DeZURIK
3-20” BAW AWWA Butterfly Valves
August 2013
Page 7
D10386
Installation
(Continued)
Installing All Valves
1. Thoroughly clean the pipeline, valve and flanges of all debris, which could damage the seat,
disc or bearings.
2. Open the valve, clean the seat and sealing edge of the disc, then apply a paint-like coating of an
NSF 61 approved lubricant (such as Dow Corning 111 or Phoenix 505) to the seat.
3. Close the valve and tighten the bolts evenly in a crisscross pattern.
Note:
Ensure the pipeline, valve and flanges are properly aligned. Do not use the valve to force the pipeline into
position.
Due to varying conditions during shipment, storage, handling and installation, it is recommended that
each valve be tested while the valve is accessible in the pipeline.
Operation
Turning the valve shaft clockwise closes the valve. The valve is fully closed when the disc is centered
on the seat; valve is fully open when the disc is 90° counterclockwise from the closed position.
Disc Position Indicator
The indicator notch on top of the valve shaft corresponds with the seat side of the disc. The location of
the indicator notch is shown in Figure 1.
Figure 1—Disc Indicator Location
Position Stops
The valve actuator is connected to the valve shaft and positions the disc at the open, closed or
intermediate positions. Installed DeZURIK actuators come with the position stops pre-adjusted. For
other actuators, refer to actuator instructions to adjust the position stops.