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Product Bulletin

Fisher EH and EHA Control Valves - 14722 EH and EHA Valves

51.2:EHMarch 2009

Specifications (continued)

Packing Arrangements Class V shutoff for EHT above 232 C(450 Single, double, and leakoff standardpacking arrangements, or optional F) using PEEK anti-extrusion rings, ClassV shutoff for EHD 4-3/8 inch port and smaller forup to 593 HIGH-SEALpacking systems; see Fisher bulletin 59.1:061, ENVIRO-SEAL C (1100 F) using C-seal trim and EHD5-3/8 inch port and larger for up to 593 and HIGH-SEAL PackingSystems for Sliding-Stem Valves C(1100 F) using Bore Seal trim, lubricator/isolating valve for packing lubrication,and Yoke Boss Diameters for Actuator Mounting NPS 8 and 10 CL2500 Valves: 127 mm(5 inch H liner with integral seat ring (EHA Seriesvalves only) See tables 20 and 21. Options for NPS 20 ValveTool Kit:
(10) ) yoke boss diameter Includes tools useful duringmaintenance [3 sets of lifting eyes, 2 hoist rings,flushing plate with either All Other Sizes and Ratings: 127 mm (5 inchH
(10) ) or 178 mm (7 inch) yoke boss diameter two O-rings for usewhen flushing fluid is 149 NPS 20 Valve: 177.8 mm (7 inches) C (300 F) or less or two silver-plated N04400 gaskets for use whenflushing fluid is over 149 Approximate Weight C (300 F), valve stemlifting nut, lapping fixture and handle, and tampingtools] See tables 22 and 23 Options Special Cage Characterization: Standard,Cavitrol, or Whisper Trim cage openings asnecessary to provide the required installed flowcharacteristic O-ring seat ring gasket constructions
(6) , driver for removing and installing of seat ring retainer,
1. In flow up applications only, NPS 6 to 14 EHD and EHT and NPS 8 EHAD and EHAT valves are available with a diverter cone valve plug construction to provide increased stability for higherpressure drops. See figure 11, 16, and 27. Diverter cone valve plug construction is also used for NPS 6 EHD and EHT and NPS 8 EHAD and EHAT applications requiring Whisper Trim III LevelA, B, or C cages. Again, for flow up applications only.2. EN (or other) ratings and end connections can usually be supplied; please consult your Emerson Process Management sales office.3. The pressure or temperature limits in this bulletin and any applicable standard limitations should not be exceeded.4. Modified equal percentage characteristic is equal-percentage for the first 90% of travel, then quick-opening for additional capacity.5. EHS may be used for flow down in special cases. Please consult your Emerson Process Management sales office NPS 1 and 2 valves with Micro-Form plugs can only be used for flow upapplications6. O-ring seat ring gasket construction is preferred where temperature allows and is standard for EHT valves. See table 13 and figure 25.7. For temperatures above 204 C (400 F), the following CF8M (316 SST) valves must be derated: NPS 8 and 10 ASME Special CL1500 or 2500 valves; NPS 12 and 14 ASME Standard orSpecial CL2500 valves. For more information, contact your Emerson Process Management sales office.8. NPS 8 to 14 flow up for boiler feedwater service with pressure drop greater than 69 bar (1000 psi) when a diverter plug is used.9. Valves using an equal percentage cage may be traveled an additional 13 mm (0.5 inch) if desired to obtain additional capacity; flow characteristic becomes modified equal percentage.10. H indicates heavy actuator-to-body bolting. NoteNeither Emerson, Emerson ProcessManagement, nor any of their affiliatedentities assumes responsibility for theselection, use, or maintenance of anyproduct. Responsibility for theselection, use, and maintenance of anyproduct remains with the purchaserand end-user.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, theyare not to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use orapplicability. All sales are governed by our terms and conditions, which are available upon request. We reserve the right to modify or improve thedesigns or specifications of such products at any time without notice. Neither Emerson, Emerson Process Management, nor any of their affiliatedentities assumes responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use, and maintenance ofany product remains solely with the purchaser and end-user. Cavitrol, ENVIRO-SEAL, Whisper Trim, and Fisher are marks owned by one of the companies in the Emerson Process Management businessdivision of Emerson Electric Co. Emerson Process Management, Emerson, and the Emerson logo are trademarks and service marks of EmersonElectric Co. C-seal is a mark owned by Pressure Science, Inc. All other marks are the property of their respective owners. This product may becovered by one or more of the following patents: 5,129,625; 5,131,666; 5,056,757; 5,230,498; and 5,299,812 or under pending patents. Emerson Process Management Marshalltown, Iowa 50158 USASorocaba, 18087 Brazil Chatham, Kent ME4 4QZ UK Dubai, United Arab EmiratesSingapore 128461 Singapore www.Fisher.com 44 Fisher Controls International LLC 1982, 2009; All Rights Reserved