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Summary of Contents for Flowserve Edward 602Y
- Page 1 Edward Valves Maintenance Manual for Edward Pressure-Seal Valves V-377 R4...
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Page 2: Table Of Contents
Flow Control Division Edward Valves Table of Contents Key to Illustrations ...........3 Procedures for Removing Limitorque Type III Pressure-Seal Bonnets Operators from Valve Yokes Pressure-Seal Valve Figure Numbers ....3 – Stop and Stop-Check (Non-Return) Valves ......36 Revolving Stem Valves or Non-Revolving Introduction ............3 Stem Valves with Torque-Only Units...22 –... -
Page 3: Key To Illustrations
Flow Control Division Edward Valves Table of Contents (continued) Introduction Key to Illustrations This manual has been prepared to Illus No. Title Page Illus No. Title Page serve as a guide for the maintenance Pressure-Seal Bonnet Type I......4 Torque-only Limitorque Operator on of Edward valves of the pressure-seal Revolving Stem Valve (SMB-4T or 5T)..22 Pressure-Seal Bonnet Type II .....5... -
Page 4: Type I
Flow Control Division Edward Valves Description of Pressure-Seal Bonnet Types – Type I The procedure to be followed in making Type I is the studded bonnet design as Type I the repair is then explained. This includes shown. It uses the basic pull-up construction normal valve maintenance as well as major with studs in the bonnet projecting through valve repair. -
Page 5: Type Ii
Flow Control Division Edward Valves Description of Pressure-Seal Bonnet Types – Type II Type II Type II is the push-up design in which the bonnet retainer ring is screwed onto the Fig. No. Pressure Rating Type of Valve Size bonnet, and cap screws develop the 2002Y 1500-SPL Flite-Flow Globe Stop-Check (Y-Type) -
Page 6: Type Iii
Flow Control Division Edward Valves Description of Pressure-Seal Bonnet Types – Type III Type III also uses the three-piece pressure- Type III seal construction but combines it with the Fig. No. Pressure Rating Type of Valve Size basic pull-up bonnet. This design is utilized 602Y Flite-Flow Stop-Check (Y-Type) 24-32... -
Page 7: Type Iv
Flow Control Division Edward Valves Description of Pressure-Seal Bonnet Types – Type III and Type IV Type III Type IV design used in the 4500 lb. valve (continued) is unique in that the gasket retainer seg- Fig. No. Pressure Rating Type of Valve Size ments are located below the bonnet. -
Page 8: Service Problems
Flow Control Division Edward Valves Service Problems Packing Chamber Leak Packing Recommendations 3. Position split packing rings with the ends of adjacent rings rotated 90°. Where moisture appears or actual dripping Edward valves are packed with all-purpose occurs at the packing chamber around the packing sets.This is a combination of pack- 4. - Page 9 Flow Control Division Edward Valves Service Problems (continued) Table A Table A (continued) Gland Bolt Torques, ft.-lbs. Gland Bolt Torques, ft.-lbs. Class 600 Valves Class 900 Valves Initial Final Initial Final Figure Numbers Size Torque Torque Figure Numbers Size Torque Torque 604, 605, 606, 607 4002, 4014, 4302, 4314...
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Page 10: Pressure-Seal Gasket Leaks
Flow Control Division Edward Valves Service Problems (continued) Pressure-Seal Gasket Leak the nuts (or capscrews) of the pull-up bolt- imperfections in the body wall in the ing, and the tightening torque requirements form of pin holes, extended cracks, or Edward valves have been produced with for the pull-up bolting are different. - Page 11 Flow Control Division Edward Valves Service Problems (continued) Leakage of steam through a valve that is badly steam-cut has a whistling or HANDWHEEL– IMPACTOR TYPE sonorous sound. If the valve is only slightly BEARINGS–USED ON NON- steam-cut, however, leakage is identified REVOLVING STEM VALVES ONLY;...
