Fisher A41 - Page 4

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Figure 2. Maximum P ressure/Temperature Ratings
NOTE:
TEMPERATURE LIMITATIONS DO NOT ACCOUNT FOR THE ADDITIONAL
LIMITATIONS IMPOSED BY THE BACKUP RING USED WITH THIS SEAL.
TO DETERMINE THE EFFECTIVE TEMPERATURE LIMITATION OF THE
APPROPRIATE SEAL/BACKUP RING COMBINATION, REFER TO TABLE 4.
1
A6306-2
OPERATING TEMPERATURE, _C
OPERATING TEMPERATURE, _F
DIFFERENTIAL PRESSURE, PSI
PHOENIX III SEAL
WITH PTFE INSERT
PTFE AND REINFORCED
PTFE SEAL
UHMWPE
SEAL
Table 4. Construction Material Temperature Limits
COMPONENTS AND MATERIALS OF CONSTRUCTION
TEMPERATURE LIMITS
_C _F
Valve Body Material
Carbon Steel
CF8M
CG8M
-29 to 427
-198 to 538
-198 to 538
-20 to 800
-325 to 1000
-325 to 1000
Disc Material
S31600
CG8M
-198 to 538
-198 to 538
-325 to 1000
-325 to 1000
Shaft Material
S20910
S17400
-198 to 538
-62 to 427
-325 to 1000
-80 to 800
Bearing Material
PEEK / PTFE lined
Metal
-73 to 260
-198 to 538
-100 to 500
-325 to 1000
Packing Material
PTFE V-rings
Graphite rings
-46 to 232
-198 to 438
-50 to 450
-325 to 1000
Seal Ring
PTFE (Standard) -46 to 232 -50 to 450
Reinforced PTFE Soft Seal Ring -46 to 232 -50 to 450
UHMWPE Soft Seal Ring -18 to 93 0to200
NOVEX Metal Seal Ring -46 to 538 -50 to 1000
NPS 2 Metal Seal ring -46 to 538 -50 to 1000
Phoenix III Metal Seal Ring
Fluorocarbon backup ring -40 to 232 -40 to 450
Phoenix III Fire-Tested
(1)
Metal Seal Ring
Fluorocarbon backup ring
(Specify metal bearings and graphite packing)
(1) (1)
1. For component selection and applicable fire-tested standards and codes, consult your Emerson Process Management sales office.