Data Sheet

ED Valve
D100017X012
Product Bulletin
51.1:ED
December 2012
5
ENVIRO-SEAL Packing System Specifications
Applicable Stem Diameters
J 9.5 mm (3/8 inches), J 12.7 (1/2), J 19.1 (3/4),
J 25.4 (1), and J 31.8 (1-1/4) diameter valve stems
Maximum Pressure/Temperature Limits
(1)
To Meet the EPA Fugitive Emission Standard of 100
PPM
(2)
For ENVIRO - SEAL PTFE and ENVIRO - SEAL Duplex packing
systems: full CL300 up to 232_C(450_F)
For ENVIRO
- SEAL Graphite ULF packing system: 104 bar
(1500 psig) at 316_C(600_F)
Construction Materials
PTFE Packing Systems
Packing Ring and Lower Wiper: PTFE V-ring
(3)
Male and Female Adaptor Rings: Carbon-filled PTFE
V-ring
Anti
- Extrusion Washer: Filled PTFE
Lantern Ring: S31600(316stainlesssteel)
Spring:
J 17-7PH stainless steel or J N06600
Packing Box Flange: S31600
Packing Follower: S31600 lined with carbon-filled PTFE
Packing Box Studs: Strain-hardened 316 stainless steel
Packing Box Nuts: 316 stainless steel SA194 Grade 8M
Graphite ULF Packing Systems
Packing Ring: Graphite rings
Spring:
J 17-7PH stainless steel or J N06600
Packing Box Flange: S31600
Packing Follower: S31600 lined with carbon-filled PTFE
Packing Box Studs: Strain-hardened 316 stainless steel
Packing Box Nuts: 316 stainless steel SA194 Grade 8M
1. Refer to the valve specifications in this bulletin for pressure/temperature limits of valve parts. Do not exceed the pressure/temperature rating of the valve. Do not exceed any applicable code
or standard limitation.
2. The Environmental Protection Agency (EPA) has set a limit of 100 parts per million (ppm) for fugitive emissions from a valve in selected VOC (VolatileOrganicCompound)services.
3. In vacuum service, reversing the ENVIRO-SEAL PTFE packing rings is not necessary.