Veris Verabar V550 Installation Instructions - Manual (Page 3)

Figure 2. Verabar Model V550
Figure 3. Spring-Lock Cutaway
• Using the appropriate weld gap (1/16” [1.5mm]
typical), tack weld the mounting flange into
position (Figure 4).
Figure 4. Weld Gap
• Note the flange orientation per Figure 5. The bolt
holes on the flange should straddle the centerline
of the pipe (2-holing pattern).
Figure 5. Flange Orientation
• Remove the sensor and sensor flange, and finish
welding the weld coupling to the pipe per
applicable piping codes.
5.3 Insert Sensor
• With the follower and packing rings already in
place (factory assembled), insert the sensor into
the Spring-Lock body. Bolt the sensor flange to
the mounting flange with the gasket between the
flanges. The nuts should be tightened until the
gasket is completely crushed (the gasket
thickness should be approximately 1/8” [3mm]).
Insert the assembly until the tip of the sensor hits
the opposite side of the pipe. Note the three
studs must pass through the indicator ring and
the load plate.
• Align the head of the sensor so that the arrow
labeled “flow” on the head is in the direction of
the flow in the pipe to within 3° (see Figure 7).
Maintain the head in this position for the
remainder of the installation.
• Place the three lock washers and the three load
nuts on the studs and tighten. Tighten the load
nuts until the load plate is 0.050” (1.3mm) from
the indicator ring for –05 and –10 sensors. For
–15 sensors, the load plate should be 0.063”
(1.6mm) from the indicator ring (Figure 6). For
–05 sensors, this can be done by tightening all
the load nuts until the load plate just touches the
indicator ring and then backing off all the load
nuts one complete turn. For –10 and –15
sensors, this can be done by tightening all the
load nuts until the load plate just touches the
indicator ring and then backing off all the load
nuts ¾ of a turn. The load springs are now
properly set.
• Thread on the three jam nuts and tighten until
they are resting hand tight against the lock nuts.
Place a backup wrench on the load nuts to
prevent them from rotating. While not allowing
the load nuts to rotate, tighten the jam nuts 1/8
turn beyond hand tight.
• Using a torque wrench, tighten the three packing
bolts to the appropriate torque value listed in the
table below.
Sensor Size Packing Bolt
Torque (in-lbs)
Packing Bolt
Torque (ft-lbs)
–05 50 4.2
–10 100 8.3
–15 170 14.1
Note: The weld on the weld ring (Figure 6) should
not contact the top surface of the follower. If the weld
on the weld ring comes into contact with the follower,
the sensor will not be properly bottomed in the pipe.
If this occurs, consult the factory before proceeding.
Figure 6. Proper Spring Compression