Installation & Operation Manual
Proven Quality since 1892
ECON ball valves Fig. 7422, 7442, 7522, 7542, 7622, 7642, 7722, 7742
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Rev.4
Page 3
a. Re-tighten Packing
For maximum stem packing life, the proper packing adjustment procedure must be followed:
Should a leakage occur at the stem packing, retighten the stem nut (8)
Take care that the stem nut (8) is not tighten too much. Normally the leakage can be
stopped by simply turning the stem nut (8) by 30° to 60° clockwise.
b. Replacement of seats and seals
1) Disassembly of parts can be done while the valve is installed in the pipeline:
Before disassembly, make sure the pressure is released, to discharge any hazardous
media from the valve inside body cavity and to cool down the ball valve.
Remove all body bolts and washers (15+16) except one and after losing the remaining
one, the valve body can be swung out, and place valve in close position.
To swing the body can only be done at the Non Fire-Safe executions!!
Remove body gasket (5), seat rings (4) and ball (3). Inspect the ball accurately on
scratches, if any, the ball should be replaced.
When the stem packing needs to be replaced. Remove parts of upper parts in following
order: Lever nut/screw (19+20), lever (18), nut-lock-cap (7), stem nut (8), Belleville
washers (9) and gland (10).
Push stem (6) down into body cavity and remove, then remove upper washer (11B),
stem packing (11A) and lower washer (11B) from the body (1).
Also the O-ring (12) can now be taken out from the stem.
Ball valve, standard – non fire-safe execution.