Emerson Fisher ENVIRO-SEAL Instruction Manual page 5

Instruction Manual
D101643X012
Figure 2. Typical ENVIRO‐SEAL Rotary Packing Arrangements with PTFE Packing for Fisher Vee‐Ball, Eccentric Plug,
A41, and 8560 Valves
42B8445‐C
42B8445‐C
SINGLE PTFE PACKING
OPTIONAL DEEP PACKING BOX
V500
NOTES:
APPLY LUBRICANT
1
THESE TWO SURFACES MUST REMAIN PARALLEL AS YOU ALTERNATELY AND EVENLY TIGHTEN THE PACKING NUTS (KEY 101)
2
Note
ENVIRO‐SEAL PTFE packing systems can be used in either vacuum or positive pressure service. It is not necessary to reverse
ENVIRO‐SEAL PTFE packing components in vacuum service.
Make sure that the Belleville springs are stacked properly and packing box parts are assembled in the correct order (see figure 6).
Packing parts cannot function properly if the Belleville springs or other packing parts are not stacked correctly.
5. With the shaft in place in the valve, install the packing parts into the valve packing box.
Note
Be sure to install the packing rings in the sequence shown in figures 2 through 5.
SINGLE PTFE PACKING
STANDARD DEPTH BOX
42B8445‐C
DOUBLE PTFE PACKING WITH LEAKOFF
OPTIONAL DEEP PACKING BOX
V500, CV500
ENVIRO-SEAL System - Rotary Valves
14B0095‐A
STACKING ORDER
PTFE PACKING RINGS
42B8445‐C
SINGLE PTFE PACKING, OUTBOARD
STANDARD DEPTH BOX
8510B
February 2019
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