Type A42C Safety Valve
Safety Valves, angle type
Full lift safety valve
Standard safety valve for fluids
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) |
≥1/4 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
| A42C150, A42C150P, A42C150R |
| 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 3/4" | D | 89 | 60.5 | 35 | 12 | 5 | 4-15 | 20 | 98 | 70 | 43 | 14 | 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 | 92 | 92 | 280 |
| 1" x 11/2" | D | 108 | 79.5 | 51 | 15 | 5 | 4-15 | 40 | 127 | 98.5 | 73 | 18 | 1.6 | 4-15 | 105 | 105 | 290 |
| 1" x 2" | D | 108 | 79.5 | 51 | 15 | 5 | 4-15 | 50 | 152 | 120.5 | 92 | 18 | 1.6 | 4-19 | 105 | 105 | 290 |
| 11/2" x 2" | G | 127 | 98.5 | 73 | 18 | 5 | 4-15 | 50 | 152 | 120.5 | 92 | 18 | 1.6 | 4-19 | 124 | 124 | 320 |
| 11/2" x 21/2" | G | 127 | 98.5 | 73 | 18 | 5 | 4-15 | 65 | 178 | 139.5 | 105 | 20 | 1.6 | 4-19 | 124 | 124 | 340 |
| 11/2" x3" | G | 127 | 98.5 | 73 | 18 | 5 | 4-15 | 80 | 190 | 152.5 | 127 | 22 | 1.6 | 4-19 | 130 | 130 | 340 |
| 2" x21/2" | J | 152 | 120.5 | 92 | 18 | 5 | 4-19 | 65 | 178 | 139.5 | 105 | 20 | 1.6 | 4-19 | 130 | 130 | 360 |
| 2" x 3" | J | 152 | 120.5 | 92 | 18 | 5 | 4-19 | 80 | 190 | 152.5 | 127 | 22 | 1.6 | 4-19 | 130 | 130 | 360 |
| 21/2" x 4" | J | 178 | 139.5 | 105 | 20 | 5 | 4-19 | 100 | 229 | 190.5 | 157 | 24 | 1.6 | 8-19 | 137 | 137 | 360 |
| 3" x 4" | L | 190 | 152.5 | 127 | 22 | 5 | 4-19 | 100 | 229 | 190.5 | 157 | 24 | 1.6 | 8-19 | 156 | 156 | 450 |
| 4" x 6" | N | 229 | 190.5 | 157 | 24 | 10 | 8-19 | 150 | 279 | 241.5 | 216 | 26 | 1.6 | 8-22 | 197 | 197 | 510 |
| 6" x 8" | P | 279 | 241.5 | 216 | 26 | 10 | 8-22 | 200 | 343 | 298.5 | 270 | 29 | 1.6 | 8-22 | 240 | 240 | 740 |
| 8" x10" | R | 343 | 298.5 | 270 | 29 | 10 | 8-22 | 250 | 406 | 362 | 324 | 31 | 1.6 | 12-25 | 276 | 276 | 810 |
| 12" x14" | T | 483 | 432 | 381 | 32 | 10 | 12-25 | 350 | 533 | 476 | 413 | 35 | 1.6 | 12-29 | 360 | 360 | 860 |
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 |
| 11/2" x2" |
F |
178 |
123.8 |
73 |
32 |
10 |
4-29 |
50 |
152 |
120.5 |
92 |
18 |
1.6 |
4-19 |
115 |
124 |
360 |
| 2" x 3" |
H |
216 |
165.1 |
92 |
38 |
10 |
8-25 |
80 |
190 |
152.5 |
127 |
22 |
1.6 |
4-19 |
162 |
154 |
390 |
| 3" x4" |
J |
241 |
190.5 |
127 |
38 |
10 |
8-25 |
100 |
229 |
190.5 |
157 |
24 |
1.6 |
8-19 |
181 |
184 |
480 |
| 4" x6" |
K |
292 |
234.9 |
157 |
44 |
12 |
8-32 |
150 |
279 |
241.5 |
216 |
26 |
1.6 |
8-22 |
222 |
197 |
540 |
Remark: 150Lb for outlet flange
| A41C1500, A41C1500P, A41C1500R |
| Nominal Diameter (in) |
Dimensions(mm) Inlet flange 1500Lb |
| d0 |
D |
D1 |
D2 |
b |
t |
Z-Φd |
DN' |
D' |
D1' |
D2' |
b' |
t |
Z'-Φd' |
L |
L1 |
H |
| 3/4" x 1" |
D |
130 |
88.9 |
43 |
20 |
10 |
4-22 |
25 |
124 |
89 |
51 |
18 |
1.6 |
4-19 |
120 |
136 |
310 |
| 11/2" x 2" |
D |
178 |
123.8 |
73 |
26 |
12 |
4-28 |
50 |
165 |
127 |
92 |
22 |
1.6 |
8-19 |
140 |
105 |
360 |
| 11/2" x 21/2" |
F |
178 |
123.8 |
73 |
26 |
12 |
4-28 |
65 |
190 |
149 |
105 |
24 |
1.6 |
8-22 |
152 |
124 |
360 |
| 2" x 3" |
F |
216 |
165.1 |
92 |
32 |
15 |
8-25 |
80 |
210 |
168.5 |
127 |
28 |
1.6 |
8-22 |
162 |
154 |
380 |
| 3" x 4" |
J |
267 |
203.2 |
127 |
42 |
14 |
8-32 |
100 |
254 |
200 |
157 |
32 |
1.6 |
8-22 |
181 |
184 |
490 |
Remark: 300Lb for outlet flange
Materials for main parts
| NO |
Name of part |
Materials A42H-C |
Materials A42Y-P |
Materials A42Y-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 |
| 11 |
Bellows |
304 |
316 |
316 |
| 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
