Data Sheet

EW Valve
D100023X012
Product Bulletin
51.1:EW
August 2012
5
Figure 1. Fisher EWD Valve with Standard Cage
NOTE:
THE NPS 10x8 VALVE IS SIMILAR IN APPEARANCE TO S IZES THROUGH NPS 12x6. HOWEVER, THE NPS 10x8 USES THE LOAD RING SHOWN FOR THE NPS 12x8.
ITDOESNOTUSETHECAGERETAINER.
NPS 12x8 CONSTRUCTION
LOAD RING
CAGE
RETAINER
TYPICAL OF CONSTRUCTIONS THROUGH NPS 12x6
SEAT
RING
GASKET
SEAT
RING
CAGE
VALVE
PLUG
GRAPHITE PISTON
RING
PTFE V-RING
PACKING
PIN
BONNET
GASKET
SHIM
SPIRAL
WOUND
GASKET
W9035
W9036
STANDARD CONSTRUCTION
(SEAT PARTS ALSO TYPICAL OF OPTIONAL
EWS PTFE SEATING
)
SOFT BACKUP
RING
SEAL
RING
METAL DISC
RETAINER
PTFE
DISC
METAL
DISC SEAT
RETAINING
RING
METAL
BACKUP
RING
SEAL RING
(SHOWN POSITIONED
FOR USE WITH
STANDARD AND
CAVITROL CAGES)
SEAL RING
(SHOWN POSITIONED
FOR USE WITH
STANDARD AND
CAVITROL CAGES)
137 mm (5.375 INCH)
AND SMALLER PORTS
178 mm (7 INCH)
AND LARGER PORTS
VALVE PLUG WITH OPTIONAL
PRESSURE- ASSISTED SEAL RING
W0992-3
W0995-2
W2914--1 / IL
Figure 2. Fisher EWT Trim Details