Instruction Manual
D100399X012
EW Valve
July 2017
43
Figure 24. Typical Fisher EWT Valve Assemblies
VIEW A
FLOW UP
VIEW A
FLOW DOWN
47.6 TO 136.5 mm (1.875 TO 5.375 INCH)
PORT DIAMETERS
FLOW DIRECTION
WHISPER TRIM
STD TRIM
CAVITROL TRIM
178 mm (7 INCH) AND 203 mm (8 INCH)
PORT DIAMETER
NPS 4x2 THROUGH 12x6 VALVE
WITH STANDARD CAGE AND METAL SEAT
WITH OPTIONAL DRAIN PLUG
NPS 12x8 VALVE
WITH STANDARD CAGE
DETAIL OF PTFE SEAT AND VALVE PLUG
WITH 2‐PIECE SEAL RING
DETAILS OF VALVE PLUG WITH
SPRING‐LOADED SEAL RING
APPLY LUB
43A8590‐B
55A8288‐B
43A8592‐B
A2069‐2
43A8590‐B
43A8590‐B
CORRECT SPRING‐LOADED SEAL
RING ORIENTATION