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Baker Hughes

Conversion Table

USCS Unit

Conversion Factor

Metric Unit

in.

25.4

lb.

0.4535924

6.4516

/min

0.02831685

/min

gal/min

3.785412

L/min

lb/hr

0.4535924

kg/hr

psig

0.06894757

barg

ft lb

1.3558181

°F

5/9 (°F-32)

°C

Note:

Multiply USCS value with Conversion Factor to get Metric value.

All the United States Customary System (USCS)

values in the Manual are converted to Metric values using

the following conversion factors:

NOTICE

For valve configurations not listed in this

manual, please contact your local

Green

Tag

™ Center (GTC) for assistance.

Содержание Consolidated 2478 Series

Страница 1: ...Consolidated 2478 Series Pressure Relief Valves Instruction Manual Rev C Baker Hughes Data Classification Public ...

Страница 3: ...AND THE PARTICULAR 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 OP...

Страница 4: ... L min lb hr 0 4535924 kg hr psig 0 06894757 barg ft lb 1 3558181 Nm F 5 9 F 32 C Note Multiply USCS value with Conversion Factor to get Metric value All the United States Customary System USCS values in the Manual are converted to Metric values using the following conversion factors NOTICE For valve configurations not listed in this manual please contact your local Green Tag Center GTC for assist...

Страница 5: ... Consolidated 2478 Series Relief Valve 10 X Operating Principle 11 XI Disassembly of 2478 Series Relief Valve 11 XII Inspection and Part Replacement 12 XIII Reassembly of 2478 Series Relief Valve 13 XIV Setting and Testing 14 XV Trouble Shooting 14 XVI Replacement Parts Planning 15 A Basic Guidelines 15 B Identification and Ordering Essentials 15 XVII Genuine Consolidated Parts 15 XVIII Recommende...

Страница 6: ...n how to avoid the hazard The top panel of the format contains a signal word DANGER WARNING CAUTION or ATTENTION which communicates the level of hazard seriousness The center panel contains a pictorial which communicates the nature of the hazard and the possible consequence of human or product interaction with the hazard In some instances of human hazards the pictorial may instead depict what prev...

Страница 7: ... valve during disassembly stand clear and or wear protective clothing to prevent exposure to splatter or any corrosive process medium which may have been trapped inside the valve Ensure the valve is isolated from system pressure before the valve is removed Exercise care when examining a safety valve for leakage Prior to each actuation assure that no personnel are near the valve Steam escaping from...

Страница 8: ...cal Green Tag Center GTC if there are any questions relative to tools methods The installation and start up of valves and or valve products may involve proximity to fluids at extremely high pressure and or temperature Consequently every precaution should be taken to prevent injury to personnel during the performance of any procedure These precautions should consist of but are not limited to ear dr...

Страница 9: ...ing a safety valve by the application of external force to lessen the spring loading which holds the valve closed Seat Bushing A seat bushing is the pressure containing element which constitutes the inlet flow passage and includes the fixed portion of the seat closure Outlet Size Outlet size is the nominal pipe size of the outlet passage of a safety valve unless otherwise designated V Valve Termin...

Страница 10: ... attains its rated relieving capacity Safety Valve A safety valve is a pressure relief valve actuated by inlet static pressure and characterized by rapid opening or pop action Set Pressure Set pressure is the value of increasing inlet static pressure at which a safety valve displays the operational characteristics as defined under Popping Pressure It is one value of pressure stamped on the safety ...

Страница 11: ...ould never be subjected to sharp impact This would be most likely to occur by bumping or dropping during loading or unloading from a truck or while moving with a power conveyor such as a fork lift truck 3 Meticulous care should be exercised to prevent dirt and other foreign materials from entering the inlet and outlet ports during storage as well as in installation The 2478 Series relief valve is ...

Страница 12: ...gure 1 2478 Standard Soft Seat Design Figure 2 Packed Cap Assembly Ref No Nomenclature 1 Base 2 Bonnet 3 Disc 4 Seat Washer 5 Soft Seat Retainer Ring 6 Spindle 7 Spring Washer 8 Spring 9 Compression Screw 10 Compression Screw Locknut 11 Screwed Cap 12 Lever 13 Packed Cap 14 Cam Shaft 15 Bushing 16 Drive Screw 17 O Ring 18 Release Nut 19 Release Locknut 20 O Ring Gasket ...

Страница 13: ...e valve closes once system pressure reaches closing pressure of the valve X Operating Principle 1 Remove Screwed Cap or Packed Cap Lever assembly 2 Remove Release Nut and Release Locknuts in valves with cap lever assembly 3 Release Compression Screw Locknut and release spring compression by turning Compression Screw counter clockwise 4 With valve Base held in vise loosen Bonnet to Base connection ...

Страница 14: ... rounding of the seat e When lapping the Base keep a firm grip on the lap or part to prevent the possibility of dropping it and damaging the seat f Lap using a reciprocating motion in all directions at the same time applying uniform pressure and rotating the lap or the part slowly If reconditioning necessitates removing more than 010 0 03 mm replace the base g Replace the compound frequently after...

Страница 15: ...ring to ensure its proper positioning Subsequently press the ring hard enough to move it down to provide tight retaining of the soft seat A properly assembled soft seat will be somewhat compressed by the retaining ring 3 Place spindle into disc pocket 4 Insert disc spindle spring and spring washer assembly into bonnet 5 Holding bonnet upside down so that disc will not drop install the base to the ...

Страница 16: ...disc guiding area in the bonnet should be examined Set pressure variation may be caused by spring relaxation damage to the seats from foreign matter from chatter or difference in thermal conditions between various test runs The drop off in opening pressure due to spring relaxation may be caused by excessive valve lift in the event of excessive discharge beyond rated flow The compression screw can ...

Страница 17: ...lobal Green Tag Center GTC or Authorized Consolidated Sales Representatives network XVII Genuine Consolidated Parts A Basic Guidelines The basic objectives in formulating a replacement parts plan are PROMPT AVAILABILITY MINIMUM DOWNTIME SENSIBLE COST SOURCE CONTROL Consult the Recommended Spare Parts list see Section XVIII of this manual to define the parts to be included in the inventory plan Sel...

Страница 18: ...ring assembly tools When ordering replacement or spare parts state type size and set pressure of the valve and fluid type Refer to Consolidated 2478 Series Relief Valve catalog for more detailed information on parts descriptions and nomenclatures Table 4 Component Retainer Ring Valve Type 2091155 2091156 2091157 2091158 2091160 2091162 2478D X 2478E X 2478F X 2478G X 2478H X 2478J X Table 5 Compon...

Страница 19: ...ughes Consolidated factory maintains a Repair Center The repair department in conjunction with the manufacturing facilities is equipped to perform specialized repairs and product modifications e g bushing replacements hydroset calibrations electromatic relief valve repairs etc C Relief Valve Maintenance Training Rising costs of maintenance and repair in the Utility and Process Industries indicate ...

Страница 20: ...rent information The Baker Hughes logo Consolidated and Green Tag 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 BHCN 2478 IOM 32529C 0520 05 2020 Direct Sales Office Locations Find the nearest local Channel Partner in your area valves bakerhughes com contact us valves bakerhu...

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