DeZurik D11040 Quick Start Manual Download Page 5 | Manualshive

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DeZurik D11040 Quick Start Manual Download Page 5

DeZURIK

Cylinder Actuator for Knife Gate Valves

February 2022

Page 5

D11040

Cylinder Stroke Adjustment

The adjusting set screw (C21) in the cylinder acts as the cylinder stroke adjustment. Adjust this

adjusting screw (C21) so that the actuator does not pull the gate off the seat ring when the valve is fully
opened.

To adjust the closed position:

1.

Close the valve.

2.

Turn the clip into the piston rod (C14) until the cylinder has a minimum of 1/16” stroke remaining and
tighten jam nut.

3.

Open the valve and adjust the adjusting screw (C21) until the gate is clear of the flow port but fully on
the seat ring. Tighten Jam nut (C22).

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Summary of Contents for D11040

Page 1: ...DeZURIK Inc Sartell Minnesota USA Phone 320 259 2000 www dezurik com info dezurik com Cylinder Actuator for Knife Gate Valves Instruction D11040 February 2022 ...

Page 2: ... have been removed from service with the assumption of process material within the valve Inspection Your cylinder actuator has been packaged to provide protection during shipment Carefully inspect the unit for damage upon arrival and file a claim with the carrier if damage is apparent Parts Recommended spare parts are listed on the assembly drawing These parts should be stocked to minimize downtim...

Page 3: ... 3 Description 4 Lubrication 4 Adjustments 4 Aligning the Cylinder 4 Valve Support 4 Cylinder Stroke Adjustment 5 Drawing 6 Cartridge Rebuild 7 Disassembling the Cartridge 7 Reassembling the Cartridge 7 Cartridge Assembly Replacement 8 Disassembling the Cylinder 9 Reassembling the Cylinder 10 Troubleshooting 11 ...

Page 4: ...o 55 lubricant Adjustments Aligning the Cylinder To work properly the Piston Rod C14 and gate must be aligned The mounting holes in the cylinder and yoke are designed to allow for adjustment Visually check the alignment with the valve in the open and close positions and adjust as needed 1 Align the Piston Rod C14 and the gate with each other 2 Check the Piston Rod C14 and gate alignment in the val...

Page 5: ... screw C21 so that the actuator does not pull the gate off the seat ring when the valve is fully opened To adjust the closed position 1 Close the valve 2 Turn the clip into the piston rod C14 until the cylinder has a minimum of 1 16 stroke remaining and tighten jam nut 3 Open the valve and adjust the adjusting screw C21 until the gate is clear of the flow port but fully on the seat ring Tighten Ja...

Page 6: ...DeZURIK Cylinder Actuator for Knife Gate Valves February 2022 Page 6 D11040 Drawing Figure 2 Component Identification ...

Page 7: ...ge C15 is threaded free from the Cylinder Head C16 slide Cylinder Cartridge C15 all the way down the Piston Rod C14 and off 4 Remove the Wiper C15B Rod Seal C15C and O ring C15D from the Cylinder Cartridge C15A Reassembling the Cartridge 1 Clean the Cylinder Cartridge C15 grooves and lubricate with Dow Corning Number 44 lubricant or Dow Corning Number 55 in cylinders for 40 C to 50 C service 2 Ins...

Page 8: ...r repair 1 To replace the Cylinder Cartridge C15 assembly shut off the air supply 2 Remove the Cylinder Cartridge C15 by unscrewing it from the Cylinder Head C16 with a spanner wrench 3 Once Cylinder Cartridge C15 is threaded free from the Cylinder Head C16 slide Cylinder Cartridge C15 all the way down the Piston Rod C14 and off 4 Replace it with a new Cylinder Cartridge C15 Figure 3 Cartridge Ass...

Page 9: ... port 3 Remove the Nuts C5 and Washers C6 from the Tie Rods C4 4 Remove the Cylinder Cap C7 and remove the O ring C8 from the Cylinder Cap C7 5 Remove the Cylinder Tube C13 Piston Seal C11 and O ring C12 Clean the parts and the grooves in the Piston C10 See Figure 4 Note Rotating the Cylinder Tube C13 while pulling makes it easier to get it off the Piston C10 6 Remove the Piston Rod C14 assembly a...

Page 10: ...roove with Dow Corning Number 44 lubricant and place the O ring C12 and Seal C11 on the Piston C10 For cylinders for 40 C to 50 C 40 F to 58 F service applications a Piston Seal C11 is not used and Dow Corning No 55 lubricant should be applied 6 Carefully slide the Cylinder Tube C13 over the Piston C10 The Piston Seal C11 must be well lubricated Start the Cylinder Tube C13 at a 45 angle and rotate...

Page 11: ...r piston and disconnect air fluid line at opposite port If no leakage find cause of cylinder drift in other component parts in the circuit Cylinder Fails to Move the Load Pressure is too low Check pressure at cylinder make sure it is to circuit requirements Piston seal leakage Cycle cylinder by operating the valve watch air fluid flow at valve exhaust ports at end of cylinder stroke Replace piston...

Page 12: ...ll be the only effective guarantee or warranty binding on Seller despite anything to the contrary contained in the purchase order or represented by any agent or employee of Seller in writing or otherwise notwithstanding including but not limited to implied warranties THE FOREGOING REPAIR AND REPLACEMENT LIMITED WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES OBLIGATIONS AND LIABILITIES INCLUDING ALL W...

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