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Page 12: Body Wall Leaks
Flow Control Division Edward Valves Service Problems (continued) Body Wall Leak Screwing the stem down slowly to contact On valves where the stem bushing and the disk first increases the intensity of vibra- bearings are in the motor operator, the This is a visual leak through the body wall, tion to the hand and to the ear, but further bearings are lubricated by the operator... -
Page 13: Repair Procedures
Flow Control Division Edward Valves Repair Procedures VALVE BODY REPAIRS means of insurance against getting area up to 1/16” above the original chips, weld spatter or other foreign surface, as checked with a straight Body Bore Gasket Seal Area Repair matter into the pipe line if the valve is edge along the body bore. -
Page 14: Seat And Disk Repair
Flow Control Division Edward Valves Repair Procedures (continued) 2. Heat the body area adjacent to the A shim should pass around the disk Where an indentation or pit marks on guide rib to approximately 200°F. at all three guide ribs with equal the valve seat joint are deep (.010 or This can be done locally with an oxy- clearance. -
Page 15: Body Wall Repair
Flow Control Division Edward Valves Repair Procedures (continued) For smaller size valves, a driving han- has been cleaned away, the disk nut will 3. Welding should be done by qualified dle can be easily made of 3/8” diame- readily unscrew. Repair any damaged sur- welders, using qualified procedures and ter wire bent as per Fig. -
Page 16: Bonnet Or Cover Repair
Flow Control Division Edward Valves Repair Procedures (continued) line scale or other foreign matter that has skin cut on the sealing surface. In so 47°, plus 1/2°, minus 0°. When finished, inadvertently gotten into the line. Upon dis- doing, it is mandatory that the work be this surface must be smooth and free from assembly, any body and disk-piston assem- chucked concentric and square to all exist-... -
Page 17: Field Repair Equipment
Flow Control Division Edward Valves Field Repair Equipment Available from the Edward Manufacturing C, D on this page. This fixture can be plant in Raleigh, N.C., are some basic used when the valve is installed in tools for repairing valves in the field. This any position, and is suggested in equipment was developed for customer use place of (1) above, when the stem is... -
Page 18: Disassembly Procedures For Pressure-Seal Valves
Flow Control Division Edward Valves Disassembly Procedures for Pressure-Seal Valves Introduction Area 1 If failure is indicated in Area 2, it will be The impactor Handwheel or Handle, or the Limitorque necessary to first remove the valve opera- Step-by-step disassembly procedures are tor. - Page 19 Flow Control Division Edward Valves Disassembly Procedures for Pressure-Seal Valves (continued) For Method 1, first remove the operator- Disassembly Procedures Valves equipped with Impactogear air yoke assembly combination as described wrench operators do not require disassem- for Impactogear Handles in “Procedure for Removing Valve Opera- bly of the Impactogear itself.
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Page 20: Disassembly Procedures For Impactor Handles And Handwheels
Flow Control Division Edward Valves Disassembly Procedures for Impactor Handles & Handwheels Non-Ball Bearing Type Impactor 3. Lift the handwheel off the valve, using a suitable capacity chain hoist for Handles and Handwheels large handwheels. If the stem of the ROLL PIN HANDWHEEL LOCKNUT All have 12, 14, 16, 20, 26, or 30 inch... -
Page 21: Ball Bearing Impactor Handwheels
Flow Control Division Edward Valves Disassembly Procedures for Impactor Handles & Handwheels (continued) Ball Bearing Impactor Handwheels 4. Provide a suitable capacity chain c. Begin with all slack out of the hoist, at least 1500 lb., to remove hoist, and retain a taut chain by (With or without Impactogears) the handwheel. -
Page 22: Procedures For Removing Limitorque Operators From Valve Yokes
Flow Control Division Edward Valves Procedures for Removing Limitorque Operators from Valve Yokes Edward pressure-seal valves use various On torque-only Limitorques, the operator Revolving Stem Valves or Non- types of Limitorque operators, depending can be removed while the valve is pressur- Revolving Stem Valves with Torque- upon the size and pressure class, which ized, but caution must be observed to... -
Page 23: Non-Revolving Stem Valves With Torque And Thrust Units
Flow Control Division Edward Valves Procedures for Removing Limitorque Operators from Valve Yokes (continued) 4. Lift the operator up and completely vertical, the hoist should be posi- off the stem and stem key or the yoke tioned slightly away from the hand- bushing splines. -
Page 24: Procedures For Setting Actuator Torque And Limit Switches
Flow Control Division Edward Valves Procedures for Setting Actuator Torque and Limit Switches Limitorque Limit Switch and Torque 1. Make certain the electric current is 4. With the valve in this position, off. declutch the drive pinion (A) by Switch Setting Procedures inserting a screwdriver in the drive 2. -
Page 25: Torque Switch
Flow Control Division Edward Valves Procedures for Setting Actuator Torque and Limit Switches (continued) 7. Connect the electric current and contact using the same procedure 5. For heavier seating move the adjust- check this setting as follows: outlined under steps 4, 5a, 5b, and ing screw (G) out and re-tighten the 6, but use the intermittent gear shaft jam nut. -
Page 26: Torque Switch Setting
Flow Control Division Edward Valves Procedures for Setting Actuator Torque and Limit Switches (continued) 3. Move the socket head adjusting Torque Switch Setting screw (H) in for light seating. The procedure outlined for setting torque 4. Close the valve by the motor and test switches is to be used only on occasions for tightness of closing. -
