Data Sheet

ET Valve
D100022X012
Product Bulletin
51.1:ET
December 2012
2
Features
 Compliance with the Clean A ir Act–ENVIRO-SEAL™
packing systems (figures 9 and 10) that provide an
improved stem seal to help prevent the loss of
process fluid are available. These packing systems
featurePTFEorGraphiteULFpackingwith
live-loading for reduced packing maintenance.
 PTFE Seating for Long-Lasting Shutoff
Capability–Controlled compression of standard
seat construction protects PTFE disk between metal
disk seat and disk retainer (figure 1). Only the edge
of the PTFE disk is contacted by the flowstream
during normal operation. Excellent shutoff is
maintained by a backup ring or spring-loading that
forces the valve plug seal ring against the cage
(figure 1).
 Valve Plug Stability– Rugged cage guiding provides
high valve plug stability, which reduces vibration
and mechanical noise.
 Cost-Effective Operation and Maintenance
Economy–Increased wear resistance of hardened
stainless steel trim means longer-lasting service.
When inspection or maintenance is necessary, the
body can stay in the pipeline during removal of trim
parts. Balanced valve plug construction permits use
of smaller, lower-cost Fisher actuators. The ETR
valve also permits easy body interior access without
having to remove the bonnetoractuator(figure3).
And, trim inventory costs are cut because
dimensional standardization permits use of most
standard easy-etrimparts.
 Compliance with European Standards–Valvesare
available with dimensions specified by EN/DIN
standards. See figure 15.
 Sour Service Capability– Unless otherwise noted,
references are to NACE MR0175-2002. Optional
materials are available to meet NACE MR0103 and
NACE MR0175 / ISO 15156. Material r equirements
under these standards vary by edition and year of
issue; the specific standard must be specified.
Table of Contents
Features 2.....................................
Specifications 3................................
ENVIRO-SEAL Packing System
Specifications 4..............................
ENVIRO-SEAL and HIGH-SEAL
Packing Systems 6...........................
ANSI/FCI Class VI Shutoff
Capabilities 6................................
Tables
Available Constructions 5.......................
Shutoff Classifications 5........................
Class VI Shutoff Availability 6....................
Class VI Trim Materials 6........................
Trim Materials 10..............................
Materials and Temperature Limits for
Other Parts 17..............................
Valve Body/Trim Temperature
Capabilities 18.............................
Bonnet Selection Guidelines 19..................
Maximum Flow Coefficients 19..................
Port Diameters, Valve Plug Travel,
Stem and Yoke Boss Diameters 20.............
Metal Trim Parts 23............................
Bolting Materials and Temperature Limits 23......
Dimensions 24.................................
Ordering Information 27.........................