精品文献
快速直通(国标)
FISHER直通阀
www.Fisher.com Fisher r Sliding -Stem Valve Selection Guide Typical Fisher Sliding-Stem Control Valves W8861 W7957-2 easy -e?GX TBX STEAM CONDITIONING VALVE X0165 A broad range of Fisher valves, sizes, and materials is offered – fromNPS1/2 for general service to NPS20 and larger for demanding high -pressure steam, hydrocarbon, and noise services. FIELDVUE? digital valve controllers offer digital c
