Preliminary Settings I-2 / I-3 Valve
8 ©Vertical Express
Preliminary Settings
(continued)
Low Pressure Setting
OUT = Counterclockwise (CCW), IN = Clockwise (CW)
1. Turn the low pressure adjustment screw OUT 1
3
/
4
" beyond the cover plate. See Figure 2.
2. Turn the low pressure adjustment screw IN by hand until it touches the regulator piston.
3. Turn the up leveling adjustment screw OUT until it stops.
4. Turn the up leveling adjustment screw IN 4 turns.
Adjustment Needles
To make adjustments, do not loosen the nuts on the adjustment needle stems. The nuts
must be snug against the valve body at all times.
1. Turn the up start, up stop, and up slowdown adjustments IN to the fully closed position.
See Figure 2.
2. Turn the up start adjustment OUT 9 turns.
3. Turn the up stop adjustment OUT 3 turns.
4. Verify that the up slowdown adjustment remains closed.
Figure 2 - Valve Adjustments
Low Pressure
Adjustment
Up Leveling
Adjustment
Up Start
Adjustment
Up Stop Adjustment
Up Slowdown Adjustment
Down Start
Adjustment
Down Stop
Adjustment
Lowering and Leveling
Speed Adjustment
Down Slowdown
Adjustment
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