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Summary of Contents for DeZurik PEF
- Page 1 DeZURIK 3–36" PEF 100% PORT ECCENTRIC PLUG VALVES D10453 Instruction April 2015...
- Page 2 3-36" PEF 100% Port Eccentric Plug Valves* Instructions These instructions provide information about PEF 100% Port Eccentric Plug Valves. They are for use by personnel who are responsible for installation, operation and maintenance of PEF 100% Port Eccentric Plug Valves.
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Page 3: Table Of Contents
DeZURIK 3-- - 36" PEF 100% Port Eccentric Plug Valves Table of Contents Description - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -... -
Page 4: Description
90 degrees from full open to full closed. Clockwise rotation of the valve stem closes the valve. If an actuator other than a DeZURIK is to be mounted, the actuator must be capable of seating and unseating the plug and maintaining the valve plug position with flow in the pipeline. -
Page 5: Installation
DeZURIK 3-- - 36" PEF 100% Port Eccentric Plug Valves Installation The type of materials carried in the pipeline and the location of the valve determine the correct installation procedure. Liquids without Suspended Solids and Clean Gases 1. Before installation, remove foreign material such as weld spatter, oil, grease, and dirt from the pipeline. - Page 6 DeZURIK 3-- - 36" PEF 100% Port Eccentric Plug Valves Installation (Continued) Figure 1—Liquids without Suspended Solids and Clean Gases D10453 Page 6 April 2015...
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Page 7: Liquids With Suspended Solids And Dirty Gases
DeZURIK 3-- - 36" PEF 100% Port Eccentric Plug Valves Installation (Continued) Liquids with Suspended Solids and Dirty Gases If the pipeline carries suspended solids such as paper stock of 2 percent or higher consistency, mining slurry, or raw sewage: 1. - Page 8 DeZURIK 3-- - 36" PEF 100% Port Eccentric Plug Valves Installation (Continued) Figure 2—Liquids with Suspended Solids and Dirty Gases D10453 Page 8 April 2015...
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Page 9: Actuator Stop Adjustments
DeZURIK 3-- - 36" PEF 100% Port Eccentric Plug Valves Actuator Stop Adjustments Closed Position Because of the eccentric action of this valve, the closed position of the valve is dependent upon the pressure drop expected when the valve is closed. To adjust the valve closed position, follow these steps: This valve is a pressure vessel. -
Page 10: Plug Journals
DeZURIK 3-- - 36" PEF 100% Port Eccentric Plug Valves Lubrication (Continued) Plug Journals Plug journal lubrication is dependent upon the materials used in construction of the valve. • : Lubricate the journals on the plug using one of these lubricants. -
Page 11: Parts Identification
DeZURIK 3-- - 36" PEF 100% Port Eccentric Plug Valves Figure 3—Parts Identification April 2015 Page 11 D10453... -
Page 12: Packing Replacement
DeZURIK 3-- - 36" PEF 100% Port Eccentric Plug Valves Packing Replacement Replacing Packing with Actuator Removed To replace the packing without removing actuator, see the “Replacing Packing Without Removing Actuator” section. See Figure 3 for parts identification. 1. Discontinue pipeline flow and relieve pipeline pressure. - Page 13 DeZURIK 3-- - 36" PEF 100% Port Eccentric Plug Valves Packing Replacement (Continued) Note: 3 - 8” lever and nut operated valves have a friction cone (A21) and standard packing (A9). Before installing the gland (A11), set the friction cone on top of the packing. Do not lubricate the outside of the friction cone or the inside of the gland.
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Page 14: Replace Packing Without Removing Actuator
DeZURIK 3-- - 36" PEF 100% Port Eccentric Plug Valves Packing Replacement (Continued) Replacing Packing Without Removing Actuator Note: Lever and nut operated valves require that the actuator be removed before packing can be replaced. See “Replacing Packing with Actuator Removed” section to replace the packing in these valves. -
Page 15: Disassembly
DeZURIK 3-- - 36" PEF 100% Port Eccentric Plug Valves Disassembly See Figure 3 for parts identification. This valve is a pressure vessel. The bonnet will blow off the valve if the bonnet bolts are removed with pressure in the valve and pipeline media can be hazardous. - Page 16 DeZURIK 3-- - 36" PEF 100% Port Eccentric Plug Valves Disassembly (Continued) 11. Reaching through the packing chamber in the bonnet (A6), drive the bearing (A7) out of the bonnet using a hammer and pin punch. 12. Remove the bearing (A2) from the body (A1).
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Page 17: Reassembly
DeZURIK 3-- - 36" PEF 100% Port Eccentric Plug Valves Reassembly See Figure 3 for parts identification. 1. Push a new bearing (A2) into the body (A1), then lubricate the bearing as described in the "Lubrication" section. 2. For 24” - 36” valves, place a new o-ring (A16) in the groove of the journal cover (A17). Fasten the journal cover to the body (A1) with screws (A18). -
Page 18: Removing Valve From Pipeline
DeZURIK 3-- - 36" PEF 100% Port Eccentric Plug Valves Reassembly (Continued) 12. Install the actuator—see Actuator Instructions. 13. After actuator is mounted, and shaft key is assembled in keyseat, secure shaft key by staking with a center-punch on the end of the shaft. Stake on both sides of the shaft as shown in Figure 7. -
Page 19: Field Test
DeZURIK 3-- - 36" PEF 100% Port Eccentric Plug Valves Field Test Stroke the valve between the fully open and fully closed positions to verify that the valve and actuator are functioning properly. Prior to any field pressure test above the valve design pressure, contact DeZURIK. - Page 20 No claim for transportation, labor or special or consequential damages or any other loss, cost or damage shall be allowed. You shall be solely responsible for determining suitability for use and in no event shall DeZURIK, Inc. be liable in this respect.
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