Seametrics AG2000 - Gasket and Flange Assembly

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AG2000 INSTRUCTIONSINSTALLATION
Installing the Gaskets.
1. Select a suitable full-face gasket.
• Only use at compressible gaskets (either pliable
or hard ber will work).
• Use a material compatible with the uid you will
be using.
• Thickness should be 1/8” - 1/4” (3 - 6 mm),
depending on the atness of the pipe ange
surface.
• Inner diameter must be larger than opening in
ow meter.
2. Be sure all mating surfaces are smooth and free of
debris.
3. Install gaskets on each end of meter as shown in
diagrams at right.
Tightening Flange Bolts.
NOTE: Mating pipe anges must be ANSI 150# full face (FF)
and/or raised face (RF).
1. Tighten ange bolts in an alternating pattern.
a. Tighten left ange bolt-1 to 20% recommended
torque.
b. Tighten right ange bolt-1 to 20% of
recommended torque.
c. Repeat steps a and b for each bolt in an
alternating order, such as shown at right,
tightening to 40%, then 60%, then 80%, and
then 100%.
2. Test for leaks.
3. If needed, tighten further in 10% increments until
leaking stops. DO NOT over-tighten. Over-tightening
can cause serious damage to the ow meter.
4. Recheck after 24 hours, adjusting if needed.
Santoprene Liner
Pipe Size ft-lb Nm
3” 25 34
4” 20 27
6” 42 57
8” 65 88
10” 73 99
12” 97 132
SUGGESTED FLANGE BOLT TORQUE
GASKETS
Gaskets are required at all
junctions.
CAUTION!
Improper tightening sequence
can cause serious damage to
the ow meter.
• Do not tighten one side at a time.
• Do not tighten each bolt completely
at one time.
1
2
3
4
5
6
7
8
Suggested tightening sequence.
Gaskets
Gaskets
Grounding
Rings
Installation without grounding rings
Installation with grounding rings