Baker Hughes Masoneilan 525 Seris Instruction Manual Download Page 12

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9 | Baker Hughes

525 Reducing Service

526 Back Pressure

Parts Reference

Ref. Part Name

Body

Bonnet

Lantern Gland (Optional)

● 2

Upper Seat Ring

Drive Nut

18 Plug Stem Locknut

● 3

Lower Seat Ring

Packing Follower

Body Stud

● 4

Plug

13 Packing Flange

Body Nut

● 5

Plug Stem

14 Packing Stud

● 22 Gasket

● 8

Plug Pin

Packing Nut

Guide Bushing

Blind Head

● 16

Packing

● Recommended Spare Part

Summary of Contents for Masoneilan 525 Seris

Page 1: ...Masoneilan 525 526 Series Reducing and Back Pressure Regulators Instruction Manual Rev C Baker Hughes Data Classification Public ...

Page 2: ...ICULAR REQUIREMENTS FOR OPERATION OF OTHER EQUIPMENT AT THE SITE THESE INSTRUCTIONS DO NOT PURPORT TO COVER ALL DETAILS OR VARIATIONS IN EQUIPMENT NOR TO PROVIDE FOR EVERY POSSIBLE CONTINGENCY TO BE MET IN CONNECTION WITH INSTALLATION OPERATION OR MAINTENANCE SHOULD FURTHER INFORMATION BE DESIRED OR SHOULD PARTICULAR PROBLEMS ARISE WHICH ARE NOT COVERED SUFFICIENTLY FOR THE CUSTOMER OPERATOR S PUR...

Page 3: ...dy Disassembly 3 6 1 525 Reducing Service 3 6 2 526 Back Pressure Service 3 7 Maintenance Repair 4 7 1 Failure to shut off 4 7 2 Bushing Removal 4 7 3 Lapping Seats 4 7 3 1 525 Reducing Service 4 7 3 2 526 Back Pressure Service 5 7 4 Pinning 5 7 5 Packing Box 5 7 5 1 Carbon PTFE Rings Standard 6 8 Valve Body Reassembly 6 8 1 525 Reducing Service 6 8 2 526 Back Pressure Service 7 9 Actuators 7 9 1 ...

Page 4: ...copied without Baker Hughes s written permission Please report any errors or questions about the information in this manual to your local supplier These instructions are written specifically for the Regulator models 525 and 526 and do not apply for other equipment outside of this product line Useful Life Period The current estimated useful life period for the Regulator models 525 and 526 is25 year...

Page 5: ...essories have their own instruction manuals that provide information and details on the assembly and installation Refer to the appropriate instruction manual for each unique accessory 2 General These installation and maintenance instructions apply to all sizes and ratings of the Masoneilan 525 526 model regulators regardless of the type of trim used 525 526 model double seat regulators are designe...

Page 6: ...lve and vent the process pressure 6 1 525 Reducing Service After removing the actuator disassemble the body using the following procedure A If there is a leak detector connection on the lateral NPT port of the bonnet disconnect this piping as well B Remove body stud nuts 21 C Remove bonnet 10 and plug stem 5 and plug 4 sub assembly together as one unit Note Spiral wound body gaskets 22 are standar...

Page 7: ... the plug and stem sub assembly must be concentric See pinning operation section 8 4 7 3 1 525 Reducing Service 1 CIean body gasket surface areas 2 When seats have been removed insure that the sealing surfaces in the body bridge and the threads are thoroughly cleaned Note A sealant compatible with the process should be applied sparingly to the seat ring threads and sealing shoulder 3 lnstall and t...

Page 8: ...meter proceed as follows Note While pinning is being performed care must be taken not to damage the seating surface and plug guides A Using a drift punch drive out the old pin 8 Note If it is necessary to drill out the pin a drill somewhat smaller than the pin should be used and the remainder of the pin driven out B Unscrew the plug from the stem counter clock wise C Measure threaded portion of th...

Page 9: ...h proper bolt torque Refer to Table 1 for proper bolt torque and tightening sequence specifica tions F Carefully install plug and stem assembly carefully inserting lower guide into lower bushing Note Valve should be lapped before final assembly See Section 8 3 G Install body gasket 22 Note Spiral wound body gaskets 22 are standard in the 500 Series design It is imperative that a new gasket be inst...

Page 10: ... optional lubricator connection Refer to Section 8 5 for proper packing assembly procedure for standard or optional designs J Install packing follower 12 and packing flange 13 K lnstall packing flange stud nuts 15 Do not over tighten See Section 8 5 Packing Box L If a leak detection connection was installed connect it on the lateral NPT port in the bonnet If not insure that the 1 4 NPT plug remain...

Page 11: ...34 55 75 5 7 600 8 13NC 2A 25 34 55 75 5 7 3 80 150 300 8 5 8ʺ 11NC 2A 45 61 89 120 10 14 600 8 5 8ʺ 11NC 2A 45 61 89 120 10 14 4 100 150 300 8 ʺ 10NC 2A 80 108 170 230 20 27 600 8 ʺ 10NC 2A 80 108 170 230 20 27 Notes 1 Do not exceed Maximum Torque values listed 2 Tighten in increments until required torque levels are reached 3 Reject assembly if metal to metal contact is not achieved after reachi...

Page 12: ...e Ref Part Name Ref Part Name 1 Body 10 Bonnet 17 Lantern Gland Optional 2 Upper Seat Ring 11 Drive Nut 18 Plug Stem Locknut 3 Lower Seat Ring 12 Packing Follower 19 Body Stud 4 Plug 13 Packing Flange 21 Body Nut 5 Plug Stem 14 Packing Stud 22 Gasket 8 Plug Pin 15 Packing Nut 23 Guide Bushing 9 Blind Head 16 Packing Recommended Spare Part ...

Page 16: ...rent information The Baker Hughes logo and Masoneilan are trademarks of Baker Hughes Company Other company names and product names used in this document are the registered trademarks or trademarks of their respective owners BHMN 525 526 IOM 31664C 0320 03 2020 Direct Sales Office Locations Find the nearest local Channel Partner in your area valves bakerhughes com contact us valves bakerhughes com ...

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