DeZurik G-SERIES Manual
Cylinder operated actuator
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- Instruction (19 pages) ,
- Manual (17 pages) ,
- Instructions manual (13 pages)
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Summary of Contents for DeZurik G-SERIES
- Page 1 DEZURIK CYLINDER OPERATED G-SERIES ACTUATOR USED ON BUTTERFLY VALVES D10082 Instruction October 2012 DeZURIK, Inc. Sartell, Minnesota USA | Phone: 320-259-2000 | www.dezurik.com | info@dezurik.com...
- Page 2 Inspection Your G-Series Cylinder Actuator has been packaged to provide protection during shipment; however, it can be damaged in transport. Carefully inspect the unit for damage upon arrival and file a claim with the carrier if damage is apparent.
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Page 3: Table Of Contents
DeZURIK Cylinder Operated G-Series Actuator Table of Contents Description - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -... -
Page 4: Description
The supply pressure to the cylinder should be between 50 and 100 psi (344 and 689 kPa). Lubrication The G-Series Cylinder Actuator has been lubricated at the factory and requires no routine lubrication. If the actuator is disassembled, lubricate the rack, rack guide, gear sector and bearings using one of these lubricants:... -
Page 5: Position Stops
Cylinder Operated G-Series Actuator Position Stops Valves equipped with cylinder operated G-Series actuators have stops to limit valve travel in both the clockwise and counterclockwise directions. See the STOP ADJUSTMENTS section of this instruction for details on adjusting the stops. -
Page 6: Removing Actuator
DeZURIK Cylinder Operated G-Series Actuator Removing Actuator 1. Discontinue flow, relieve pipeline pressure and close valve. Accidental operation of power actuator can cause personal injury or equipment damage. Disconnect and lock out power to actuator before servicing. 2. Place the valve in the closed position. -
Page 7: Installing Cylinder
DeZURIK Cylinder Operated G-Series Actuator Installing Cylinder 1. Scrape the old gasket material from the actuator housing and cylinder head, and then place a new gasket on the cylinder head. 2. Install the cylinder/rack rod assembly by sliding the rack rod through the rack; then fasten the cylinder to the housing. -
Page 8: Reassembling Actuator
DeZURIK Cylinder Operated G-Series Actuator Disassembling Actuator (Continued) 7. Mark the teeth of the rack and gear as shown in Figure 3 and lift the gear sector out of the actuator; be careful not to lose the actuator drive key. - Page 9 DeZURIK Cylinder Operated G-Series Actuator Reassembling Actuator (Continued) 1. Line up the scribe marks on the valve and adapter made during actuator removal; then set the adapter and housing on the valve. 2. Fasten the adapter to the valve. 3. Insert the rack bearing on the pin in the actuator housing (if replacing worn bearing).
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Page 10: Changing Mounting Positions
DeZURIK Cylinder Operated G-Series Actuator Changing Mounting Positions The actuator can be mounted in 90° increments around the valve stem. Discontinue flow and relieve pipeline pressure. Accidental operation of power actuator can cause personal injury or equipment damage. Disconnect and lock out power to actuator before servicing. -
Page 11: Troubleshooting
DeZURIK Cylinder Operated G-Series Actuator Troubleshooting Condition Possible Cause Corrective Action Cylinder pressure is low Increase cylinder pressure. Do not exceed 100 psi (69 kPa). Actuator will not fully operate Piston seal in cylinder is leaking Replace piston seal(s). See valve Cylinder instructions. - Page 12 If you use metric fasteners with ASME Class 150/300 bolt holes and flange bolt patterns, you do so at your sole risk and any liability associated with such use shall not be the responsibility of DeZURIK, Inc. In addition to the foregoing, DeZURIK’s Manufacturer’s Conditions apply.
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