Badger Meter AHL - Hot Tap, High Pressure (2 to 30")" - Manual (Page 4)

Ellipse® Pitot Tube Meter, AHL Annular High Pressure Hot Tap Meter
Page 4 April 2014
PIPE ORIENTATION AND SENSOR MOUNTING
Gas or Liquid
with Proper
Bleeding
10° 10°
FLOW
Field Weld
H L
SCH/WALL MOD/β
DIA/ID
CAP
DP
TAG
FLOW METERS
W/O
SCH/WALL MOD/β
DIA/ID
CAP
DP
TAG
FLOW METERS
W/O
Liquid
10° 10°
FLOW
Field Weld
H L
SCH/WALL MOD/β
DIA/ID
CAP
DP
TAG
FLOW METERS
W/O
SCH/WALL MOD/β
DIA/ID
CAP
DP
TAG
FLOW METERS
W/O
Figure 2: Horizontal pipe installation
INSTALLATION INSTRUCTIONS, SINGLE SUPPORT
1 . Choose the proper location to install the AHL Annular High Pressure Hot Tap Meter using AGA/ASME standards (or
equivalent) . See Figure 2 , Figure 5 and Figure 6 .
2 . Grind the surface of the pipe where the AHL Annular High Pressure Hot Tap Meter is to be inserted to provide a clean area
for welding .
3 . Weld the supplied thread-o-let to the pipe using standard codes for your application (1/16 in . weld gap recommended) .
Take care to protect the threads during the welding process .
4 . Thread the close nipple into the weld connector . Install the supplied 3-piece isolating ball valve .
5 . Mount the high pressure drilling machine onto the ball valve . Open the ball valve . Drill a hole through the pipe wall
according to Table 2 .
Model/Sensor Weld Connector Drill Bit
AHL (7/8 in .) 1-1/4 in . 1-1/8 in .
AHL (1-1/4 in .) 1-1/2 in . 1-3/8 in .
Table 2: Single support drill bit size
OTEE: N There is no need for a drilling machine if it is not a hot tap installation or if the system is not pressurized .
6 . Withdraw the drill bit through the isolating ball valve, close the ball valve and dismantle the drilling machine . Make sure
there is no leakage at the valve and close nipple connections . The ball valve is to remain completely closed until step 9 .
7 . Install the cage nipple assembly and packing gland with the threaded rods assembly by threading it into the isolating ball
valve . Align the arrow on the sensor head with the direction of flow . See Figure 4 and Figure 5 .