Flowserve Valtek VL-C Spring Cylinder Linear Actuators - Manual (Page 3)

54-3 Flowserve Corporation, Valtek Control Products, Tel. USA 801 489 8611
stem locknut by holding the flats on the actuator
stem and slide the piston and stem spacer off the
actuator stem. The spring guide should be removed
when using dual or heavy-duty spring designs.
NOTE: The dual spring configuration (Figure 3) has
two springs, one inside the other. Remove both
springs during this step.
7. For air-to-extend configurations, slowly loosen and
remove the actuator stem locknut and piston.
(Remove the piston and stem locknut together,
making sure the piston does not bind on the actua-
tor stem.) Next, remove the spring button, spring
and stem spacer.
WARNING: To avoid personal injury, be certain
the spring force is completely relieved before
removing actuator stem locknut.
8. Remove the piston quad-seal, piston stem O-ring
and yoke O-ring.
Figure 1: Air-to-retract Cylinder Actuator
NOTE: Item numbers correspond directly to actuator's bill of material. Refer to it for specific part numbers.
Yoke O-ring
(Item No. 271)
Piston Stem
O-ring
(Item No. 272)
Actuator Stem
Lock Nut
(Item No. 348)
Stem Clamp
No. 26906
(Valtek Positioner)
Tie Rod (4)
(Item No. 206)
Actuator Stem
O-ring
(Item No. 275)
Adjusting Screw
(Item No. 210)
Adjusting Screw
Gasket
(Item No. 248)
Quad-seal
(Item No. 271)
Stem Spacer
(Item No. 228)
Piston
(Item No. 225)
End Cap
(Item No. 207) Spring Button
(Item No. 227)
Yoke
(Item No. 201)
Stem Bellows
(Item No. 247)
Tie Rod Nut (4)
(Item No. 205)
Cylinder
(Item No. 202)
Actuator Stem
(Item No. 211)
Spring
(Item No. 229)
Bushing
(Item No. 253)
End Cap O-ring
(Item No. 227)
Bushing
(Item No. 253)