Nor-Cal Linear Gate Valve - Manual (Page 8)

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Nor-Cal Products, Inc., 1967 South Oregon St., Yreka, CA 96097 • Toll Free 800-824-4166 or 530-842-4457 • www.n-c.com Rev. 1-2013
III. Actuator O-ring
1.5” – 21” GATE VALVES STD AND MSB
A. Tools and Materials Required:
1. Spanner Wrench
2. Allen Wrench Set
3. O-Ring Pick
4. Pick (for R-Ring removal)
5. Needle-Nose Pliers
6. Small Standard Screw Driver
7. Actuator O-Rings
8. Grease for Bellows O-Ring: Apezion L
9. Vacuum Grease
10. IPA
11. Heat Gun
12. Lock-Tite
B. Procedure:
1. Actuate valve to Gate Open position.
2. For safety, remove air to actuator.
3. Remove Actuator Cover. (2 screws)
4. Remove Actuator Top. (6 screws)
5. Measure the distance between the top of the Piston and the top of the Drive Shaft.
(This will be helpful later during reassembly and adjustment)
6. Remove the Jam Nut from the Drive Shaft. (Heat gun may be needed to melt the Lock-Tite on the thread)
7. Using a spanner wrench, turn Piston counterclockwise to remove from Actuator Housing.
8. Remove O-Ring from top of Drive Shaft.
(Continued Next Page)
FIGURE 6: DRIVE SHAFT O-RING
DRIVE SHAFT O-RING
NOTE: REMOVE THIS
O-RING FIRST BEFORE
REMOVING THE
ACTUATOR HOUSING