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Products>API A41C low lift safety valve

API A41C low lift spring loaded safety valve(relief valve)

Standards Compliance:
Design and Manufacture: API RP 520/ASME VIII 
Face to Face(end to end): API 526
Test and Inspection: API 527

Main property specifiecation

Mormal Pressure
PN
150
300
600
900
150
Body strength
Ps(Mpa)
3.0
7.5
15
23
38
Set pressure
Pk(Mpa)
0.1-2
1.6-5
3.2-10
8-25
10-25
Seal pressure
Pm(Mpa)
90%Pk
Reseation pressure
Ph(Mpa)
≥90%Pk
Relieving Pressure
Pp(Mpa)
≤1.1Pk
Lift height
H(mm)
≥1/20 d0
Appropriate       temp.
C(WCB)
P, R (SS304, SS316)
≤300℃
≤200℃ 
Appropriate       Medium
Air, Oil, Steam, Water, Corrosive medium
 
 
Code of throat diameter
 
Code
Diameter
Code
Diameter
D
10
L
20
E
13
M
55
F
16
N
60
G
20.5
P
72
H
26
Q
96
J
33
R
115
K
40
T
148

Main Dimensions

A41C150, A41C150P, A41C150R      
Size(in)
                                                      Dimensions(mm)   150Lb
d0
D
D1
D2
b
t
Z-Φd
DN'
D'
D1'
D2'
b
t
Z'-Φd'
L
L1
H
1/2" x 1/2"
D
89
60.5
35
12
5
4-15
15
89
60.5
35
12
1.6
4-15
90
90
260
3/4" x 1"
D
98
70
43
14
5
4-15
25
108
79.5
51
15
1.6
4-15
96
92
280
1" x 1"
D
108
79.5
51
15
5
4-15
25
108
79.5
51
15
1.6
4-15
100
100
290
1" x 2"
E
108
19.5
51
15
5
4-15
50
152
120.5
92
18
1.6
4-19
115
105
290
11/2" x1 1/2"
G
127
98.5
73
18
5
4-15
40
127
98.5
73
18
1.6
4-15
121
124
330
11/2" x2"
G
127
98.5
73
18
5
4-15
50
152
120.5
92
18
1.6
4-19
121
124
330
2" x 3"
J
152
120.5
92
18
5
4-19
80
190
152.5
127
22
1.6
4-19
124
136
350
Remark: 150Lb for outlet flange
A41C300, A41C300P, A41C300R
Size(in)
                                                         Dimensions(mm)   300Lb
d0
D
D1
D2
b
t
Z-Φd
DN'
D'
D1'
D2'
b
t
Z'-Φd'
L
L1
H
1/2" x 1/2"
D
95
66.5
35
15
5
4-15
15
89
60.5
35
12
1.6
4-15
90
90
260
3/4" x 1"
D
117
82.5
43
16
5
4-19
25
108
79.5
51
15
1.6
4-15
96
92
280
1" x 1"
D
124
89
51
18
5
4-19
25
108
79.5
51
15
1.6
4-15
100
100
290
1" x 2"
E
124
89
51
18
5
4-19
50
152
120.5
92
18
1.6
4-19
115
105
290
11/2" x1 1/2"
G
156
114.5
73
20
5
4-22
40
127
98.5
73
18
1.6
4-15
121
124
330
11/2" x2"
G
156
114.5
73
20
5
4-22
50
152
120.5
92
18
1.6
4-19
121
124
330
2" x 3"
J
165
127
92
23
5
8-19
80
190
152.5
127
22
1.6
4-19
124
136
350
Remark: 150Lb for outlet flange
A41C600, A41C600P, A41C600R
Size(in)
                                                         Dimensions(mm)   600Lb
d0
D
D1
D2
b
t
Z-Φd
DN'
D'
D1'
D2'
b
t
Z'-Φd'
L
L1
H
3/4" x 1"
D
118
82.5
43
16
7
4-15
25
108
79.5
51
15
1.6
4-15
105
110
280
1" x 2"
D
124
89
51
20
7
4-19
50
152
120.5
92
18
1.6
4-19
115
105
290
11/2" x1 1/2"
F
156
114.5
73
22
7
4-22
40
127
98.5
73
18
1.6
4-15
147
162
330
11/2" x2"
F
156
114.5
73
22
7
4-22
50
152
120.5
92
18
1.6
4-19
147
162
330
Remark: 150Lb for outlet flange
A41C900, A41C900P, A41C900R
Size(in)
                                                         Dimensions(mm)   900Lb
d0
D
D1
D2
b
t
Z-Φd
DN'
D'
D1'
D2'
b
t
Z'-Φd'
L
L1
H
1" x 11/2"
d0
150
101.6
51
28
7
4-25
40
156
114.5
73
20
1.6
4-22
125
125
320
11/2" x1 1/2"
F
178
123.8
73
32
7
4-29
40
156
114.5
73
20
1.6
4-22
150
195
350
11/2" x2"
F
178
123.8
73
32
7
4-29
50
165
127
92
22
1.6
8-19
140
105
350
Remark: 300Lb for outlet flange


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