Badger Meter Research Control Valve - Manual (Page 4)

1 .With innervalve off seat, use two open-end wrenches
(1/4" for 1/4" valves and 3/8" for 1/2", 3/4", and 1”
valves), one holding the stem connector in position,
and with the other loosen the topworks stem nut above
travel pointer; remove travel pointer.
2. With valve body in vise (clamp on ends), loosen the
yoke to bonnet locknut (yoke locknut) with a slotted
end wrench (7/8" boxed end for 1/4" valves, 1-1/8" for
1/2", 3/4" and 1" valves), and unscrew completely.
3. With the open-end wrench, turn the stem connector
counterclockwise (right hand threads), unscrewing from
the topworks stem completely. (Fig. 1)
4. Remove topworks from body bonnet assembly.
5. With the valve body in vise, loosen and unscrew
bonnet from body using open-end or crescent wrench.
6. Remove seat from body using a deep thin wall socket
and T-handle assembly (3/8" hexagon for 1/4" valves,
5/8" hexagon for 1/2", 3/4" hexagon for 3/4"valves, and
15/16" hexagon for 1” valves).
Some purchased long set sockets
(heavyduty) will not fit body cavity without turning
O.D. to fit past body threads.
(Fig. 2)
7. Most standard innervalves “K” through “P18” in 1/4"
valves and “F” through the “P” series trim in 1/2" valves
can be removed upward from the bonnet through the
packing, all others by removing stem connector and
withdrawing downward through the packing. When
removing the larger trims down through packing, it is
best to withdraw stems until threaded portion is in
contact with packing and then rotate stem and allow
the threads to screw through the packing area.
Installing Trim Sets
(Matching pairs do not separate)
With all parts cleaned in an appropriate solvent, install
desired trim set in body bonnet assembly as follows:
1. With trim as shown in Figure 3, apply a coating of
Neolube (graphite dry film lubricant), process permitting,
to the threads and seating surfaces of the seat. Air dry
for 30 seconds. Do not use any thread sealing
compounds containing metal particles. NOTE: New
replacement innervalves, come pre-coated with NeoLube
except those specially cleaned.
2. Remove seat from innervalve and place hex first into
the long set socket wrench and T-handle assembly.
NOTE: Tissue paper can be stuffed into the socket to
prevent seat from falling through.
3. With body inverted in palm of hand as shown in
Figure 4, start seat threads into body, invert body and
tighten seat. Do not over-torque. Standard torque figures
using new parts at the factory are: 10/11 ft/pounds on
“P” trim seats, 8.5 ft/pounds on other 1/4" seats, 35 ft/
pounds on 1/2", 3/4" and 1” seats. It should be noted
that torque figures are applicable to new parts and may
not be the same for used parts. For longest service life,
on new or used parts, it’s best to use procedure detailed
in paragraph 4.
FIG. 2
FIG. 3
FIG. 4
2