Data Sheet

A31A Valve
D500191X012
Product Bulletin
21.1:A31A
October 2013
6
Table 1. Materials of Construction and Temperature Ratings
COMPONENT AND MATERIAL OF CONSTRUCTION
(1)
TEMPERATURE RANGE
_C _F
Valve Body
(2)
Carbon steel (WCC or SA 516-70)
(7)
-29 to 427 -20 to 800
CF8M (316 SST) CL150 and 300 -198 to 538 -325 to 1000
CF8M
(3)
FMS 20B16 a Fisher material standard (0.04% min carbon) CL300 over 538 to 816 over 1000 to 1500
Disc
WCC carbon steel, for NPS 14 through 24
CF8M (316 SST)
-29 to 427
-198 to 538
-20 to 800
-325 to 1000
CF8M
(3)
FMS 20B16 a Fisher material standard (0.04% min carbon) CL300 over 538 to 816 over 1000 to 1500
Disc Coating
Chromium Carbide
Chrome Plating
Chromium Coating
Electroless Nickel Coating (ENC)
-198 to 916
-254 to 316
-254 to 593
-254 to 343
-325 to 1500
-425 to 600
-425 to 1100
-425 to 650
Shaft
S20910
S17400 (17-4 pH 1025)
S17400 (17-4 pH H1150M)
N07718
N07750
-198 to 538
-73 to 427
-196 to 427
-254 to 704
over 593 to 816
-325 to 1000
-100 to 800
-320 to 800
-425 to 1300
over 1100 to 1500
Bearings
(6)
PEEK (standard) -73 to 260 -100 to 500
S31600
(4)
-198 to 816 -325 to 1500
R30006 (Alloy 6) -198 to 816 -325 to 1500
Bronze -254 to 302 -425 to 575
Packing
PTFE Packing and PTFE ENVIRO-SEAL Packing
Graphite packing
Graphite packing with oxidizing media
Graphite ENVIRO-SEAL Packing
-198 to 232
-198 to 916
-198 to 538
-198 to 315
-325 to 450
-325 to 1500
-325 to 1000
-325 to 600
Seal Ring and Backup Ring
PTFE Seal Ring
Nitrile Backup O-Ring
Chloroprene Backup O-Ring
EPR Backup O-Ring
Fluorocarbon Backup O-Ring
PTFE Backup O-Ring
-29 to 93
-43 to 149
-54 to 182
-29 to 204
-73 to 204
-20 to 200
-45 to 300
-65 to 360
-20 to 400
-100 to 400
UHMWPE
(5)
Seal Ring (CL150 Only)
Nitrile Backup O-Ring
Chloroprene Backup O-Ring
EPR Backup O-Ring
Fluorocarbon Backup O-Ring
PTFE Backup O-Ring
-29 to 93
-43 to 93
-54 to 93
-29 to 93
-73 to 93
-20 to 200
-45 to 200
-65 to 200
-20 to 200
-100 to 200
Phoenix II I and/or Fire Tested Construction
S31600 and PTFE Seal Ring with Nitrile Backup O-Ring
Chloroprene Backup O-Ring
EPR Backup O-Ring
Fluorocarbon Backup O-Ring
-40 to 149
-54 to 149
-62 to 204
-40 to 232
-40 to 300
-65 to 300
-80 to 400
-40 to 450
Seal Ring
NOVEX S31600 Seal
(4)
Ring (CL150) -29 to 816 -20 to 1500
NOVEX S31600 Seal
(4)
Ring (CL300) -29 to 816 -20 to 1500
NOVEX S21800 Seal
(4)
Ring (CL300) -29 to 816 -20 to 1500
1. NACE trim constructions are available; consult your Emerson Process Management sales office.
2. Special gasket retainer bolts are required for over 482_C(900_F)
3. Special retaining ring screws for single flange valves over 538_C (1000_F)
4. For a complete material description, contact your Emerson Proces s Management sales office.
5. UHMWPE stands for ultra high molecular weight polyethylene.
6. Special thrust bearings are required for high temp. applications over 343_C(650_F)(with6and12-inch shaft extensions). Constructions with carbon steel valves and SST discs may require
special thrust bearings a t temps. less than 343_C(650_F).
7. Cast or wrought/plate grades used interchangeably, depending on availability, unless specified by customer.