Badger Meter Model 9000 Valve - Manual (Page 4)

®
Due to continuous research, product improvements and enhancements,
Badger Meter reserves the right to change product or system specifica-
tions without notice, except to the extent an outstanding contractual
obligation exists.
BadgerMeter, Inc.
6116 E. 15th Street, Tulsa, Oklahoma 74112
(918) 836-8411 / Fax: (918) 832-9962
www.badgermeter.com
Copyright © Badger Meter, Inc. 2005. All rights reserved,
Please see our website at
www.badgermeter.com
for specific contacts.
REVERSING ACTUATOR ACTION
Changing from Air to open to Air to close can be
accomplished without additional parts and with standard
tools.
> Start by removing the actuator from the valve according
to previous instructions.
> Remove the rim screws.
> Separate the pressure cases.
> Lift out the springs.
> Remove the Nylon inserted lock nut [up travel stop inside
the yoke] from the stem.
> Grasp the piston and remove the entire stem/diaphragm/
piston assembly from the yoke.
> Using a 1/2" open end wrench, hold the actuator stem [in
the yoke area] and loosen the high strength hex screw in
the center of the piston.
> Loosen and remove the screw. Note the hardened thrust
washer under the head of the screw.
> Grasp the Piston, Diaphragm and Retainer plate and lift
all three parts off the stem and turn them over.
> Place the high strength hex screw [WITHOUT THRUST
WASHER] through the retainer plate, diaphragm, piston
and thrust washer.
> Thread the hex screw into the end of the actuator stem
and tighten by hand.
> Holding the opposite end of the stem with a wrench,
torque the high strength hex screw to 28-30 ft-lbs.
> Set the yoke [with lower pressure case still attached]
upright on the workbench.
> Set the springs inside the pressure case
> Carefully slide the threaded [end that connects to the
innervalve] actuator stem down through the center stem
bushing. Make sure each spring enters its own pocket and
that they are evenly spaced in each pocket [if only 3
springs are used].
> Place the upper case onto the lower case, keeping the
rim screw holes aligned with the holes in the diaphragm
and lower case.
> Re-install the 12 rim screw/nuts/washers and tighten
progressively to 6-8 ft-lbs or until the diaphragm just starts
to extrude from between the cases.
> Replace the up travel stop nut [thin nylon inserted lock
nut] into the actuator stem.
> Move the black plastic vent plug from the upper housing
to the lower housing.
Proceed with re-mounting the actuator to the valve
assembly.
NOTE: Since the springs are keeping the stem at full
travel, air does not need to be applied to the actuator at
this time.
> Once mounted, connect air to the upper case and make
zero adjustments.
The stem length should be adjusted so that at aprx. 14.75
psi, the innervalve touches the seat.
> Reduce the signal to 3 psi
> Adjust the up travel stop nut where it just touches the
underside of the yoke, providing an up travel limit.
DO’S and DON’TS
• With air to open actuators, DO NOT attempt to adjust
spring tension without first raising the innervalve off the
seat.
ANY rotation of the innervalve while seated will damage the
seating surface.
• DO NOT use TFE tape on positioner supply air lines. Small
pieces of the tape can plug the positioner pilot and cause
malfunctions or improper response.
• To re-orient the actuator [to make piping the air line more
suitable].
> Raise the innervalve off the seat [if Air to open].
> Loosen the yoke lock nut.
> Orient the actuator as desired.
> Re-tighten the yoke lock nut.
> Lower the innervalve to the seated position.
Badger ® is a registered trademark of Badger Meter, Inc.
Krytox ® is a registered trademark of E.I. du Pont de Nemours and Company.
Nylatron ® is a registered trademark of The Polymer Corporation.