Type A41C Safety Valve
Safety Valves, angle type
Low lift safety valve
Metal to metal seated
Flanged connection acc. to ANSI B16.5
Applications:
Provided as safety device for protection against excessive pressure in pressure vessels.
Approved for gases, vapours and fluids.
Working temperatures:
-60°C up to +200°C for stainless steel material
-29°C up to 300°C for cast steel material
Standards Compliance:
Design and Manufacture: API RP 520
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 |
22.5 |
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 |
| Nominal Diameter (in) |
Dimensions(mm) Inlet flange 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 |
| Nominal Diameter (in) |
Dimensions(mm) Inlet flange 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 |
| Nominal Diameter (in) |
Dimensions(mm) Inlet flange 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 |
| Nominal Diameter (in) |
Dimensions(mm) Inlet flange 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 |
Remark: 300Lb for outlet flange
Materials for main parts
| NO |
Name of part |
Materials A41H-C |
Materials A41Y-P |
Materials A41Y-R |
| 1 |
Body |
WCB |
304 |
316 |
| 2 |
Nozzle |
2Cr13/ 304 |
304 |
316 |
| 3 |
Adjusting Ring |
2Cr13/ 304 |
304 |
316 |
| 4 |
Disc |
2Cr13/ 304 |
304 |
316 |
| 5 |
Guide sleeve |
2Cr13/ 304 |
304 |
316 |
| 6 |
Bonnet |
ZG230-450 |
ZG230-450 |
ZG230-450 |
| 7 |
Spring |
50CrVA |
50CrVA coated teflon |
50CrVA coated teflon |
| 8 |
Stem |
2Cr13 |
304 |
316 |
| 9 |
Adjusting bolt |
45 |
2Cr13 |
2Cr13 |
| 10 |
Cap |
ZG200-400 |
ZG200-400 |
ZG200-400 |
| Sealing surface of material "H" depositing D507, "Y" depositing stellite |
Essential:
Valves are delivered at a set pressure, therefore when ordering
Please confirm set pressure, medium and temperature
TS
Safety accessory and Safety protection device
Manufacture License of Special Equipment, People's republic of China
