Emerson Fisher 8540, Инструкция по эксплуатации

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Instruction Manual
D104709X012
8540 Valve
September 2021
3
WARNING
Always wear protective gloves, clothing, and eyewear when performing any installation operations to avoid personal
injury.
To avoid personal injury or property damage resulting from the sudden release of pressure, do not install the valve
assembly where service conditions could exceed the limits given in this manual, the limits on the appropriate nameplates,
or the matching pipe flange rating. Use pressure‐relieving devices as required by government or accepted industry codes
and good engineering practices.
Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
If installing into an existing application, also refer to the WARNING at the beginning of the Maintenance section in this
instruction manual.
WARNING
When ordered, the valve configuration and construction materials were selected to meet particular pressure, temperature,
pressure drop, and controlled fluid conditions. Responsibility for the safety of process media and compatibility of valve
materials with process media rests solely with the purchaser and end-user. To avoid possible personal injury and because
some valve/trim material combinations are limited in their pressure drop and temperature ranges, do not apply any other
conditions to the valve without first contacting your
Emerson sales office .
Table 3. Construction Material Temperature Limits
(1)
COMPONENTS AND MATERIALS OF
CONSTRUCTION
TEMPERATURE LIMITS
_
C
_
F
Valve Body Material
Carbon Steel
CF8M - 29 to 427
- 198 to 538
- 20 to 800
- 325 to 1000
Disk Material
CF8M -198 to 538 -325 to 1000
Shaft Material
S17400 -62 to 427 -80 to 800
Bearing Material
PEEK / PTFE lined -46 to 232 -50 to 450
Packing Material
PTFE V - Rings -46 to 232 -50 to 450
Seal Ring
PTFE (standard) Soft Seal Ring -46 to 232 -50 to 450
1. Refer to Ordering Matrix for 8540 Valves. For selection temperatures not shown above, contact your Emerson sales office .
1. Install a three‐valve bypass around the control valve assembly if continuous operation is necessary during
inspection and maintenance of the valve.
2. Inspect the valve to be certain that it is free of foreign material.
CAUTION
Be certain that adjacent pipelines are free of any foreign material, such as pipe scale or welding slag, that could damage the
valve sealing surfaces.