Masoneilan 21000 Series Top Guided Globe Valve Instruction Manual | 11
Copyright 2023 Baker Hughes Company. All rights reserved.
Figure 2 – Typical Installation
Insert
3
/
4
" - 2" Valve Sizes
3" - 8" Valve Sizes
Insert
Retainer
Plug
Tip
Plug Tip
O-ring
Shank
Skirt &
Insert
Retainer
Set
Screw
Set
Screw
Flats
Flats
Figure 3 – Soft Seat Plugs (Optional)
8.3 High Pressure & Angle Design
(Figures 16 & 17)
Standard trim is used within these optional body configurations.
Refer to the applicable sections within this instructions manual.
9. Actuators
9.1 Types 87/88 Actuators
Assemble the pneumatic actuator onto the control valve using the
appropriate instructions for the specific actuator model and type.
Connect air pressure lines to the actuator ports to meet intended
operating mode (i.e., air-to-extend, air-to-retract, or double-
acting). For further details dealing with removal, maintenance,
assembly and adjustment, please refer to Instruction Manual
19530.
10. Bellows Seal Assembly
CAUTION
CAUTION
WARNING
DANGER
Since this is a sealing bellows, the plug stem should
never be turned under any circumstances.
There is a built-in anti-rotation feature, consisting of a double flat
surface machined on the plug stem that slides into a rectangular
slot machined in the upper bushing (30) of the bellows (see
Figure 19 – Section a).
CAUTION
CAUTION
WARNING
DANGER
IT IS IMPORTANT TO DISCONNECT THE ACTUATOR
FROM THE VALVE BEFORE CHANGING THE
ACTUATOR ROTATIONAL POSITION.
