Masoneilan 49000 Series Energy Management Control Valves | 11
Copyright 2020 Baker Hughes Company. All rights reserved.
Plug Stem Diameter
N1 (turn)
in
mm
1”
1.25
0.09
2.3
3/4”
1.25
0.08
2.0
Table 2: Type 88 , Air to Open – Valve Seating
• Recommended spare part (some parts may not be
applicable to all designs)
Note: Actual parts list may differ according to specific valve
supplied
Item No.
Description
1
Body
2
Bonnet
3
Bonnet Flange
4
Cage (V-LOG Stack)
5
Seat Ring
6
Plug
7
Guide Bushing
8
Plug Stem
9
Plug Pin
10
Gasket
11
Metal Seal (Bridgeman)
12
Body Bonnet Stud
13
Body Bonnet Hex Nut
14
Balance Seal
15
Packing Ring
16
Packing Follower
17
Packing Flange
18
Packing Stud
19
Packing Nut
20
Anti-Extrusion Ring
21
Disc Spring
22
Backup Ring
•
•
Actuation
Type 87/88 Multi-Spring Diaphragm Actuators
Connecting Type 87 (Air to Extend) No. 10, 16 and 23 Actuators
(Figure 9a & 9b)
1. Install actuator on the valve body with drive nut (33). Tighten
drive nut
2. Position top and bottom stem connectors (2 and 4) and replace
the two socket head cap screws (5).Turn the plug stem as far
as possible into lower part of the stem connector (2 or 6) refer
to Table 3 and figure 11b for stem connector positioning.
3. Pneumatically or with the handwheel, stroke the actuator to
the rated spring range or stroke (if using the handwheel).
4. Using the stem lock nuts (1) unscrew the plug stem until the
plug touches the seat.
CAUTION
CAUTION
WARNING
DANGER
DO NOT TURN the plug against the seat as damage to
parts can occur
5. Release the pressure in the actuator or back off the handwheel
to raise the stem.
Connecting Type 88 (Air to Retract) No. 10, 16 and 23 Actuator
(Figure 10a & 10b)
1. Connect manual loading panel tubing to lower diaphragm case
2. Apply required air pressure to completely retract stem (10).
3. Install actuator on the valve body with drive nut. Tighten the
drive nut.
4. Apply initial air pressure and unscrew the top stem connector
(4) in accordance with dimension “X” in Table 3 and figure 10b.
CAUTION
CAUTION
WARNING
DANGER
DO NOT TURN the plug against the seat as damage to
parts can occur
5. Release air pressure
6. Using stem lock nuts (1), unscrew the plug stem until the plug
touches the seat.
7. Pneumatically or with the handwheel, stroke the actuator to
raise the plug off the seat. Unscrew the plug stem one full turn
and lock the stem in place with the lock nut(s) (1) against the
stem connector or flange (2 or 6).
8. Line up the travel scale (9) with the pointer and check actuator
for proper operation.
