Fisher 461 Instruction Manual page 6

461 Valve
June 2017
1. Isolate the control valve from the line pressure, release pressure from both sides of the valve body, and drain the
process media from both sides of the valve. If using a power actuator, also shut off all pressure lines to the power
actuator, release all pressure from the actuator. Use lock‐out procedures to be sure that the above measures stay in
effect while you work on the equipment.
2. Remove the cap screws in the stem connector, and separate the two halves of the stem connector. Then exhaust all
actuator pressure, if any was applied, and disconnect the actuator supply and any leakoff piping.
Figure 3. Packing Arrangements
12A8160‐A
PTFE V‐RING
SINGLE PACKING
UPPER WIPER (KEY 16)
PACKING FOLLOWER
(KEY 29)
FEMALE ADAPTOR
(KEY 22)
V‐RING (KEY 19)
MALE ADAPTOR
(KEY 21)
LANTERN RING (KEY 30)
PACKING BOX RING
(KEY 38)
12A7839‐A Sht 1
LOWER WIPER
(KEY 39)
PTFE V‐RING
DOUBLE PACKING
NOTES:
0.102 mm (0.004 INCH) THICK SACRIFICIAL ZINC WASHERS. USE ONLY ONE BELOW EACH GRAPHITE RIBBON RING.
1
HAS THE APPEARANCE OF A WOVEN OR BRAIDED RING.
2
FOR A FLAT BOTTOM PACKING BOX, THESE PARTS ARE NOT NEEDED.
3
C0747‐1
6
UPPER WIPER (KEY 16)
PACKING FOLLOWER
(KEY 29)
}
FEMALE ADAPTOR
(KEY 22)
KEY 22
V‐RING (KEY 19)
MALE ADAPTOR
(KEY 21)
WASHER (KEY 18)
SPRING (KEY 17)
PACKING BOX RING
3
(KEY 38)
LOWER WIPER
3
(KEY 39)
GRAPHITE RIBBON AND FILAMENT
}
KEY 22
1
1
3
14A3414‐C
3
GRAPHITE RIBBON AND FILAMENT
DOUBLE PACKING
PACKING FOLLOWER
(KEY 29)
GRAPHITE RIBBON
PACKING RING (KEY 20)
GRAPHITE FILAMENT
1
PACKING RING (KEY 20)
LANTERN RING
(KEY 30)
PACKING BOX RING
(KEY 38)
14A3412‐C
SINGLE PACKING
PACKING FOLLOWER
(KEY 29)
GRAPHITE RIBBON
PACKING RING (KEY 20)
GRAPHITE FILAMENT
PACKING RING (KEY 20)
2
LANTERN RING
(KEY 30)
PACKING BOX RING
3
(KEY 38)
Instruction Manual
2
3
UPPER WIPER
(KEY 16)
PACKING
FOLLOWER
(KEY 29)
PACKING RING
(KEY 20)
LANTERN RING
(KEY 30)
PACKING BOX RING
(KEY 38)
12A8163‐A
PTFE/COMPOSITION
DOUBLE PACKING
D100714X012
3