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Table 11:

 

SetPressureMultipliersforColdDifferentialTestPressureatAmbientTemperature

Operating Temp.

Multiplier

Operating Temp.

Multiplier

°F

°C

°F

°C

250

121

1.003

900

482

1.044

300

149

1.006

950

510

1.047

350

177

1.009

1000

538

1.050

400

204

1.013

1050

566

1.053

450

232

1.016

1100

593

1.056

500

260

1.019

1150

621

1.059

550

288

1.022

1200

649

1.063

600

316

1.025

1250

677

1.066

650

343

1.028

1300

704

1.069

700

371

1.031

1350

732

1.072

750

399

1.034

1400

760

1.075

800

427

1.038

1450

788

1.078

850

454

1.041

1500

816

1.081

XVI. Setting and Testing (Contd.)

Table 12 lists the multiplier to be used based on temperature 
above the saturated temperature (degrees of superheat).

ColdDifferentialTestPressureForBackPressure

Compensation

When a conventional Series 19000 valve is to operate with a 
constant back pressure, the cold differential test pressure is 
the set pressure minus the constant back pressure.

Sample Calculations For Series 19000 safety relief 
valves (refer to Tables 11 and 12)
Set pressure 2500 psig (172.37 barg), temperature  
500º F (260.0ºC), backpressure atmospheric

Set Pressure .................................. 2500 psig (172.37 barg)
Multiplier (see Table 11) ............................................X1.019

Cold Differential Set Pressure

 ....... 2548 psig (175.68 barg)

Set pressure 2500 psig(172.37 barg), temperature 500º 
F(260ºC), constant backpressure 150 psig(10.34 barg).

Set Pressure  ................................  2500 psig (172.37 barg)
Minus Constant Back Pressure ............-150 psig(-10.34 barg)

Differential Pressure

 ...................... 2350 psig (165.13 barg)

Multiplier (see Table 11) ............................................X1.019

Cold Differential Set Pressure

 ............ .2395 psig(165.13 barg)

Set pressure 2500 psig (172.37), temperature  
100ºF (37.8ºC), constant backpressure 150 psig (10.34 
barg).

Set Pressure .................................. 2500 psig (172.37 barg)
Minus Constant Back Pressure ............ -150 psig (-10.34 barg)

Cold Differential Set Pressure 

 ...... 2350 psig (162.03 barg)

Set pressure 400 psig (27.58 barg) on superheated 
steam, temperature 650ºF  
(343.3ºC), backpressure atmospheric

Operating Temperature

 ............................. 650º F (343.3ºC)

Minus Temperature of
Saturated Steam at 

 

400 psig (27.58 barg) .............................  -448º F(-266.7ºC)
Degrees of Superheat ................................. 202º F(94.4ºC)
Set Pressure  ....................................  400 psig (27.58 barg)
Multiplier (see Table 12) ...........................................X1.013

Cold Differential Set Pressure

 ..........  405 psig (27.92 barg)

F. Blowdown

The blowdown for all Series 19000 valves is fixed. Do not 
attempt to adjust the blowdown on these valves. Typical 
blowdown is less than 10 percent. The blowdown under the 

Table 12:

 

Set Pressure Multipliers for Cold 

DifferentialTestPressure

Degrees of Superheat Temperature

Multiplier

°F

°C

100

38

1.006

200

93

1.013

300

149

1.019

400

204

1.025

500

260

1.031

600

316

1.038

700

371

1.044

800

427

1.050

Содержание Consolidated 19000 Series

Страница 1: ...Consolidated 19000 Series Safety Relief Valve Instruction Manual Rev E Baker Hughes Data Classification Public...

Страница 2: ......

Страница 3: ...ER 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 OPERA...

Страница 4: ...ted States Customary System USCS values are converted to metric values using the following conversion factors USCS Unit Conversion Factor Metric Unit in 25 4 mm lb 0 4535924 kg in2 6 4516 cm2 ft3 min...

Страница 5: ...ty Relief Valves 11 B 19096M DA BP Safety Relief Valves 11 X Consolidated 19000 Series SRV 12 A Metal Seat Valve 12 B Standard Cap Types 13 C Soft Seat Valve 14 D The 19096M DA BP Valve 15 XI Recommen...

Страница 6: ...33 C Test Media 33 D Setting the Valve 33 E Set Pressure Compensation 33 F Blowdown 34 G Simmer 35 H Seat Leakage 35 I Back Pressure Testing MS DA 35 J Hydrostatic Testing and Gagging 37 K Manual Popp...

