Fisher 461 - Page 7

Instruction Manual
D100714X012
461 Valve
June 2017
7
Figure 4. ENVIRO-SEAL and HIGH-SEAL Packing Systems
W7018
W8532-1
FOLLOWER
PACKING
BOX
STUD
PACKING
SPRINGS
W8533-1
PACKING
BOX
STUD
FOLLOWER
PACKING
SPRING
W5803-3
SPRINGS
ANTI-
EXTRUSION
RING
LANTERN
RING
PACKING
BOX
STUDS
PACKING
RING
VALVE
BONNET
TYPICAL ENVIRO-SEAL PACKING SYSTEM
WITH PTFE PACKING
TYPICAL ENVIRO-SEAL PACKING SYSTEM
WITH GRAPHITE ULF PACKING
TYPICAL HIGH-SEAL PACKING SYSTEM
WITH GRAPHITE ULF PACKING
TYPICAL ENVIRO-SEAL PACKING SYSTEM
WITH DUPLEX PACKING
1
FOR A FLAT BOTTOM PACKING BOX, THE PACKING BOX RING AND LOWER WIPER ARE NOT NEEDED.
1
1