Nor-Cal Linear Gate Valve - Manual (Page 5)

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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
II. Bellows, Pneumatic Standard Cycle Only
1.5” – 21” GATE VALVES
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. Vent station and pump corresponding to Gate Valve to atmosphere.
2. Actuate valve to Gate Open position.
3. For safety, remove air to actuator.
4. Remove Actuator Cover. ( 2 screws)
5. Remove Actuator Top. (6 screws)
6. 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)
7. Remove the Jam Nut from the Drive Shaft. (Heat gun may be needed to melt the
Lock-Tite on the thread)
(Continued Next Page)
Figure 3: BELLOWS AND PISTON
SHOWN WITH
ACTUATOR HOUSING
REMOVED
BELLOWS
PISTON
DIMENSION “A”