Reference Manual

1−3
Figure 1-2. Flanged Angle-Style
Control Valve Body
W0971
Figure 1-3. Bar Stock Valve Body
W9756
cage-guided trim, bolted body-to-bonnet
connection, and others. Flanged versions are
available with ratings to Class 2500.
Balanced-Plug Cage-Style Valve
Bodies
This popular valve body style, single-ported in the
sense that only one seat ring is used, provides the
advantages of a balanced valve plug often
Figure 1-4. High Pressure Globe-Style
Control Valve Body
W0540
Figure 1-5. Valve Body with Cage-Style Trim,
Balanced Valve Plug, and Soft Seat
W0992-4
associated only with double-ported valve bodies
(figure 1-5). Cage-style trim provides valve plug
guiding, seat ring retention, and flow
characterization. In addition, a sliding piston
ring-type seal between the upper portion of the
valve plug and the wall of the cage cylinder
virtually eliminates leakage of the upstream high
pressure fluid into the lower pressure downstream
system.