Страница 7: ...if necessary on 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 conta...

Страница 8: ...e severe personal injury or death It is the owner s responsibility to specify and provide personal protective wear to protect persons from pressurized or heated parts Contact with pressurized or heate...

Страница 9: ...or tools selected Contact Baker Hughes 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...

Страница 10: ...ion when a valve is relieving 8 Maximum Allowable Working Pressure The maximum gauge pressure permissible in a vessel at a designated temperature A vessel may not be operated above this pressure or it...

Страница 11: ...e static pressure upstream of the valve and characterized by a rapid opening or pop action It is used for steam gas or vapor service 15 Set Pressure The gauge pressure at the valve inlet for which the...

Страница 12: ...s with the O ring seat seal option are identified by the suffix DA see Table 14 Lifting Levers Caps and Gags All Consolidated 19000 Series Valves are designed so that field conversion from the standar...

Страница 13: ...tion Minimum 20 F 28 C Maximum 600 F 315 C Seat tightness Set pressure of 50 psig 3 45 barg 92 percent 51 psig 3 52 barg 100 psig 6 8 barg 94 percent 101 psig 6 9 barg Maximum Rating 95 percent IX Int...

Страница 14: ...wn 34 Outlet Extension not shown 35 Outlet Flange not shown 41 Inlet Nipple Extension Optional not shown 42 Outlet Nipple Ext Optional not shown 18 9 12 13 17 10 11 6 10 4 2 5 1 9 4 2 5 Figure 1 19000...

Страница 15: ...H 19357L M 19357L M Excludes 19096M DA BP Note 3 Available for all 19000 valves Note 4 Can be provided with a gag if required Part No Nomenclature 14 Gag Bolt 15 Sealing Plug 16 Sealing Plug Gasket 17...

Страница 16: ...r 11 Spring 12 Adjusting Screw 13 Adj Screw Locknut 17 Cap Gasket 18 Screwed Cap 36 O Ring Retainer Lockscrew 37 O Ring Seat Seal 41 Inlet Nipple Extension Optional not shown 42 Outlet Nipple Extensio...

Страница 17: ...17 10 10 39 40 8 4 11 7 38 3 37 36 1 5 Figure 6 19000 DA BP Valve Construction Part No Nomenclature 1 Base 3 O Ring Retainer 4 Disc Holder 5 Guide 7 Bonnet Top 8 Bonnet Bottom 9 Spindle 10 Spring Wash...

Страница 18: ...ve shall not exceed three 3 percent of valve set pressure when the valve is allowing full capacity flow The inlet piping should never be smaller in diameter than the inlet connection of the valve Exce...

Страница 19: ...hanges Do not use fixed supports C Outlet Piping Alignment of the internal parts of the SRV is important to ensure proper operation see Figure 8 Although the valve body will withstand a considerable m...

Страница 20: ...nmental damage Before disassembling the valve ensure there is no media pressure in the vessel Many pressure vessels protected by Consolidated safety relief valves contain dangerous materials Decontami...

Страница 21: ...ord before removal Measure from the top of the screw to the adjusting screw locknut 13 c Loosen the adjusting screw locknut 13 and remove the adjusting screw 12 from the bonnet top 7 d Unscrew the bon...

Страница 22: ...the cutting action of the compound 8 To check the seating surfaces remove all compounds from both the seat and the lap Then shine the seat with the same lap using the lapping motion described above L...

Страница 23: ...ck align the base so that surfaces marked X and U run true within 001 0 03 mm on an indicator b Take light cuts on the seat surface until all damage is removed Reestablish dimensions B C F G H and Ang...

Страница 24: ...9 28 17 1 247 31 67 0 048 1 22 19096H 0 350 8 89 0 395 10 03 Flat Flat 0 457 11 61 0 503 12 78 0 030 0 76 19126H 0 401 10 19 0 453 11 51 Flat Flat 0 523 13 28 0 579 14 71 0 030 0 76 19226H 0 537 13 64...

Страница 25: ...457 11 61 0 503 12 78 0 022 0 56 19110H 0 375 9 53 0 395 10 03 N A 0 457 11 61 0 503 12 78 0 022 0 56 19126H 0 401 10 19 0 444 11 28 N A 0 523 13 28 0 579 14 71 0 022 0 56 19226H 0 537 13 64 0 616 15...

