DiskFlo Control Valves
6
Remounting Actuator to Valve
It needs to be verified that the disc rotation matches the actuator
rotation and complies with the air failure requirements, before
mounting a Valflo actuator on the valve body.
For mounting the actuator, the procedure is as follows:
The entire actuator assembly needs to Slide onto the shaft. If
needed on Valflo actuator designs wedge the splined lever
arm apart to loosen it on the shaft splines. Marks provided on
the end of the shaft and on the lever arm should be aligned
for full rotation of the disc.
The actuator yoke needs to be bolted to the valve body.
Ensure that the stroke indicator plate is positioned properly
for accurately indicating the rotation of the valve.
Align the actuator lever arm on the shaft so the actuator stem
is centered in the transfer case. The linkage bolt needs to be
firmly tightened.
CAUTION : Applying air to the actuator without the cover
plate installed; may cause damage to the unsupported
shaft.
Until the disc is parallel to the seat surface, but not resting on
body disk stop, adjust the actuator stroke stop bolts.
CAUTION :
To prevent the valve disc from overstroking,
the actuator stroke stop bolts must be properly adjusted.
The valve shaft may be twisted or sheared off if incorrectly
adjusted.
The valve in line needs to be installed as mentioned in
"Installation" section.
1.
2.
3.
4.
5.
Style E
Air-to-close
Fail- open
Air-to-close
Fail- open
Air-to-open
Fail-close
Air-to-open
Fail-close
Shaft Downstream
Style F
Shaft Downstream
Style G
Shaft Downstream
Style H
Shaft Upstream
NOTE: Styles F and H may
require a heavy-duty spring
to achieve failure.
Right-hand Mounting
Facing Downstream
Left-hand Mounting
Facing Downstream
FLO
W
O
S
S
O
S
S
O
S
S
O
S
S
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
Style G
Style H
Style F
Style E
Left-hand
Mounting
Right-hand
Mounting
NOTE: Orientation 1 is standard. Orientation positions
2 and 4 are not available in some actuator sizes.
Contact Us.
Figure 4 : Transfer Case Mounting
