Data Sheet

ES Valve
D100021X012
Product Bulletin
51.1:ES
December 2012
5
Table 1. Class VI Shutoff Availability
Valve Port Size, Inches Seat Minimum Seat Load
ES
± 7
Metal 300 lbs/lineal inch
Table 2. Class VI Trim Materials
VALVE CAGE/SEAT RING RETAINER VALVE PLUG SEAT RING
TRIM TEMPERATURE LIMIT
_C _F
ES S31600 (316 SST) / ENC S31600/CoCr-A (alloy 6) seat S31600 Not a limiting factor Not a limiting factor
ENVIRO-SEAL, HIGH-SEAL
Packing Systems
ENVIRO-SEAL and HIGH-SEAL packing systems offer
excellent sealing capabilities. They easily install in your
existing valves or can be purchased with new valves.
These s ystems may help prevent the loss of process
fluid. The long operational life and reliability of these
systems also helps to reduce your maintenance costs
and downtime.
For applications requiring compliance with
environmental protection regulations, the unique
Fisher ENVIRO-SEAL packing system (figure 3) and a
unique ENVIRO-SEAL bellows seal system (figure 4) are
offered. The emission control packing system helps to
keep emission concentrations below the EPA 100 ppm
requirement.
For an excellent stem seal in applications that are not
environmentally-sensitive, the Fisher HIGH -SEAL
Graphite ULF packing system is offered. The
HIGH-SEAL packing system provides excellent sealing
at pressure/temperature ratings beyond ENVIRO-SEAL
limits.
ENVIRO-SEAL packing systems, available with PTFE,
Graphite ULF, or Duplex packing, and the HIGH-SEAL
packing systems, Graphite ULF and graphite
composite, feature live-loading and unique
packing-ring arrangements for long-term, consistent
sealing performance.
Class VI Shutoff
Capabilities
ES valves with metal seat constructions can provide
ANSI/FCI Class VI shutoff capabilities. See tables 1 and
2.