Powers 595 Series 11 Self-Operating Temperature Regulators - Packing - Manual (Page 4)

Form TB-237 v4 0510 Page 4
COMPLETE REPACKING...
1. Disassemble the actuator from the valve body assembly.
2 Remove the nuts from the valve stem.
3. Remove the packing gland nut from the bonnet.
Then disassemble the bonnet from the valve body. If the
stem remains with the bonnet, on a normally open valve
only slide the stem out of the bonnet.
4. Examine the stem, replace if damaged.
5. Remove the top three packing rings, the packing spacer,
and the lower packing ring with a pointed rod or pick,
6. If a stem bearing is provided, examine it and replace if
damaged.
7. Clean packing chamber so it is free of dirt and grease.
8. To reassemble...Slide the bonnet over the stem and
screw the bonnet into the valve body.
9 If used, slide the stem bearing over the stem and into the
bonnet, make sure it is properly nested in the pocket of
the bottom of the bonnet. Use an epoxy type adhesive
(required only on ST valve) to hold the bearing in place.
10. With the valve stem held in the closed position, carefully
place a packing ring, the packing spacer, and the
remaining three packing rings over the stem in the order
shown (Figure 1). Individually tap each packing ring into
the bonnet as far as possible.
CAUTION: The splits in the packing rings must be
staggered to provide a good seal.
11. Holding the stem in the closed position, tighten the
packing gland nut sufficiently to fully compress the
packing rings into the bonnet. Loosen the packing gland
nut to readjust to “finger tight” only.
12. Pack the bonnet with recommended lubricant.
13. Reassemble actuator to valve body.
IMPORTANT: Set stem length correctly.
CALIFORNIA PROPOSITION 65 WARNING
WARNING: This product contains chemicals
known to the State of California to cause cancer
and birth defects or other reproductive harm.
(California law requires this warning to be given
to customers in the State of California.)
For more information: www.wattsind.com/prop65
© March, 2005 Powers, a division of Watts Water Technologies, Inc.
USA Phone: 1.800.669.5430 • Fax 1.847.824.0627
Canada Phone: 1.888.208.8927 • Fax 1.888.882.1979
www.powerscontrols.com
Form TB-237 v4 0510 EDP# 6512234 Printed in U.S.A.