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Product Bulletin

51.2:EHMarch 2009

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

Table 11. Trim Material Combinations (NPS 1-1/2 x 1 through 6 Globe and NPS 3 through 8 Angle Valves)

OPERATINGTEMPERATURE RANGE SOURSERVICE(NACE) DESIGNATION VALVE PLUG CAGE SEAT RING SEAT RINGRETAINER DegreesCelsius DegreesFahrenheit WITH STANDARD CAGE S41600 (416 SST) heat-treated
(2) S44004 (440C SST)heat-treated forMicro-Flute valveplugs S17400 (17-4PHSST) H1075 heat-treated S17400H1150 heat-treatedchrome coat 50
(1) S41600heat-treated −29 to 427 −20 to 800 No 53
(3) (EHD/EHAD and EHS/EHAS valvesonly) S31600 (316 SST)with CoCr-A (Alloy 6)seat and guide CA28MWV(422 SST)nitrided N07718heat-treatedchrome coat CoCr-A 427 to 566 800 to 1050 No S31600with CoCr-Aseat and guide N07718 heat-treated chrome coat 54 CF8M (316 SST)chrome coat CoCr-A −38 to 593 −100 to 1100 No S31600with CoCr-Aseat and guide S17400H1150 heat-treatedchrome coat 56 CF8MENC CoCr-A
(4) −40 to 149 −40 to 300 Yes 57(O-ring seatring only) S17400H1150 heat-treatedchrome coat S44004heat-treated S17400H1075heat-treated S44004heat-treated 0 to 232 32 to 450 No WITH CAVITROL III TRIM CAGE CB7CU-1H1075 heat-treated S17400H1150 heat-treatedchrome coat 58
(1) S44004heat-treated S44004
(4) 0 to 232 32 to 450 No S31600with CoCr-Aseat and guide CB7CU-1H1150 heat-treated S17400H1150 heat-treatedchrome coat 59 CoCr-A
(4) −40 to 232 −40 to 450 Yes WITH WHISPER TRIM III CAGE S41600heat-treated S17400(17-4H900 SST)heat-treated forNPS 6 EH and NPS 8EHA valves CB7CU-1H1075heat-treated S17400H1150 heat-treatedchrome coat 60 S41600heat-treated −29 to 427 −20 to 800 No CA28MWVnitrided S31600with CoCr-Aseat and guide N00718 heat-treated chrome coat 61 WC9 nitridedfor NPS 6 EH andNPS 8 EHA valves CoCr-A −29 to 566 −20 to 1050 No S31600with CoCr-Aseat and guide CB7CU-1H1150 heat-treated S17400H1150 heat-treatedchrome coat 62 CoCr-A
(4) −40 to 232 −40 to 450 Yes
1. Recommended for boiler feedwater service due to amine problems when using Alloy 6.2. 17-4H900 stainless steel heat-treated is used when a diverter cone valve plug is specified for port diameters equal to and larger than 4.375 inches.3. This trim designation not available with the O-ring seat ring gasket construction due to temperature limitations.4. This trim designation uses the O-ring seat ring gasket construction. See table 13 for O-ring temperature limits. 19