Data Sheet

A31A Valve
D500191X012
Product Bulletin
21.1:A31A
October 2013
5
Figure 3. Blowout Protection
PACKING
FLANGE
ANTI-BLOWOUT
FLANGE
SHAFT
SHOULDER
SHAFT
HEX NUT
STUD
PACKING
FOLLOWER
HEX NUT
TYPICAL PTFE V-RING
PACKING
HEX NUT
PACKING
FLANGE
SHAFT
SHOULDER
STUD
HEX NUT
ANTI-BLOWOU
T
FLANGE
SPRING PACK
ASSEMBLY
PACKING
SET
ANTI-EXTRUSION
RING
PACKING
BOX RING
LUBRICANT
A7090
STANDARD PACKING ARRANGEMENT ENVIRO-SEAL ARRANGEMENT ( PTFE SHOWN)
Figure 4. Typical Valve Assembly
A7091
SEEFIGURE1
DISC
UPPER SHAFT
SEAL RETAINING RING
BEARINGS
ANTI-BLOWOUT GLAND
THRUST BEARING
DISC PIN
THRUST
BEARING
ANTI-BLOWOUT
FOLLOWER
KEYED SHAFT
GASKET
GASKET RETAINER
VALVE BODY