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Class 150~1500 A42C Type Pound-grade full lift spring loaded safety valve
 
Main property and specification
Normal Pressure PN 150 300 600 900 1500
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 8~15 10~25
seal pressure Pm 90%Pk
Reseating pressure Ph ≥90%Pk
Relieving pressure Pp ≤1.1Pk
Lift H (mm) ≥1/4 do
Appropriate temperature C ≤300℃
P、R ≤200℃
Appropriate medium Water, Oil, Air, steam, Corrosive medium

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
safety valve
A41C-150 (P, R) A41C-300 (P, R)
A41C-600 (P, R) A41C-900 (P, R)
A41C-1500 (P, R)
CLAss 150~1500 A42C Type Pound-grade full lift spring loaded safety valve

Main Dimension
A42C150, A42C150P, A42C150R
Normal
Diameter DN (in)		 Dimension (mm)
do D D1 D2 b t z-￠d DN’ D’ D1’ D2’ b’ t’ z-￠d’ L L1 H
1/2"×3/4" D 89 60.5 35 12 6 4-15 20 98 70 43 14 1.6 4-15 90 90 260
3/4" ×1" D 98 70 43 14 10 4-15 25 108 79.5 51 15 1.6 4-15 96 92 280
1" ×1 1/2" D 108 79.5 51 15 7 4-15 40 127 98.5 73 18 1.6 4-15 115 105 290
1" ×2" D 108 79.5 51 15 7 4-15 50 152 120.5 92 18 1.6 4-19 115 105 290
1 1/2" ×2" G 127 98.5 73 18 6 4-15 50 152 120.5 92 18 1.6 4-19 121 124 320
1 1/2" ×2 1/2" G 127 98.5 73 18 6 4-15 65 178 139.5 105 20 1.6 4-19 121 124 340
1 1/2" ×3" G 127 98.5 73 18 6 4-15 80 190 152.5 127 22 1.6 4-19 124 130 340
2" ×2 1/2" J 152 120.5 92 18 6 4-19 65 178 139.5 105 20 1.6 4-19 124 130 360
2" ×3" J 152 120.5 92 18 6 4-19 80 190 152.5 127 22 1.6 4-19 124 130 360
2 1/2" ×4" J 178 139.5 105 20 7 4-19 100 229 190.5 157 24 1.6 8-19 143 137 360
3" ×4" L 190 152.5 127 22 10 4-19 100 229 190.5 157 24 1.6 8-19 162 156 450
4" ×6" N 229 190.5 157 24 12 8-19 150 279 241.5 216 26 1.6 8-22 229 181 510
6" ×8" P 279 241.5 216 26 10 8-22 200 343 298.5 270 29 1.6 8-22 241 240 740
8" ×10" R 343 298.5 270 29 10 8-22 250 406 362 324 31 1.6 12-25 279 276 810
12" ×14" T 483 432 381 32 10 12-25 350 533 476 413 35 1.6 12-28 370 360 860

A42C300, HA42C300P, A42C300R
Normal
Diameter DN (in)		 Dimension(mm)
do D D1 D2 b t z-￠d DN’ D’ D1’ D2’ b’ t’ z-￠d’ L L1 H
1/2"×3/4" D 95 66.5 35 15 6 4-15 20 98 70 43 14 1.6 4-15 90 90 260
3/4" ×1" D 117 82.5 43 16 10 4-19 25 108 79.5 51 15 1.6 4-15 96 92 280
1" ×1 1/2" D 124 90 51 18 7 4-19 40 127 98.5 73 18 1.6 4-15 115 105 290
1" ×2" D 124 90 51 18 6 4-19 50 152 120.5 92 18 1.6 4-19 115 105 290
1 1/2" ×2" G 156 114.5 73 20 6 4-22 50 152 120.5 92 18 1.6 4-19 121 124 320
1 1/2" ×2 1/2" G 156 114.5 73 20 9 4-22 65 178 139.5 105 20 1.6 4-19 121 124 340
1 1/2" ×3" G 156 114.5 73 20 6 4-22 80 190 152.5 127 22 1.6 4-19 124 130 340
2" ×2 1/2" H 165 127 92 22 6 8-19 65 178 139.5 105 20 1.6 4-19 124 130 360
2" ×3" J 165 127 92 22 6 8-19 80 190 152.5 127 22 1.6 4-19 124 130 360
2 1/2" ×4" J 190 149.5 105 24 7 8-22 100 229 190.5 157 24 1.6 8-19 143 137 360
3" ×4" L 210 168 127 28 10 8-22 100 229 190.5 157 24 1.6 8-19 162 156 450
4" ×6" N 254 200 157 32 12 8-22 150 279 241.5 216 26 1.6 8-22 229 181 510
6" ×8" P 318 270 216 38 10 12-22 200 343 298.5 270 29 1.6 8-22 241 240 740
8" ×10" R 381 330 270 42 10 12-25 250 406 362 324 31 1.6 12-25 279 276 810
Remark: 150Lb for outlet flange

