Component Description
October 2014 3-20 06-236115-001
3-3.4.6 Pressure Operated Control Head, P/N 82-878737-000 and
P/N 82-878750-000
The Pressure Operated Control Head, P/N 82-878737-000, allows for pressure actuation of
HFC-227ea cylinders and is mounted directly on top of the HFC-227ea cylinder valve (see
Figure 3-19). The pressure operated control head, P/N 82-878750-000, offers a stackable
design and is used where an electric/mechanical control head actuation is also required on the
same cylinder (see Figure 3-20).
Figure 3-19. Pressure Operated Control Head
Figure 3-20. Stackable Pressure Operated Control Head
1.250-18
UNEF-3B
SWIVEL NUT
PISTON
1/8 in.-27 NPT
PRESSURE INLET
SET
OPERATED
2.19 in.
(55.6 mm)
1.50 in. HEX
(38 mm)
1.00 in. HEX
(25.4 mm)
1.250-18 UNEF-3A
CAP RETAINER
.125-27 NPT
PRESSURE INLET
PISTON
BODY
SET
OPERATED
STEM
1.250-18 UNEF-3B
3.480 in.
(88.4 mm)
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