Page 27: Disassembly Procedures For Yoke Assemblies
Flow Control Division Edward Valves Disassembly Procedure for Yoke Assemblies AREA 2 This procedure describes the method for: 1) Removing the yoke assembly from the valve, after the operator has been removed (procedure described elsewhere), and YOKE SPACER 2) Disassembling the yoke assembly itself. This procedure should be used if service is BONNET required in the yoke assembly itself (Area... -
Page 28: Revolving Stem Valves With Type Ii Bonnets
Flow Control Division Edward Valves Disassembly Procedure for Yoke Assemblies (continued) Revolving Stem Valves – Valves with 5. Remove the yoke lock ring using a d. Remove the bearing washers (if small pry bar to separate the halves. any) and the bearings from the Type II Bonnets yoke or yoke bushing, being very 6. -
Page 29: Procedures For Removing Operator And Yoke Assembly As A Unit
Flow Control Division Edward Valves Procedures for Removing Operator and Yoke Assembly as a Unit Impactor handwheels used on Type II bon- On Limitorque-operated valves, due to the AREA 1 & 2 nets with revolving stems are not attached construction, it is not possible to remove to the yoke (only the stem) and the two, the operator and yoke assembly as a unit. -
Page 30: Non-Revolving Stem Valves With Type Ii, Iii Or Iv Bonnets
Flow Control Division Edward Valves Procedures for Removing Operator and Yoke Assembly as a Unit (continued) Non-Revolving Stem Valves with 8. Turn the Impactor handwheel or 9. With the hoist, lift the whole assem- Limitorque handwheel in a direction bly clear of the stem simultaneously Type II, III, or IV Bonnets to close the valve, thus unscrewing slipping the stem guide collar off of... -
Page 31: Disassembly Procedures For Bonnet Types
Flow Control Division Edward Valves Disassembly Procedures for Bonnet Types stem assembly is held only by the fric- 2. Remove the crossarm by tapping with AREA 3 tion of the pressure-seal gasket a hammer on the underside. against the body bore. Trapped pres- 3. -
Page 32: Piston-Lift Check Valves
Flow Control Division Edward Valves Disassembly Procedures for Bonnet Types (continued) 6. Partially back off the remaining bon- assembly is attached to the stem. On with considerable force. Therefore, care net stud nuts. Raise the yoke, and stop-check (non-return) valves, the must be taken to relieve all pressure, and insert uniform shims in at least three piston-disk assembly is not attached... -
Page 33: Type Ii Pressure-Seal Bonnets - Stop And Stop-Check (Non-Return) Valves With Revolving Stems
Flow Control Division Edward Valves Disassembly Procedures for Bonnet Types (continued) In larger sizes where this assembly is 4. Remove the gland stud nuts and 14. Lift the bonnet into contact with the too heavy to manhandle, remove the gland. pressure-seal gasket, again using the cover/cover retainer and install an chain hoist. -
Page 34: Stop And Stop-Check (Non-Return) Valves With Non-Revolving Stems
Flow Control Division Edward Valves Disassembly Procedures for Bonnet Types (continued) 19. Screw 1/2”-13 bolts (3/8”-16 on is convenient, being careful not to 8. Mark the bonnet, bonnet retainer sizes 5” and smaller) into the thread- damage the slot. ring, and body with adjacent prick ed bosses or nuts provided in the pis- punch marks so that their relative *6. - Page 35 Flow Control Division Edward Valves Disassembly Procedures for Bonnet Types (continued) 11. With a chain hoist mounted in line at a time using a star pattern. It is corresponding to the previous mark with the stem and fastened to the eye- possible to damage the valve parts on the body (see step 8).
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Page 36: Type Iii Pressure-Seal Bonnets - Stop And Stop-Check (Non-Return) Valves
Flow Control Division Edward Valves Disassembly Procedures for Bonnet Types (continued) 22. On stop valves, the disk and disk-nut *5. Turn the crossarm in a direction to it does. When the bonnet is free, assembly is attached to the stem. On close the valve, thus unscrewing the lower it as far as it will go into the stop-check (non-return) valves, the pis-... -
Page 37: Piston-Lift Check Valves
Flow Control Division Edward Valves Disassembly Procedures for Bonnet Types (continued) 21. On stop valves, the disk and disk-nut punch marks so that their relative posi- ble to damage valve parts by cock- assembly is attached to the stem. On tion can be restored on reassembly. -
Page 38: Tilting Disk Check Valves
Flow Control Division Edward Valves Disassembly Procedures for Bonnet Types (continued) Type III Pressure-Seal Bonnets – cover will drop easily when this pres- 12. Replace the cover retainer, using sure is relieved. Lower the cover until shims to provide additional clearance Tilting Disk Check Valves it rests on top of the disk. -
Page 39: Type Iv Pressure-Seal Bonnets - Stop And Stop-Check (Non-Return) Valves
Flow Control Division Edward Valves Disassembly Procedures for Bonnet Types (continued) 14. Lift out the cover assembly. During this through the center hole of the Type IV Pressure-Seal Bonnets – process, mark the spacer ring and hinge pin retainer and thread into Stop and Stop-Check (Non-Return) pressure-seal gasket at points (other the puller hole in the hinge pin. - Page 40 Flow Control Division Edward Valves Disassembly Procedures for Bonnet Types (continued) 3. Remove the bonnet retainer ring cap 11. The hoist may have to be used for b. Slide the bonnet, spacer ring (if screws. Due to space limitations, a step 10, if the stem is not vertical, to used) and pressure-seal gasket up special tool may have to be used.