Страница 26: ...A 19226H 0 210 5 33 1 504 38 20 Flat 0 030 0 76 30 0 250 6 35 N A N A Table 5 19000 Series Soft Seat DA Base Re work Dimensions Valve Type A min B 002 in 0 05 mm C min D 002 in 0 05 mm E 003 in 0 08 m...

Страница 27: ...severely damaged or if dimension S minimum is exceeded see Figure 12 and Table 7 ATTENTION The O ring always should be replaced to ensure seat tightness 2 Polishing the base seat Normally the base se...

Страница 28: ...t Valve Type Disc Metal Seat O Ring Retainer Soft Seat Q R min S min Q R min S min 1 Design 2 Design in mm in mm in mm in mm in mm in mm in mm 19096L M 0 461 11 71 0 025 0 64 0 243 6 17 0 234 5 94 0 4...

Страница 29: ...d dimension S cannot be maintained see Table 7 3 Length S is less than S minimum see Table 7 C O Ring Seat Seal Assembly The O ring seat seal assembly parts should be replaced as follows 1 O ring seat...

Страница 30: ...bent see Figure 13 G 2 DA BP The spindle should be replaced if 1 The bearing surfaces V are galled pitted or scratched 2 The threads are torn stripped or galled 3 The spindle is bent 4 The O ring groo...

Страница 31: ...in 0 03 mm K L min Metal Seat MS Soft Seat DA Metal Seat MS Soft Seat DA in mm in mm in mm in mm in mm 19096L 0 661 16 79 0 810 0 007 20 57 0 18 0 810 0 007 20 57 0 18 1 701 43 21 1 701 43 21 19110L 0...

Страница 32: ...e bonnet seating surface and the bonnet and base threads 3 Use a clean base 1 lapped for the valve set pressure see seat width requirement Table 5 Place a lapped disc 2 on the base with lapped surface...

Страница 33: ...ng surfaces should be free of any nicks or scratches with a 63 RMS finish maximum Apply non copper based thread lubricant to the bonnet and base threads and guide seating surfaces Install the bonnet 6...

Страница 34: ...plate O ring 310XX030 40 in the O ring groove in the backup plate 39 using a small amount of O ring lubricant Verify that the backup plate seating surface on the bonnet bottom and the backup plate rin...

Страница 35: ...ned if changes are to be made to the set pressure or backpressure or if the service temperature changes Note This design will allow the set pressure to remain constant under superimposed variable back...

Страница 36: ...e Table 11 X1 019 Cold Differential Set Pressure 2548 psig 175 68 barg Set pressure 2500 psig 172 37 barg temperature 500 F 260 C constant backpressure 150 psig 10 34 barg Set Pressure 2500 psig 172 3...

Страница 37: ...ble 13 when the test medium is either air or water Table 13 Metal Seat Valve Leakage Rate Max Leakage Rate Approximate Leakage Rate Bubbles per minute ft3 per 24 hr Liters per 24 hr 40 0 06 16 99 Tabl...

Страница 38: ...s Repair of leaking valve joints may be attempted by tightening the leaking joint while the valve is still on the stand If this does not stop the leak disassemble and inspect the leaking joint If the...

Страница 39: ...conditions completely release the lever from maximum lift to snap the valve back on its seat Since in some cases the dead weight of the lever may have a tendency to lift the valve disc the lever shou...

Страница 40: ...003 Lapping compounds are identified in Table 17 Laps and the lapping plate may be purchased from Baker Hughes XVIII Maintenance Tools and Supplies Table 16 Laps Valve Part Number 19096L 19110L 19126L...

Страница 41: ...bles 19 and 20 to determine the parts to include in the inventory plan Select the desired parts and determine those required for proper maintenance of the valve population in the plant D Identificatio...

Страница 42: ...Table 19 Metal to Metal Seat Valves Class Part name Quantity Parts Size Type Material Valves in Service Need Coverage Probability I Disc Gaskets Cap 1 1 1 1 70 percent II Disc Holder Spindle Guide 1...

Страница 43: ...d parts Inventory Control Global access to spare parts inventories with your local Green Tag Center Baker Hughes s authorized sales representative Parts interchangeability Obsolete and excess inventor...

Страница 44: ...ormation The Baker Hughes logo Consolidated EVT ValvKeep and Green Tag are trademarks of Baker Hughes Company Other company names and product names used in this document are the registered trademarks...

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