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Spring-loaded full-opening safety valve with wrench
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Spring-loaded full-opening safety valve with wrench

Product Overview

Series

a48y-16c, a48y-25, a48y-40, a48y-64, a48y-100, a44y-16c, a44y-25, a44y-40, a44y-64, a44y-100, a44y-16p, a44y-25p, a44y-40p, a44y-64p, a44y-100p, a44y-16r, a44y-25r, a44y-40r, a44y-64r, a44y-100r


Application

A48Y type is suitable for equipment and pipeline of air, steam and other media with working temperature ≤ 350°C. A44Y type is suitable for equipment or pipeline of air, petroleum and other media with working temperature ≤ 300°C.

A44Y type is suitable for the equipment or pipeline of air, petroleum and other media with the working temperature ≤ 300℃, as the overpressure protection device.
Connection flange standard PN＜6.4MPa is according to the standard of JB/T-94 series 1. PN≥6.4MPa is according to the standard of JB/T-94 series 2.

Specifications

Main parts and materials
No. Parts Name A48Y-C/A44Y-C Materials A44Y-P Material A44Y-R Materials
1 Valve body WCB ZG1Cr18Ni9Ti CF8M
2 Valve Seat 2Crl3 1Cr18Ni9Ti 316
3 Adjustment ring ZG2Crl3 ZG1Cr18Ni9Ti 0cr18Ni12Mo2Ti
4 反冲盘 ZG2Crl3 ZG1Cr18Ni9Ti 316
5 Valve disc 2Cr13 1Cr18Ni9Ti 316
6 Guide sleeve 2Cr13 1Cr18Ni9Ti 0Cr18Ni12Mo2Ti
7 Valve cover ZG230-450 ZG1Cr1818Ni9Ti CF8M
8 Spring 50CrVA 50CrVA coated fluoroplastic 50CrVA coated fluoroplastic
9 Valve stem 2Crl3 1Cr18Ni9Ti 1Cr18Ni12Mo2Ti
10 Wrench ZG200-400 ZG230-450 ZG200-400
11 Adjusting screw 45 2Cr13 2Cr13
12 Protective cover ZG200-400 ZG1Cr18Ni9Ti 316
Sealing surface material Surfacing Co-based cemented carbide
* The content is for reference only. Please contact us for more information.
Main dimensions
Model DN D0 D K g g1 b f f1 Z-Φd DN' D1 k1 g3 g2 b1 f' f1' Z1-Φd1 L L1 H
A48Y-16C
A44Y-16C
A44Y-16P
A44Y-16R 		20 15 105 75 - 55 16 2 - 4-14 25 115 85 - 65 16 2 - 4-14 110 95 411
25 16 115 85 - 65 16 2 - 4-14 32 140 100 - 78 18 2 - 4-18 110 95 411
32 20 140 100 - 78 18 2 - 4-18 40 150 110 - 85 18 3 - 4-18 115 100 411
40 25 150 110 - 85 18 3 - 4-18 50 165 125 - 100 20 3 - 4-18 120 110 472
50 32 165 125 - 100 20 3 - 4-18 65 185 145 - 120 20 3 - 4-18 135 120 532
65 40 185 145 - 120 20 3 - 4-18 80 200 160 - 135 20 3 - 8-18 160 140 556
80 50 200 160 - 135 20 3 - 8-18 100 220 180 - 155 22 3 - 8-18 170 135 561
100 65 220 180 - 155 22 3 - 8-18 125 250 210 - 185 22 3 - 8-18 195 175 667
125 80 250 210 - 185 22 3 - 8-18 150 285 240 - 210 24 3 - 8-23 210 190 857
150 100 285 240 - 210 24 3 - 8-23 175 310 270 - 240 26 3 - 8-23 255 230 915
200 125 340 295 - 265 26 3 - 12-23 250 405 355 - 320 30 3 - 12-26 300 260 1073
250 150 405 355 - 320 30 3 - 12-26 300 460 410 - 375 30 4 - 12-26 350 320 1307
300 220 460 410 - 375 30 4 - 12-26 400 580 525 - 485 36 4 - 16-30 370 350 1233
350 250 520 470 - 435 34 4 - 16-26 500 715 650 - 608 44 4 - 20-34 500 450 1711
400 280 580 525 - 485 36 4 - 16-30 500 715 650 - 608 44 4 - 20-34 500 450 1780
A48Y-25
A44Y-25
A44Y-25P
A44Y-25R 		20 15 105 75 - 55 16 2 - 4-14 25 115 85 - 65 16 2 - 4-14 110 95 411
25 16 115 85 - 65 16 2 - 4-14 32 140 100 - 78 18 2 - 4-18 110 95 411
32 20 140 100 - 78 18 2 - 4-18 40 150 110 - 85 18 3 - 4-18 115 100 411
40 25 150 110 - 85 18 3 - 4-18 50 165 125 - 100 20 3 - 4-18 120 110 472
50 32 165 125 - 100 20 3 - 4-18 65 185 145 - 120 20 3 - 4-18 135 120 532
65 40 185 145 - 120 22 3 - 8-18 80 200 160 - 135 20 3 - 8-18 160 140 556
80 50 200 160 - 135 22 3 - 8-18 100 220 180 - 155 22 3 - 8-18 170 135 561
100 65 230 190 - 160 24 3 - 8-23 125 250 210 - 185 22 3 - 8-18 195 175 667
125 80 270 220 - 188 28 3 - 8-26 150 285 240 - 210 24 3 - 8-23 210 190 857
150 100 300 250 - 218 30 3 - 8-26 175 310 270 - 240 26 3 - 8-23 255 230 915
200 125 360 310 - 278 34 3 - 12-26 250 405 355 - 320 30 3 - 12-26 300 260 1073
250 150 425 370 - 332 36 3 - 12-30 300 460 410 - 375 30 4 - 12-26 350 320 1307
300 220 485 430 - 390 40 4 - 16-36 400 580 525 - 485 36 4 - 16-30 370 350 1233
350 250 555 490 - 448 44 4 - 16-36 500 715 650 - 608 44 4 - 20-34 500 450 1711
400 280 620 550 - 505 48 4 - 16-36 500 715 650 - 608 44 4 - 20-34 500 450 1780
* The content is for reference only. Please contact us for more information.

