User's Manual

Component Descriptions
September 2013 2-38 P/N 81-CO2MAN-001
Figure 2-42. Pressure Operated Control Head
2-3.7.2 LEVER AND PRESSURE OPERATED CONTROL HEAD
The lever and pressure operated control head, Part No. 82-878751-000 (Figure 2-43), consists
of a spring-loaded piston-and-stem assembly housed in a brass body, and a lever for
emergency manual operation. The body has a threaded inlet port that connects to the pressure
line and a swivel nut for connection to a control port. The supplied pressure, or manual
operation of the lever, actuates the spring-loaded piston-and-stem assembly to engage the
pilot check of the control port to which it is connected.
2-3/16 in.
(56 mm)
SET
OPERATED
1-1/2 in. HEX
(38 mm)
1-1/4 - 18
UNEF-3B
SWIVEL NUT
PISTON
1/8 in. - 27 NPT
PRESSURE INLET
1 in. HEX
(25 mm)