Instruction Manual
D101642X012
ENVIRO-SEAL Sliding-Stem Valves
July 2017
4
Table 2. Fisher Sliding-Stem Product Availability for ENVIRO-SEAL Duplex Packing
VALVE
(1)
STEM DIAMETER, mm (INCHES)
9.5
(3/8)
12.7
(1/2)
15.9
(5/8)
19.1
(3/4)
25.4
(1)
31.8
(1-1/4)
50.8
(2)
A X X - - - X X X - - -
DBQ - - - X - - - X X X - - -
easy-e (ED, ES,
ET, EW, EZ)
X X - - - X X X - - -
EH - - - X - - - X X X X
FB - - - - - - - - - - - - X X X
HP - - - X - - - X X X - - -
HS - - - X - - - X X - - - - - -
SS-83 - - - - - - - - - X X X - - -
YD X X - - - X X X - - -
YS X X - - - X X X - - -
1. Contact your Emerson sales office for valves not listed.
Table 3. Fisher Sliding-Stem Product Availability for ENVIRO-SEAL PTFE and Graphite ULF Packing Systems
VALVE
(1)
STEM DIAMETER, mm (INCHES)
STEM DIAMETER,
mm
9.5
(3/8)
12.7
(1/2)
15.9
(5/8)
19.1
(3/4)
25.4
(1)
31.8
(1-1/4)
50.8
(2)
12 mm 16 mm
A X X - - - X X X - - - - - - - - -
CAV4 - - - - - - - - - X X X X - - - - - -
D - - - X - - - - - - - - - - - - - - - - - - - - -
DA - - - X - - - - - - - - - - - - - - - - - - - - -
DBQ - - - X - - - X X X - - - - - - - - -
DBQ-NS - - - X - - - - - - - - - - - - - - - - - - - - -
easy-e (ED,
ES, ET, EW,
EZ)
X X - - - X X X - - - - - - - - -
E-NS - - - X - - - - - - - - - - - - - - - - - - - - -
EH - - - X - - - X X X X - - - - - -
ENA - - - - - - - - - - - - - - - X X - - - - - -
ET-C - - - X - - - X X - - - - - - - - - - - -
EWT-C - - - X - - - X X - - - - - - - - - - - -
EZ-C X X - - - X - - - - - - - - - - - - - - -
FB - - - - - - - - - - - - X X X - - - - - -
HP - - - X - - - X X X - - - - - - - - -
HS - - - X - - - X X - - - - - - - - - - - -
SS-79 - - - - - - - - - X - - - - - - - - - - - - - - -
SS-83 - - - - - - - - - X X X X - - - - - -
SS-85 - - - X - - - - - - - - - - - - - - - - - - - - -
SS-95 - - - X - - - - - - - - - - - - - - - - - - - - -
SS-98 - - - - - - - - - - - - X - - - - - - - - - - - -
YD X X - - - X X X - - - - - - - - -
YS X X - - - X X X - - - - - - - - -
1. Contact your Emerson sales office for valves not listed.
If you are installing the system in a valve that is still connected to an actuator, remove the actuator from the valve to
provide sufficient space to install the packing assembly. If a spring-return actuator is used, it is possible that
disconnecting the stem connector will allow the spring to force the actuator to the end of its travel. Be sure the
actuator spring is resting on its travel stop. Refer to the appropriate valve and actuator instruction manuals to remove
the actuator.
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