Badger Meter Vortex Meters - Manual (Page 22)

22 09-VRX-UM-00408 07/12
Figure A5 shows a sample hot tap installation. With the exception of the spool piece, which must be a minimum of 6 inches
(152 mm) in length, all of the dimensions are suggestions only. Actual dimensions may vary depending on customer’s own hot
tap confi guration.
To calculate the required insertion fl ow meter stem
length for the installation:
For pipe diameters less than 24 inches (609 mm):
Calculate the distance from the center line of
the pipe to the top of the fl ow meter mounting
fl ange.
For pipe diameters greater than 24 inches (609 mm):
Calculate the distance from the top of the fl ow
meter fl ange to a point ¼ of the pipe diameter.
Where a flow profile is desirable, calculate the
distance from the bottom of the pipe to the top
of the fl ow meter mounting fl ange and subtract 2
inches (50.76 mm). Round this distance up to the
next largest 12 inches (305 mm) increment. This is
the stem length that should be ordered.
DANGER - Caution should be used
when inserting or retracting at
pressures exceeding 60 PSIG (4.14
BARg).
FIGURE A5 - HOT TAP DIMENSIONS
10.75" Maximum
at Maximum
Insertion
4.50" Maximum
Retracted
Standard ANSI
2 Inch 150 Lb. Flange
Determined
By Stem
Length
Determined
By Stem
Length
2" Full Port
Valve
Flow
4.50"
Maximum
Spool Piece
4.00" Minimum
RUN PROGRAM RELAY 1 RELAY 2
5.75"
7.00"
RUN PROGRAM
RELAY 1 RELAY 2