A48C

A48C

Type A48C - Safety Valve

 

Safety Valves, angle type

 

Full lift safety valve

Standard safety valve for fluids

Metal to metal seated, with lifting device,

Inlet: Flanged connection acc. to ANSI B16.5

Outlet: Flanged connection acc. to ANSI B16.5

 

Open bonnet

 

Applications:

Provided as safety device for protection against excessive pressure

in pressure vessels.

Approved for gases, vapours and fluids.

Working temperatures: 

-10°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
Body strength Ps(Mpa) 3.0 7.5 15
Set pressure Pk(Mpa) 0.1-2 1.6-5 3.2-10
Seal pressure Pm(Mpa) 90%Pk
Reseation pressure Ph(Mpa) ≥90%Pk
Relieving Pressure Pp(Mpa) ≤1.03Pk
Lift height H(mm) ≥1/4 d0
Appropriate            temp. ≤300℃
Appropriate       Medium Fluids, Steam

 

Code of throat diameter

 

Code Diameter Code Diameter
D 10 L 50
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

 

A48C150
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 90 290
3/4" x 1" D 98 70 43 14 5 4-15 25 108 79.5 51 15 1.6 4-15 96 92 310
1" x 11/2" D 108 79.5 51 15 5 4-15 40 127 98.5 73 18 1.6 4-15 115 105 320
1" x 2" D 108 79.5 51 15 5 4-15 50 152 120.5 92 18 1.6 4-19 115 105 320
11/2" x 2" G 127 98.5 73 18 5 4-15 50 152 120.5 92 18 1.6 4-19 121 124 350
11/2" x 21/2" G 127 98.5 73 18 5 4-15 65 178 139.5 105 20 1.6 4-19 121 124 360
11/2" x3" G 127 98.5 73 18 5 4-15 80 190 152.5 127 22 1.6 4-19 124 130 360
2" x21/2" H 152 120.5 92 18 5 4-19 65 178 139.5 105 20 1.6 4-19 124 130 380
2" x 3" J 152 120.5 92 18 5 4-19 80 190 152.5 127 22 1.6 4-19 124 130 380
21/2" x 4" J 178 139.5 105 20 5 4-19 100 229 190.5 157 24 1.6 8-19 143 137 380
3" x 4" L 190 152.5 127 22 5 4-19 100 229 190.5 157 24 1.6 8-19 162 156 480
4" x 6" N 229 190.5 157 24 10 8-19 150 279 241.5 216 26 1.6 8-22 210 197 540
6" x 8" P 279 241.5 216 26 10 8-22 200 343 298.5 270 29 1.6 8-22 241 240 760
8" x10" R 343 298.5 270 29 10 8-22 250 406 362 324 31 1.6 12-25 279 276 830
12" x14" T 483 432 381 32 10 12-25 350 533 476 413 35 1.6 12-29 370 360 890

Remark: 150Lb for outlet flange

 

A48C300
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 3/4" D 95 66.5 35 15 5 4-15 20 98 70 43 14 1.6 4-15 90 90 290
3/4" x 1" D 117 82.5 43 16 5 4-19 25 108 79.5 51 15 1.6 4-15 96 92 310
1" x 11/2" D 124 89 51 18 5 4-19 40 127 98.5 73 18 1.6 4-15 115 105 320
1" x 2" D 124 89 51 18 5 4-19 50 152 120.5 92 18 1.6 4-19 115 105 320
11/2" x 2" F 156 114.5 73 20 5 4-22 50 152 120.5 92 18 1.6 4-19 121 124 350
11/2" x 21/2" F 156 114.5 73 20 5 4-22 65 178 139.5 105 20 1.6 4-19 121 124 360
11/2" x3" F 156 114.5 73 20 5 4-22 80 190 152.5 127 22 1.6 4-19 124 130 360
2" x21/2" H 165 127 92 22 5 8-19 65 178 139.5 105 20 1.6 4-19 124 130 380
2" x 3" H 165 127 92 22 5 8-19 80 190 152.5 127 22 1.6 4-19 124 130 380
21/2" x 4" J 190 149 105 24 5 8-22 100 229 190.5 157 24 1.6 8-19 143 137 380
3" x 4" L 210 168.5 127 28 5 8-22 100 229 190.5 157 24 1.6 8-19 162 156 480
4" x 6" N 254 200 157 32 10 8-22 150 279 241.5 216 26 1.6 8-22 210 197 540
6" x 8" P 318 270 216 38 10 12-22 200 343 298.5 270 29 1.6 8-22 241 240 760
8" x10" R 381 330 270 42 10 12-25 250 406 362 324 31 1.6 12-25 279 276 830

Remark: 150Lb for outlet flange

 

A48C600
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 4-19 25 108 79.5 51 15 1.6 4-15 96 92 230
1" x 2" D 124 89 51 19 7 4-19 50 152 120.5 92 18 1.6 4-19 115 105 320
11/2" x 2" F 156 114.5 73 22 7 4-22 50 152 120.5 92 18 1.6 4-19 152 124 360
11/2" x 21/2" F 156 114.5 73 22 7 4-22 65 178 139.5 105 20 1.6 4-19 152 124 380
11/2" x3" F 156 114.5 73 22 7 4-22 80 190 152.5 127 22 1.6 4-19 152 124 380
2" x21/2" H 165 127 92 26 7 8-19 65 178 139.5 105 20 1.6 4-19 162 154 410
2" x 3" H 165 127 92 26 7 8-19 80 190 152.5 127 22 1.6 4-19 162 154 410
21/2" x 4" K 190 149 100 29 7 8-22 100 229 190.5 157 24 1.6 8-19 143 165 410
3" x 4" K 210 168 127 32 10 8-22 100 229 190.5 157 24 1.6 8-19 162 155 480
4" x 6" N 273 216 157 38 10 8-25 150 279 241.5 216 26 1.6 8-22 210 200 540
6" x 8" P 356 292 216 46 10 12-29 200 343 298.5 270 29 1.6 8-22 241 240 760

Remark: 150Lb for outlet flange

 

Materials for main parts

 

NO Name of part Materials A48Y-C Materials A48Y-P Materials A48Y-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 "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

 

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