Baker Hughes Consolidated 1811 FA-0-3X1-20 Instruction Manual Download Page 3

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Consolidated 1811 Series Safety Valve Instruction Manual

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NOTICE

For valve configurations not listed

in this manual, please contact

your local

Green Tag

™ Center for

assistance.

All the USCS values are converted to

metric values using the following conversion factors:

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

Conversion Table

Note: Multiply USCS value with conversion factor to get metric value.

Summary of Contents for Consolidated 1811 FA-0-3X1-20

Page 1: ...Consolidated 1811 Series Safety Valves Instruction Manual Rev E Baker Hughes Data Classification Public...

Page 2: ...UIREMENTS 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 CONN...

Page 3: ...nter for assistance All the 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...

Page 4: ...oning a Ring Lap 14 E Spindle Runout 15 F Spring and Spring Washers 15 XII Inspection and Part Replacement A General Information 16 B Specific Steps 16 XIII Reassembly 20 XIV Setting and Testing A Ste...

Page 5: ...some instances of human hazards the pictorial may instead depict what preventive measures to take such as wearing protective equipment The bottom panel may contain an instruction message on how to av...

Page 6: ...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 the valve during actuation can poss...

Page 7: ...r personal safety nor valve safety will be jeopardized by the method and or tools selected Contact Baker Hughes if there are any questions relative to tools methods The installation and start up of va...

Page 8: ...sure existing at the outlet of a safety valve device due to pressure in the discharge system Blowdown Blowdown is the difference between actual popping pressure of a safety valve and actual reseating...

Page 9: ...ated lift is the design lift at which a valve attains its rated relieving capacity Safety Valve A safety valve is a pressure relief valve actuated by inlet static pressure and characterized by rapid o...

Page 10: ...sed to prevent dirt from entering the outlet port while bolting in place While hoisting to the installation care should be exercised to prevent bumping the valve against steel structures and other obj...

Page 11: ...Bushing 3 Disc 4 Lower Adjusting Ring 5 Lower Adjusting Ring Pin 6 Upper Adjusting Ring 7 Upper Adjusting Ring Pin 8 Yoke 9 Base Stud 10 Stud Nut 11 Spindle 12 Bottom Spring Washer 13 Spring 14 Top S...

Page 12: ...hould be large enough to accommodate the full capacity of the valve without causing steam to escape by flowing backward through the drip pan In no case should the pipe connected to the valve be of a s...

Page 13: ...dle to the top of the compression screw Record this for use in reassembly to restore the correct spring compression 7 Loosen the compression screw lock nut and remove the compression screw 8 Remove th...

Page 14: ...ne time but having a sufficient supply on hand will save reconditioning time during a boiler outage After the boiler is back in operation the ring laps can be reconditioned on the flat lapping plate L...

Page 15: ...his chamfer should not exceed 002 05mm If the seating surfaces require extensive lapping or reconditioning machining should be considered prior to lapping See Inspection Section XII B for criteria Cov...

Page 16: ...found to be acceptable Other parts of the spindle not used as working surfaces may run out considerably more than 007 0 18 mm but this should not be regarded as unacceptable Although the upper thread...

Page 17: ...sure HP version Disc 1811 LP LP FSD TD HP HP Table 2 XII Inspection and Part Replacement 1811 HP Flat Solid Disc Machining Dimensions Figure 9 HP Flat Solid Disc Table 3a Flat Seat Disc Replacement Cr...

Page 18: ...shown in Figures 9 11 replacement with the current improved design Thermodisc is recommended The 1811 HP LP Thermodisc is designed for steam service and are standard on all new 1811 Safety Valves The...

Page 19: ...4 780 005 121 41 0 13 149 002 3 78 0 05 XII Inspection and Part Replacement Cont 3 Clearance between the disc and upper ring guide Measure the inside diameter of the guide and the outside diameter of...

Page 20: ...028 002 003 0 71 0 05 0 08 206 002 003 5 23 0 05 0 08 3 958 100 53 P 3 364 85 45 3 718 002 002 94 44 0 05 0 05 039 002 003 0 99 0 05 0 08 245 002 003 6 22 0 05 0 08 4 458 113 23 Q 4 424 112 37 4 818...

Page 21: ...the compression screw into the yoke reestablish the original relationship between compression screw and spindle as measured in disassembly Step 6 Then tighten the compression screw lock nut 7 Raise th...

Page 22: ...until it moves freely Reduce the compression in the spring by turning the adjusting screw counter clockwise one turn as viewed from the top of the valve Replace the cap and lifting lever and retest th...

Page 23: ...djusting ring is interfering with the blowdown of the valve To correct a hang up gag the valve remove the lower ring pin and lower the adjusting ring one notch as viewed through the ring pin hole move...

Page 24: ...sides of the yoke as shown in Figure 14 Do not apply the gag load until the boiler hydrostatic pressure is equal to 80 of the pressure to which the low set valve is adjusted 3 Apply the gag load by t...

Page 25: ...g area between valves of the same size and type will also affect accuracy With well calibrated gauges and valve seats in good condition accuracy on the order of 1 of set pressure may be expected Upon...

Page 26: ...indle compression screw spindle straightness etc C Operating too close to set pressure C Lower operating pressure and or retrofit to Thermodisc design D Discharge stack binding on valve outlet D Corre...

Page 27: ...1672805 M 1672810 G 1672805 N 1672811 H 1672806 P 1672811 J 1672807 Q 1672812 K 1672808 L 1672809 Lubricants Brand Application Points Size Container Part No Nickel Ease All threaded connections 2 oz...

Page 28: ...n the top edge of the outlet flange Be sure to include the one or two letters preceding the figures in the serial number A typical valve nameplate is shown in Figure 15 CONSOLIDATED CERTIFIED BY TYPE...

Page 29: ...n Upper 1 3 1 1 II 4 Adj Ring Lower 1 5 1 3 85 6 Adj Ring Upper 1811B 1 5 1 3 Adj Ring Upper 1811D 1 5 1 3 11 Spindle 1 5 1 3 III 2 Seat Bushing 1 5 1 3 95 12 Bottom Spring Washer 1 Set 5 1 Set 3 13 S...

Page 30: ...ushing replacements code welding pilot replacement etc For further information please contact your Green Tag Center C Maintenance Training Rising costs of maintenance and repair in the Utility and Pro...

Page 32: ...ormation The Baker Hughes logo Consolidated Green Tag EVT and Thermodisc are trademarks of Baker Hughes Company Other company names and product names used in this document are the registered trademark...

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