Badger Meter AF - Flanged (2 to 120")" - Manual (Page 6)

9 . Install the instrument valves (optional) at the AF Ellipse head connections . Make sure the valves are FULLY CLOSED to
prevent them from leaking during startup .
INSTALLATION INSTRUCTIONS, DOUBLE SUPPORT
1 . Follow steps 1 through 5 in “Installation Instructions, Single Support” . At 180° from and on the same plane as the
previously drilled hole, grind the surface of the pipe to provide a clean area for welding . Drill a hole and deburr, especially
on the inside of the pipe . The hole used for the double support should be sized according to Table 3 .
Model / Sensor Weld Connector Drill Bit
AF (7/8") 1/2" 1/2"
AF1 (1-1/4") 1" 7/8"
AF2 (2-1/4") 3" 2-3/4"
Table 3: Double support drill bit size
2 . Weld the double support weld-o-let or thread-o-let making sure that it is centered with the drilled hole and the low point
on the bottom of the weld-o-let or thread-o-let is in line with the pipe centerline (1/16" weld gap recommended) .
3 . Install the AF Ellipse sensor through the two holes . Make sure that the double support pin passes through the guide ring .
See Figure 6 .
Models AF & AF1
Ellipse Sensor
Thread-o-let
Double Support
Pin
Guide
Ring
Plug
Weld-o-let
Ellipse Sensor
Double Support
Pin
Guide
Ring
Cap
Model AF2
Figure 6: Double support pin
4 . Align the arrow located on the sensor head in the direction of flow as in step 7, “Installation Instructions, Single Support” on
page 5 .
5 . Install and tighten all nuts and bolts (provided) . Bolt torques should be in accordance with applicable standards .
6 . Install the plug into the end of the double support thread-o-let* (weld on cap for AF2) . Tighten the plug to
prevent leakage .
OTEE: N * Use a thread sealant suitable for the process when making this connection .
Ellipse® Pitot Tube Meter, AF Annular Flanged Meter
Page 6 April 2014