic diaphragm actuators. Please
follow instructions to ensure optimum performance
and Safety.
2) IMPORTANT SAFETY PROCEDURES
JFD series actuators shall only be used as actuators
on valves or damper application. Levers, racks and
similar cannot be used to transmit movement without
protective equipment.
ALWAYS DISCONNECT AIR LINES AND
ELECTRICAL SOURCES PRIOR TO
PERFORMING MAINTENANCE ON THE
ACTUATOR
Relieve trapped medium pressure within ball
valve or plug valve body cavities before
removing the actuator from valve assemblies
for maintenance.
3) OPERATING MEDIUM, PRESSURE AND
TEMPERATURE
Operating medium:
Use air, gas, oil, and water.
Operating pressure
Do not exceed 100 PSI (7 bar)
4) LUBRICATION
Use standard seals and grease, the operating
temperature range is -4 (-20 ) to
+150 (+65C ).
For operating medium, pressure and temperature
outside these ranges, please
consult J Flow Controls.
OPERATION AND INSTRUCTION MANUAL
Spring Return Diaphragm pneumatic actuator
JFD Series
5) OPERATING PRINCIPLE
Air (or Medium supplied) to the Diaphragm
(17) casing pushes the actuator stem
downward. This action compresses the
spring, which in turn pushes the actuator
shaft (12) back up when the supply pressure
is decreased or lost.
The spring shaft (12) trurns the drive stem (3)
90 degrees and creates a rotary motion.
6) ACTUATOR STROKE ADJUSTMENT
Travel Stops and Settings
Travel Stop and settings. Actuator with 90°
rotation, the stroke adjustment is +/- 4°
Upper and Lower Adjusting screws to set
open and closed stops.
J Flow Controls, LLC
14 De Camp Cincinnati, OH 45216
Phone: 513-731-2900 Fax 513-731-6939