Consolidated 2700 Series Safety Valve Instruction Manual
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© 2022 Baker Hughes Company. All rights reserved.
The Consolidated 2700 Series Safety Valve operates
on the principle that when steam pressure at the valve
inlet, acting over the area of the disc seat (C) and
bushing seat (A), generates a force that approaches
that produced by the spring, the valve opens. Minimal
leakage into the volume generated by the lower
adjusting ring (B) causes additional force over a larger
area acting on the disc holder (E), causing the valve to
“pop” open. Proper adjustment of the upper adjusting
ring allows the disc to go into full lift at overpressure.
When full lift is attained, lift stop (H) rests against the
yoke to prevent hunting, thus adding stability.
When the inlet pressure drops to the desired closing
pressure, the disc (C) moves downward, causing the
valve to close. The arrangement of the disc and its
complement of parts, that is disc holder (E), spindle
(G), disc collar (F), and lift stop (H), allow the disc
to seek its natural position for tight closure. The
Consolidated
Thermoflex
™ Disc design, by allowing
for the rapid equalization of temperature around the
valve seat, provides a degree of tightness designed to
exceed that offered by competitive valves.
X. Operating Principles
C
F
B
A
D
E
H
G
Figure 3: Valve Operation
