Data Sheet

Sliding-Stem Live-Loaded Packing
Product Bulletin
59.1:061
July 2009
6
ENVIRO-SEAL Packing System Specifications
Applicable Sliding-Stem Valve Designs and Stem
Diameters
See tables 1 and 2
Pressures and Temperatures
(1)
See bulletin 59.1:062, Packing Selection
Guidelines for Sliding-Stem Valves.
Construction Materials
PTFE Packing Systems:
Packing Ring and Lower Wiper: PTFE V-ring
(2).
Male and Female Adaptor Rings: Carbon-filled
PTFE V-ring
Optional Male and Female Adaptor Rings:
Glass-filled PTFE V-ring
Graphite ULF Packing Systems:
Packing Rings: Graphite
Anti-Extrusion Washer: Filled PTFE (not
required for graphite packing)
Lantern Ring: S31600 (316 stainless steel) (not
required for graphite packing)
Packing Box Flange: S31600
Spring: N07718
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 The pressure/temperature limits in this bulletin, in the valve bulletin, and any applicable code or standard limitation, should not be exceeded.
2. In vacuum service, it is not necessary to reverse the ENVIRO-SEAL PTFE packing rings.
HIGH-SEAL Packing System Specifications
Applicable Sliding-Stem Valve Designs
CL600:
J easy-e
(1)
, J YD, and J YS
CL1500:
J CAV4, J HPD, J HPS, and J HPT
CL2500:
J EHD, J EHS, J EHT, J HPD,
J HPS, and J HPT
Applicable Stem Diameters
Millimeters:
J 9.5, J 12.7, J 19.1, J 25.4,
J 31.8, and J 50.8
Inches:
J 3/8, J 1/2, J 3/4, J 1, J 1-1/4, and
J 2
Maximum Pressures and Temperatures
(2)
See bulletin 59.1:062, Packing Selection
Guidelines for Sliding-Stem Valves.
Construction Materials
Packing Rings: Carbon/graphite composition,
graphite, and zinc
Packing Box Bushing: Graphite
Packing Box Flange, Studs, and Nuts: S31600
(316 stainless steel) (other materials are available
on request)
Springs:
J S17700 (17-7 stainless steel) or
J N07718
1. easy-e includes ED, ES, ET, EW, and EZ valves.
2. The pressure/temperature limits in this bulletin, in the valve bulletin, and any applicable code or standard limitation, should not be exceeded.