Model DN D0 D K g g1 b f f1 Z-Φd DN' D1 k1 g3 g2 b1 f' f1' Z1-Φd1 L L1 H
A48Y-40
A44Y-40
A44Y-40P
A44Y-40R 		20 15 105 75 51 55 16 2 4 4-14 25 115 85 - 65 16 16 - 4-14 100 95 411
25 16 115 85 58 65 16 2 4 4-14 32 140 100 - 78 18 18 - 4-18 100 95 411
32 20 140 100 66 78 18 2 4 4-18 40 150 110 - 85 18 18 - 4-18 115 100 411
40 25 150 110 76 85 18 3 4 4-18 50 165 125 - 100 20 20 - 4-18 120 110 472
50 32 165 125 88 100 20 3 4 4-18 65 185 145 - 120 20 20 - 4-18 135 120 532
65 40 185 145 110 120 22 3 4 8-18 80 200 160 - 135 20 20 - 8-18 160 140 556
80 50 200 160 121 135 22 3 4 8-18 100 220 180 - 155 22 22 - 8-18 170 135 561
100 65 235 190 150 160 24 3 4.5 8-23 125 250 210 - 185 22 22 - 8-18 195 175 679
125 80 270 220 176 188 28 3 4.5 8-26 150 285 240 - 210 24 24 - 8-23 210 190 857
150 100 300 250 204 218 30 3 4.5 8-26 200 310 295 - 240 26 26 - 8-23 255 230 915
200 125 375 320 260 282 38 3 4.5 12-30 250 405 355 - 320 30 30 - 12-26 300 260 1073
250 150 450 385 313 345 42 3 4.5 12-34 300 460 410 - 375 30 30 - 12-26 350 320 1307
300 220 515 450 364 408 46 4 4.5 16-34 400 580 525 - 485 36 36 - 16-30 370 350 1233
350 250 580 510 422 465 52 4 5 16-36 500 715 650 - 608 44 44 - 20-34 500 450 1711
400 280 660 585 474 535 58 4 5 16-41 500 715 650 - 608 44 44 - 20-34 500 450 1711
A48Y-64
A44Y-64
A44Y-64P
A44Y-64R 		20 10 125 90 51 68 22 2 4 4-18 25 115 85 58 65 16 16 4 4-14 96 85 297
25 15 140 100 58 78 22 2 4 4-18 32 180 100 66 78 18 18 4 4-18 110 100 310
32 20 155 110 66 82 24 2 4 4-23 40 150 110 76 85 18 18 4 4-18 130 110 322
40 25 170 125 76 95 24 3 4 4-23 50 165 125 88 100 20 20 4 4-18 130 120 352
50 32 180 135 88 105 26 3 4 4-23 65 185 145 110 120 22 22 4 8-18 135 130 425
65 40 205 160 110 130 28 3 4 8-23 80 200 160 121 135 22 22 4 8-18 175 160 570
80 50 215 170 121 140 30 3 4 8-23 100 235 190 150 160 24 24 4.5 8-23 175 160 560
100 65 250 200 150 168 32 3 4.5 8-26 125 270 220 176 188 28 28 4.5 8-25 195 195 690
150 100 345 280 204 240 38 3 4.5 8-34 200 375 320 260 282 38 38 4.5 12-30 280 265 935
A48Y-100
A44Y-100
A44Y-100P
A44Y-100R 		20 10 125 90 51 68 22 2 4 4-18 25 115 85 58 65 16 16 4 4-14 96 85 297
25 16 140 100 58 78 24 2 4 4-18 32 140 100 66 78 18 18 4 4-18 110 100 310
32 20 155 110 66 82 24 2 4 4-23 40 150 110 76 85 18 18 4 4-18 130 110 322
40 25 170 125 76 95 26 3 4 4-23 50 165 125 88 100 20 20 4 4-18 130 120 352
50 32 195 145 88 112 28 3 4 4-26 65 185 145 110 120 22 22 4 8-18 135 130 425
65 32 220 170 110 138 32 3 4 8-26 80 200 160 121 135 22 22 4 8-18 175 160 570
80 40 230 180 121 148 34 3 4 8-26 100 235 190 150 160 24 24 4.5 8-23 175 160 560
100 50 265 210 150 172 38 3 4.5 8-30 125 270 220 176 188 28 28 4.5 8-25 195 195 690
150 80 355 290 204 250 46 3 4.5 12-34 200 375 320 260 282 38 38 4.5 12-30 280 265 935
* The content is for reference only. Please contact us for more information.

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