Veris Verabar V450 Installation Instructions - Manual (Page 3)

Gap (1/16" [1.5mm] typical
Tack Weld
Protect Threads
Complete Weld Access
Valve
Close
Nipple
Threadolet
5.3 Retract Sensor and Tighten Packing
Remove jam nuts and retaining nuts. Retract the
Verabar such that the tip of the sensor is flush with the
end of the access nipple (Figure 3). Tighten the packing
bolts on the packing gland.
Figure 3. Access Nipple
5.4 Weld Mounting Flange to Pipe
Mark the location where the Verabar is to be mounted.
Position the mounting flange over the center of the mark.
Using the appropriate weld gap (1/16” [1.5mm] typical),
tack weld the mounting flange into position. Note the
flange orientation per Figure 4). The bolt holes on the
flange should straddle the centerline of the pipe (2-holing
pattern). Finish welding the mounting flange to the pipe
per applicable codes (Figure 4).
Figure 4. Flange Orientation
5.5 Install Access Valve
Bolt the access valve to the mounting flange using the
gasket, studs and nuts provided. Orient the valve such
that the valve stem is parallel with the centerline of the
pipe (Figure 5). Verify that the access valve is properly
tightened, because beyond this point it will not be
serviceable without depressurizing the line.
Figure 5. Weld Gap
5.6 Drill Hole in Pipe
•
Install an appropriate Hot Tap Drilling Machine
(Figure 6). Place the access valve in the full open
position, and drill a hole in the pipe (hole sizes per
the chart below). Follow the instructions given by
the Hot-Tap Drilling Machine.
Sensor Size Hole Dia
V450-05 ½” (13mm)
V450-10 1” (25mm)
V450-15 1-1/2” (38mm)
•
After the hole has been completely drilled, retract
the Hot-Tap Drilling Machine. Shut off the access
valve prior to removal of the Hot-Tap Drilling
Machine.
Figure 6. Hot Tap Drilling Machine
Note: There are numerous Hot Tap Drilling Machines on
the market with various pressure and temperature
ratings. These devices can usually be rented at a local
utility company. For more information concerning Hot
Tap Drilling Machines, the following companies can be
contacted: Mueller Co., Decatur, IL (217) 423-4471 or
T.D. Williamson, Inc., Tulsa, OK (918) 446-1941.
5.7 Mount Sensor Assembly to Access
Valve
Orient the sensor such that the arrow labeled “flow” on
the instrument head is in the direction of the flow in the
pipe to within 3° (orientation per Figure 7). Bolt the
access nipple to the access valve using the gasket,
studs and nuts provided.
5.8 Vent Access Valve to Verify No
Leaks Are Present
With the instrument valves shut, slowly crack open the
access valve and verify there are no process fluid leaks.
If leaks are present, shut off the access valve and tighten
the leaky joint.
5.9 Insert Sensor Assembly
Warning: The flow rate must be decreased to the
amount stated on the Verabar tag: the maximum
insertion/withdrawn DP/flow limit.
•
The Verabar should be oriented such that the
arrow on the head is pointing in the direction of
flow. Orientation of flow arrow is per (A) or (B) in
Figure 7.
•
Attach a come-along or similar type device to the
come-along ring on the instrument head (Fig, 8).
•
Wrap the other end of the come-along around the
circumference of the pipe and firmly secure it.
•
Completely open the access valve.
•
Using the come-along or similar type device, insert
the Verabar until the tip of the sensor completely
bottoms on the opposite end of the pipe. Continue
to insert the sensor until firm resistance is met.
Figure 8. Come-along
COVER
TUBE