A42C600, A42C600P, A42C600R
Normal
Diameter DN (in)		 Dimension(mm)
do D D1 D2 b t z-￠d DN’ D’ D1’ D2’ b’ t’ z-￠d’ L L1 H
3/4"×1" D 117 82.5 43 16 10 4-19 25 108 79.5 51 15 1.6 4-15 96 92 290
1" ×2" D 124 90 51 19 6 4-19 50 152 120.5 92 18 1.6 4-19 115 105 290
1 1/2’ ×2" D 156 114.5 73 22 10 4-22 50 152 120.5 92 18 1.6 4-19 152 124 340
1 1/2" ×2 1/2" D 156 114.5 73 22 11 4-22 65 178 139.5 105 20 1.6 4-19 152 124 350
1 1/2" ×3" F 156 114.5 73 22 6 4-22 80 190 152.5 127 22 1.6 4-19 152 124 350
2" ×2 1/2" F 165 127 92 26 6 8-19 65 178 139.5 105 20 1.6 4-19 162 154 380
2" ×3" F 165 127 92 26 6 8-19 80 190 152.5 127 22 1.6 4-19 162 154 380
2 1/2" ×4" H 190 149.5 105 29 7 8-22 100 229 190.5 157 24 1.6 8-19 143 165 380
3" ×4" L 210 168 127 32 10 8-22 100 229 190.5 157 24 1.6 8-19 162 155 460
4" ×6" N 273 215.9 157 38 12 8-25 150 279 241.5 216 26 1.6 8-22 210 200 520
6" ×8" P 356 292 216 46 10 12-28 200 343 298.5 270 29 1.6 8-22 241 240 750
Remark: 150Lb for outlet flange

WA42C900, A42C900P, A42C900R
Normal
Demeter DN (in)		 Dimension(mm)
do D D1 D2 b t z-￠d DN’ D’ D1’ D2’ b’ t’ z-￠d’ L L1 H
1 1/2" ×2" F 178 124 73 32 10 4-28 50 152 120.5 92 18 1.6 4-19 115 124 360
2" ×3" H 216 165.1 92 38 10 8-25 80 190 152.5 127 22 1.6 4-19 162 154 390
3" ×4" J 241 190.5 127 38 10 8-25 100 229 190.5 157 24 1.6 8-19 181 184 480
4" ×6" K 292 235 150 44 12 8-32 150 279 241.5 216 26 1.6 8-22 222 197 540
Remark: 150Lb for outlet flange

WA42C1500, A42C1500P, A42C1500R
Normal
Demeter DN (in)		 Dimension(mm)
do D D1 D2 b t z-￠d DN’ D’ D1’ D2’ b’ t’ z-￠d’ L L1 H
3/4" ×1" D 130 89 43 20 10 4-22 25 124 90 51 18 1.6 4-19 120 136 310
1 1/2" ×2" D 178 124 73 26 12 4-28 50 165 127 95 22 1.6 8-29 140 105 360
1 1/2" ×2 1/2" F 178 124 73 26 12 4-28 65 190 149.5 105 24 1.6 8-22 152 124 360
2" ×3" G 216 165 92 32 15 8-25 80 210 168 127 28 1.6 8-22 162 154 380
3" ×4" J 267 206.2 127 42 14 8-32 100 254 200 157 32 1.6 8-22 181 184 490
Remark: 300Lb for outlet flange
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A48sC Type Pound-grade full lift spring loaded safety valve
 
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