Flowserve Valtek MaxFlo 3 - Manual (Page 4)

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User Instructions - MaxFlo 3 - VLEEIM7001-03 07.07
4
Size
vanne
Nominal
Pressure /
Rating
MaxFlo 3 flanged
Size x Length
MaxFlo3 flangeless
Size x Length
Inches Metric
Qty /
vanne
Inches Metric
Qty /
vanne
DN5
"
ANSI 50 / X .6 M X 65 8 / X 6.75 M X 70 4
ANSI 300 5/8 X 3. M6 X 80 8 5/8 X 6.88 M6 X 75 4
PN 6 M X 70 8 M X 75 4
PN 40 M X 70 8 M X 75 4
DN40
½"
ANSI 50 / X .88 M X 70 8 / X 7.50 M X 90 4
ANSI 300 3/4 X 3.6 M0 X 95 8 3/4 X 8.38 M0 X 5 4
PN 6 M6 X 80 8 M6 X 00 4
PN 40 M6 X 80 8 M6 X 00 4
DN50
"
ANSI 50 5/8 X 3.5 M6 X 85 8 5/8 X 8.38 M6 X 5 4
ANSI 300 5/8 X 3.5 M6 X 90 6
5/8 X 3.50 M6 X 90 4
5/8 X 8.50 M6 X 0 6
PN 6 M6 X 85 8 M6 X 5 4
PN 40 M6 X 85 8 M6 X 5 4
DN80
3"
ANSI 50 5/8 X 3.6 M6 X 95 8 5/8 X 0.5 M6 X 65 4
ANSI 300 3/4 X 4.5 M0 X 0 6
3/4 X 4.5 M0 X 0 4
3/4 X .00 M0 X 80 6
PN 6 M6 X 85 6
M6 X 85 6
M6 X 55 5
PN 40 M6 X 95 6
M6 X 95 6
M6 X 65 5
DN00
4"
ANSI 50 5/8 X 3.6 M6 X 95 6
5/8 X 3.6 M6 X 95 4
5/8 X .5 M6 X 95 6
ANSI 300 3/4 X 4.5 M0 X 5
6 3/4 X 4.5 M0 X 5 4
3/4 X .5 M0 X 35 6
PN 6 M6 X 85 6
M6 X 85 6
M6 X 85 5
PN 40 M0 X 00 6
M0 X 00 6
M0 X 300 5
DN50
6"
ANSI 50 3/4 X 3.75 M0 X 05 6
3/4 X 3.75 M0 X 05 4
3/4 X 3.5 M0 X 340 6
ANSI 300 3/4 X 4.88 M0 X 5 4
3/4 X 4.88 M0 X 5 8
3/4 X 4.00 M0 X 360 8
PN 6 M0 X 00 6
M0 X 00 4
M0 X 335 6
PN 40 M4 X 5 6
M4 X 5 4
M4 X 350 6
DN00
8"
ANSI 50 3/4 X 4.5 M0 X 0 6 3/4 X 4.5 M0 X 360 8
ANSI 300 7/8 X 5.5 M X 40 4
7/8 X 5.5 M X 40 4
7/8 X 5.9 M X 390 0
PN 6 M0 X 00 4
M0 X 00 8
M0 X 350 8
PN 40 M7 X 35 4
M7 X 35 8
M7 X 385 8
DN50
0"
ANSI 50 7/8 X 4.6 M X 0 4
ANSI 300 X 6.5 M4 X 55 3
PN 6 M4 X 0 4
PN 40 M30 X 50 4
DN300
"
ANSI 50 7/8 X 4.75 M X 0 4
ANSI 300 /8 X 6.75 M7 X 70 3
PN 6 M4 X 5 4
PN 40 M30 X 60 3
Table I: Line Flange Bolting Specifications
3 QUICK-CHECK
Before commissioning, check the control valve by fol-
lowing these steps:
3. Check for full stroke by varying the instrument signal
settings appropriately. Observe the plug position in-
dicator located on the actuator or the positioner. The
plug should change position with a smooth turning
movement.
3. Check all air connections for leaks. Tighten or replace
any leaking lines.
3.3 Check packing box bolting for proper tightness.
CAUTION: Do not overtighten packing. This can cause
excessive packing wear and high stem friction that
may impede shaft movement. After the valve has been
in service for a short period, recheck the packing-box
nuts. If the packing-box leaks, tighten the nuts just
enough to stop the leak.
3.4 Make sure the valve fails in the correct direction in case
of air failure. This is done by positioning the valve at
mid-stroke and turning off the air supply and observ-
ing the failure direction. If the action is incorrect, see
the section “Reversing the Air-action” in the instruc-
tions of the installation, operation and maintenance
manual of the appropriate actuator.
4 PREVENTATIVE MAINTENANCE
At least once every six months, check for proper oper-
ation by following the preventative maintenance steps
outlined below. These steps may be performed while
the valve is in-line and without interrupting service. If
an internal problem is suspected, refer to section “Dis-
assembling the Valve”.
4. Look for signs of gasket leakage through the end
flanges and bonnet. If necessary, re-torque flange,
bonnet and post bolting.
4. Examine the valve for damage caused by corrosive
fumes or process drippings.
4.3 Clean the valve and repaint areas of severe oxidation.
4.4 Check the packing-box for proper tightness. If there is
a persistent leak, change the packing after referring to
section “Valve Disassembly and Body Reassembling”.
CAUTION: Do not overtighten packing. This can cause
excessive packing wear and high friction that may im-
pede shaft movement.
4.5 If the valve is equipped with a lubricator, add lubricant
if necessary.
4.6 If possible, stroke the valve and check for smooth,
full-stroke operation. Unsteady shaft movement may
indicate an internal valve problem.
4.7 Check the calibration of the positioner. For further
preventative maintenance, see the instructions in the
installation, operation and maintenance manual for the
applicable positioner.
4.8 Ensure all accessories, brackets and bolting are se-
curely fastened.
4.9 If possible, remove air supply and observe actuator for
correct fail-safe action.
4.10 Check the actuator and all air connections for leaks.
4.11 If an air filter is supplied, check and replace the car-
tridge if necessary.