Page 12
NOTE: If dimensions are not within this range, then ValvTechnologies, Inc. Engineering approval is required prior to assembly.
TABLE 3 (continued) BELLEVILLE SPRING HEIGHTS
R
E
-
ASSEMBLY
NOTE:
It is recommended that all internal carbon steel
valve parts and surfaces be coated with light motor oil.
NOTE:
The stems’ packing contact areas
shall be coated with Molybdenum Disul-
fide Anti-Seize Grease
.
1) Body is placed on its inlet
flange, clamped hub or welded
end with the body cavity facing up.
3) Stem is to be oriented
so that tongue flats are
parallel to bore.
2) Stem shall be inserted
through the stem hole
from the body cavity side.
NOTE:
Mark on top of stem should be on
the left of the valve, when looking down on
the stem and facing downstream.
4) Replace stem pack-
ing and gland.
NOTE:
Mark on gland will be on the left of the valve.
5) Install the gland springs with their conical ends
facing each other. Gland springs are hand tight-
ened.
NOTE:
Always coat both ends of gland nuts with a
copper-based anti-seize lubricant to achieve correct
stud tension and corrosion protection.
CAUTION! Only approved ValvTech-
nologies components should be used
in the re-assembled valve.
12-1/8 .760 .800
13-1/4 .790 .830
15-1/4 .890 .930
17-1/4 1.080 1.160
19-1/4 .860 1.020
21-1/4 1.390 1.460
