API Trim Chart: Hardfaced/Stellited/410/304/316 Valve
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VALVE TRIM MATERIALS, API 600 TRIM CHART / API Trim Chart: Hardfaced/ Stellited/ 410/ 304/ 316 Valves Suppliers in India
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VALVE TRIM MATERIALS
The trim of a valve is the set of replaceable parts of a valve. The trim shall be selected carefully, depending on process parameters as fluid, working temperature / pressure and valve type. The API 600 norm defined standard numbers to indentify the trim in terms of combinations of materials for the replaceable parts of the valve.
API 600 TRIM CHART
API TRIM #
MATERIAL
SEAT
DISC
BACKSEAT
STEM
1
410
410
410
410
410
2
304
304
304
304
304
3
F310
310
310
310
310
4
Hard 410
Hard 410
410
410
410
5
Hardfaced
Stellite
Stellite
410
410
5A
Hardfaced
Ni-Cr
Ni-Cr
410
410
6
410 and Cu-Ni
Cu-Ni
Cu-Ni
410
410
7
410 and Hard 410
Hard 410
Hard 410
410
410
8
410 and Hardfaced
Stellite
410
410
410
8A
410 and Hardfaced
Ni-Cr
410
410
410
9
Monel
Monel
Monel
Monel
Monel
10
316
316
316
316
316
11
Monel
Stellite
Monel
Monel
Monel
12
316 and Hardfaced
Stellite
316
316
316
13
Alloy 20
Alloy 20
Alloy 20
Alloy 20
Alloy 20
14
Alloy 20 and Hardfaced
Stellite
Alloy 20
Alloy 20
Alloy 20
15
304 and Hardfaced
Stellite
Stellite
304
304
16
316 and Hardfaced
Stellite
Stellite
316
316
17
347 and Hardfaced
Stellite
Stellite
347
347
18
Alloy 20 and Hardfaced
Stellite
Stellite
Alloy 20
Alloy 20
TRIM SELECTION
TRIM
RECOMMENDED SERVICE
13% Cr, Type 410 Stainless Steel
For oil and oil vapors and general services with heat treated seats and wedges.
13% Cr, Type 410 plus Hardfacing
Universal trim for general service requiring long service life up to 1100°F (593°C).*
Type 316 Stainless
For liquids and gases which are corrosive to 410 Stainless Steel, up to 1000°F (537°C).*
Monel
For corrosive service to 842°F (450°C) such as acids, alkalies, salt solutions, etc.
Alloy 20
For corrosive service such as hot acids -49°F to 608oF (-45°C to 320°C).
NACE
Specially treated 316 or 410 trim combined optionally with B7M Bolts and
2HM nuts to meet NACE MR-01-75 requirements.
Full Stellite
Full hard faced trim, suitable for abrasive & severe services up to 1200°F (650°C).*