DRESSER FLOW CONTROL CONSOLIDATED …

1 DRESSER FLOW CONTROL CONSOLIDATED pressure relief VALVE SPRING CHART 08-03-2001 Documents herein are copyrighted properties of DRESSER , Inc. Documents may only be used by those parties with written permission from DRESSER , Inc. Copying these document for distribution to parties other that those who have written permission from DRESSER Inc. is strictly prohibited. DRESSER Flow CONTROL DRESSER Inc. P O Box 1430 Alexandria, LA. USA 71309-1430 DRESSER Flow CONTROL CONSOLIDATED pressure relief Valve SPRING CHART INDEX 08-03-2001 TITLE EG# O-Ring Selection Chart 060 (Rev. 30) 1900 Metal Seat for Gas, Air & Steam Service (Excludes Liquid Services-See 346) 343 (Rev. 8) 1900 O-Rings for Gas, Air & Steam Service (Excludes Liquid Service-See 346) 347 (Rev. 3) 1900 LA & DALA Liquid Service 346 (Rev. 9) 1900 LS & DL SRV Liquid Service 424 ( ) 1900 Steam Internals (1900/P) 345 (Rev.)

2 0) Portables (1970, 1975, 1980, 1982, 1990, 2990 & 3990-Excludes Liquid Service 344 (Rev. 7) 1982, 820000,2990, 3990 Portable SRV Liquid Service 423 (Rev. 1) 19000L Metal Seat 376 (Rev. 8) 1900L O-Ring Seat 381 (Rev. 5) 19000M/19000H Metal Seat/O-Ring (Except-BP Design) 388 (Rev. 7) 19096M-BP 414 (Rev. 1) 19000PF- Metal Seat 418 (Rev. 1) 19000PF- O-Ring Seat 419 (Rev. 0) CONTINUED DRESSER Flow CONTROL CONSOLIDATED pressure relief Valve SPRING CHART INDEX 08-03-2001 TITLE EG# 13900 Pilot relief Valve 348 ( ) 3900 Pilot relief Valve (Except VMF-3S) 349 (Rev. 7) 3900 VFM-3S 370 ( ) 1510/1511 351 ( ) 1555/1556/1557/1558 352 ( ) 1811 353 (Rev. 5) 1700-S 354 (Rev. 2) 1700-RT 356 (Rev. 1) 2700 357 (Rev. 2) Old Steel (1491, 1496 &1685) 355 (Rev. 0) 1541, 1543, 2471, 2478 (Bronze) 350 (Rev. 1) 3900 Pilot relief Valve (Except VMF-3S) 349 (Rev.)

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