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Custom Valve Gate Product Data
GATES OF GATE VALVE
Valve Gate: The core parts of flat gate valves used in the petrochemical industry require high pressure, wear resistance, corrosion prevention against H2S and CO2, especially wellhead and Christmas tree valves have higher requirements.
PRODUCT PARAMETERS
As shown below, here are some tables helping you know more about basic high performance valve gate data:
1. Common base material and chemical composition
Common base material and chemical composition（wt.%） | ||||||||||||||
|
Mat Type |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni |
Cu |
Nb |
Al |
Ti |
Co |
Fe |
4130 |
0.28-0.33 |
0.15-0.35 |
0.4-0.6 |
≤0.025 |
≤0.025 |
0.8-1.1 |
0.15-0.25 |
≤0.03 |
≤0.03 |
Bal |
||||
4140 |
0.38-0.45 |
0.15-0.35 |
0.75-1.0 |
≤0.025 |
≤0.025 |
0.8-1.1 |
0.15-0.25 |
Bal |
||||||
410 |
0.08-0.15 |
≤1.0 |
≤1.0 |
≤0.025 |
≤0.025 |
11.5-13.5 |
≤0.75 |
Bal |
||||||
410SS |
≤0.08 |
≤1.0 |
≤1.0 |
≤0.025 |
≤0.025 |
11.5-13.5 |
≤0.6 |
Bal |
||||||
F6NM |
≤0.05 |
≤0.6 |
0.5-1.0 |
≤0.025 |
≤0.025 |
11.5-14.0 |
0.5-1.0 |
3.5-5.5 |
Bal |
|||||
F51 |
≤0.03 |
≤1.0 |
≤2 |
≤0.025 |
≤0.025 |
21-23 |
2.5-3.5 |
4.5-6.5 |
Bal |
|||||
17-4PH |
≤0.07 |
≤1 |
≤1 |
≤0.025 |
≤0.025 |
15.0-17.5 |
3.0-5.0 |
3.0-5.0 |
0.15-0.45 |
Bal |
||||
Inconel625 |
≤0.1 |
≤0.5 |
≤0.5 |
≤0.015 |
≤0.015 |
20-23 |
8-10 |
Bal |
3.15-4.15 |
≤0.4 |
≤0.4 |
≤1 |
≤5 |
|
Inconel718 |
≤0.08 |
≤0.35 |
≤0.35 |
≤0.015 |
≤0.015 |
17-21 |
2.8-3.3 |
50-55 |
≤0.3 |
4.75-5.5 |
0.2-0.8 |
0.65-1.15 |
≤1 |
Bal |
2. Specifications and Models
Specifications |
product levels |
Manufacturing precision |
|
inch |
mm |
PSL |
|
1-13/16 |
46 |
PSL1
PSL2
PSL3
PSL3G
PSL4
|
Parallelism：≤0.02
Flatness：≤2 light bands
Roughness：≤0.1
|
2-1/16 |
52 |
||
2-9/16 |
65 |
||
3-1/16 |
78 |
||
3-1/8 |
80 |
||
4-1/16 |
103 |
||
4-1/8 |
105 |
||
5-1/16 |
128 |
||
5-1/8 |
130 |
||
6-1/16 |
150 |
||
7-1/16 |
180 |
||
3. Material property requirements
Material property requirements | ||||
Material designation |
Yield strength |
Tensile strength |
Elongation |
Reduction in area |
(σ0.2min,psi) |
(σb min,psi) |
(δ4 gauge 2 inches,%min) |
（ψ,%min） |
|
36K |
36000 |
70000 |
21 |
No requirement |
45K |
45000 |
70000 |
19 |
32 |
60K |
60000 |
85000 |
18 |
35 |
75K |
75000 |
95000 |
18 |
35 |
4. Material class requirements
Material requirements | |||||
Material class |
Corresponding corrosion |
H2S partial pressure （psi） |
CO2 partial pressure (psi) |
General material |
|
AA |
General service |
No corrosion |
4130、4140 |
||
BB |
General service |
Slight corrosion |
7-30 |
410 |
|
CC |
General service |
Moderate to high corrosion |
>30 |
410 |
|
DD |
Sour service |
No corrosion |
>0.05 |
4130、4140 |
|
EE |
Sour service |
Slight corrosion |
>0.05 |
7-30 |
410 |
FF |
Sour service |
Moderate to high corrosion |
>0.05 |
>30 |
410 |
HH |
Sour service |
Serious corrosion |
>0.05 |
>30 |
625、718 |
5. Pressure class
Pressure class | ||
Grade |
PSI |
MPa |
2M |
2000 |
15 |
3M |
3000 |
20 |
5M |
5000 |
35 |
10M |
10000 |
70 |
15M |
15000 |
105 |
20M |
20000 |
140 |
6. Temperature rating
Temperature ratings | ||
Temperature classification |
Operating range(℃) |
|
Min |
Max |
|
K |
-60 |
82 |
L |
-46 |
82 |
N |
-46 |
60 |
P |
-29 |
82 |
S |
-18 |
60 |
T |
-18 |
82 |
U |
-18 |
121 |
V |
-18 |
121 |
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