User's Manual

Component Descriptions
September 2013 2-20 P/N 81-CO2MAN-001
Figure 2-20. Lever-Operated Control Head
2-3.2 Cable-Operated Control Head
The cable-operated control head, Part No. 81-979469-000 (Figure 2-21 and Figure 2-22), is a
mechanical device that allows for remote manual actuation of carbon dioxide cylinders, stop
valves, and directional valves by means of signals transmitted via pull boxes and cables. A
manual lever is also provided on the control head for local operation.
A tension force transmitted by a cable will cause the control head's cable clamp and wheel
assembly to travel linearly and depress the actuating pin to open the pilot check on a cylinder
valve or directional (stop) valve.
BODY
SWIVEL NUT
1-1/2 in. (81 mm)
SET
OPERATED
STEM
CLOSED
SEAL WIRE
LEVER
1-1/4 in. - 18 NF-3
FEMALE
TO OPEN
ALLOW APPROXIMATELY
2 in. (50 mm) CLEARANCE
FOR OPERATION OF LEVER
3-3/16 in.
(81 mm)
LOCKING PIN
3 in.
(76 mm)