Instruction manual
A31A Valve
Instruction Manual
Form 5291
March 2008
4
Table 2. Material Temperature Ratings
COMPONENT AND MATERIAL OF CONSTRUCTION
(1)
TEMPERATURE RANGE
_C _F
Valve Body
Carbon Steel (WCC or SA 516-70)
(5)
CF8M (316 SST) CL150
CF8M FMS 20B16 (0.04% min. carbon) CL300
29 to 427
198 to 538
198 to 816
20 to 800
325 to 1000
325 to 1500
Disc
CF8M (316 SST) w/ or w/o Hard coating
CF8M with CoCr-A edge (Alloy 6)
198 to 538
198 to 816
325 to 1000
325 to 1500
Shaft
S20910
S17400 (17-4 PH 1025)
S17400 (17-4 PH H1150M)
198 to 538
73 to 454
196 to 454
325 to 1000
100 to 850
320 to 850
Bearings
PEEK
(2)
(standard)
S31600
(3)
73 to 260
198 to 816
100 to 500
325 to 1500
Packing
PTFE Packing and PTFE ENVIRO-SEAL Packing
Graphite packing
Graphite packing with oxidizing media
54 to 232
198 to 916
198 to 538
65 to 450
325 to 1500
325 to 1000
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
(4)
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 III and/or FireTested 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
(3)
Ring (CL150)
NOVEX S31600 Seal
(3)
Ring (CL300)
NOVEX S21800 Seal Ring (CL300)
46 to 538
46 to 816
46 to 816
50 to 1000
50 to 1500
50 to 1500
1. NACE trim constructions are available; consult your Emerson Process Management sales office.
2. PEEK stands for poly-ether-ether-ketone.
3. For a complete material description, contact your Emerson Process Management sales office.
4. UHMWPE stands for ultra high molecular weight polyethylene.
5. Cast or wrought/plate grades used interchangeably, depending upon availabilityunless specified by customer.
Installation
The valve is normally shipped as part of a control
valve assembly, with the power actuator mounted on
the valve. If the valve or actuator have been
purchased separately, or if the actuator has been
removed for maintenance, mount the actuator on the
valve, and adjust actuator travel before installing the
valve into the line. This is necessary due to the
measurements that must be made during the
actuator calibration adjustment process. Refer to the
Actuator Mounting section of this manual and to the
separate actuator instruction manual for mounting
and adjusting instructions before proceeding.
WARNING
To avoid personal injury or property
damage resulting from the sudden
release of pressure:
D Always wear protective gloves,
clothing, and eyewear when
performing any maintenance
operations to avoid personal injury.
D Do not install the valve assembly
where service conditions could exceed