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Page 41: Piston-Lift Check Valves
Flow Control Division Edward Valves Disassembly Procedures for Bonnet Types (continued) bore and lift out the piston, being 4. Mark the body and cover retainer at 10. Remove the gasket retainer segments careful not to mar any sealing sur- corresponding points for reference using two pieces of approximately faces such as the body pressure-seal and reassembly. -
Page 42: Assembly Of Composite Pressure-Seal Gaskets
Flow Control Division Edward Valves Assembly of Composite Pressure-Seal Gaskets It is important to determine that the new exceed the O.D. of the bonnet. This IMPORTANT: The composite pressure-seal composite pressure-seal gasket, the bonnet will ensure that the gasket does not must remain dry until fully compacted and the body sealing area are in satisfac- catch on the body and “energize”... -
Page 43: Reassembly Procedures For Metal Pressure-Seal Valves
Flow Control Division Edward Valves Assembly of Composite Pressure-Seal Gaskets (continued) 8. Initially compress the pressure-seal 11. Re-torque the bolts at the final CAUTION gasket, making sure that the bonnet torque value several times, until the does not cock in the body. gasket no longer compresses. -
Page 44: Type I Pressure-Seal Bonnets - Stop And Stop-Check (Non-Return) Valves
Flow Control Division Edward Valves Reassembly Procedures for Metal Pressure-Seal Valves (continued) wrench on the O.D. Use a reason- do not have bearings (they are in the 8. When reassembling handwheels with able length of bar stock, or ade- operator instead). For an explanation Impactogears, make certain that the quate size strap wrench, so the nut of the various operator types, refer to... -
Page 45: Piston-Lift Check Valves
Flow Control Division Edward Valves Reassembly Procedures for Metal Pressure-Seal Valves (continued) 6. Open valve to the backseat with the Type II Pressure-Seal Bonnets – Stop 9. Retrace disassembly steps 5, 4, 3, bonnet studs loose. Use the hand- and 1 on page 33. and Stop-Check (Non-Return) Valves wheel to back-seat the valve 2 or 3 with Revolving Stems... -
Page 46: Type Iii Pressure-Seal Bonnets - Stop And Stop-Check (Non-Return) Valves
Flow Control Division Edward Valves Reassembly Procedures for Metal Pressure-Seal Valves (continued) 8. Retighten the bonnet retainer cap 6. Tighten the bonnet retainer nuts in Type III Pressure-Seal Bonnets – screws in accordance with the torque accordance with the torque values Tilting Disk Check Valves values shown on page 10. -
Page 47: Tilting Disk Check Valves
Flow Control Division Edward Valves Reassembly Procedures for Metal Pressure-Seal Valves (continued) 8. Insert the gasket retainer segments in Type IV Pressure-Seal Bonnets – Type IV Pressure-Seal Bonnets – the body groove. Stop and Stop-Check Piston-Lift Check Valves (Non-Return) Valves 9. -
Page 48: General Information
Flow Control Division Edward Valves General Information WARNING Edward Stop-Check valves and Check clean of old grease and accumulated dirt. valves. The limitations given for line inclina- Fresh lubricant should then be applied. This Edward valves are not provided with a tion and bonnet roll angle should not be is most effectively done with the valve in the pressure relief device. - Page 49 Flow Control Division Edward Valves General Information Seat and Disk Joint Leaks and seat, particularly by particles of line valve body while holding the other end scale or rust in suspension or normal solids between the teeth, with hands over the ears. A leak existing between the seat and disk in solution.
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Page 50: Supplementary Repair Information
Flow Control Division Edward Valves Supplementary Repair Information In analyzing valve trouble in the field, it is Ordering Parts important to consider the following factors: All requests for replacement parts for cast steel valves should be forwarded to the 1. Size of the valve. Edward business unit in Raleigh, North 2. - Page 51 Flowserve Corporation has established industry leadership in the design and manufacture of its products. When properly selected, this Flowserve product is designed to perform its intended function safely during its useful life. How- ever, the purchaser or user of Flowserve products should be aware that Flowserve products might be used in numerous applications under a wide variety of industrial service conditions. Although Flowserve can (and often does) pro- vide general guidelines, it cannot provide specific data and warnings for all possible applications.
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