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Enclosed spring-loaded full-opening safety valves
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Enclosed spring-loaded full-opening safety valves

Product Overview

Series

A42Y-16C, A42Y-16P, A42Y-16R, KA42Y-16, DA42Y-16C(P), A42Y-25, A42Y-25P, A42Y-25R, KA42Y-25(P), DA42Y-25(P), A42Y-40, A42Y-40P, A42Y-40R, KA42Y A42Y-40, A42Y-40(P), A42Y-64, A42Y-64P, A42Y-64R, KA42Y-64, DA42Y-64(P), A42Y-100, A42Y-100P, A42Y-100R, KA42Y-100, DA42Y-100(P).


Application

A42Y-C type is suitable for the equipment and pipeline of air, petroleum gas, liquid and other media with the working temperature ≤ 300°C. A42Y-P and A42Y-R types are suitable for the equipment and pipeline with the working temperature ≤ 200°C and corrosive temperature.
A42Y-P type and A42Y-R type are suitable for equipment or pipeline with corrosive medium at working temperature ≤ 200℃ as overpressure protection device.
Connection flange standard according to JB/T..... .94 series 1. ≥ 6.4MPa according to JB/T..... JB/T .94 series 2.

Specifications

Main parts and materials
No. Parts Name A42-C/KA42Y-C Materials A42H-P/KA42Y-P A42Y-R Materials DA42Y-P Materials
1 Valve Seat 2Cr13/1Cr18Ni9Ti ZG1Cr18Ni9Ti ZG1Cr18Nil2Mo2Ti ZG1Cr18Ni9Ti
2 Valve body WCB ZG1Cr18Ni9Ti ZG1Cr18Ni12Mo2Ti LCB/ZG1Cr18Ni9Ti
3 Adjustment ring 2Cr13/1Cr18Ni9Ti 1Cr18Ni9Ti 1Cr18Ni12Mo2Ti 1Cr18Ni9Ti
4 反冲盘 2Cr13/1Cr18Ni9Ti 1Cr18Ni9Ti 1Cr18Ni12Mo2Ti 1Cr18Ni9Ti
5 Valve 2Cr13/1Cr18Ni9Ti 1Cr18Ni9Ti 1Cr18Ni12Mo2Ti 1Cr18Ni9Ti
6 Guide sleeve 2Cr13/1Cr18Ni9Ti 1Cr18Ni9Ti 1Cr18Ni12Mo2Ti 1Cr18Ni9Ti
7 Valve cover ZG230-450 ZG1Cr18Ni9Ti ZG1Cr18Ni12Mo2Ti ZG1Cr18Ni9Ti
8 Spring SOCrVA 50CrVA coated fluoroplastic 50CrVA coated fluoroplastic 500CrVA
9 Valve stem 2Cr13 1Cr18Ni9Ti/1Cr18N- 1Cr18Ni9Ti/lCr18N- 1Cr18Ni9Ti
i12Mo2Ti i12Mo2Ti
10 Adjusting screw 45 2Cr13 2Cr13 2Cr13
11 Protective cover ZG200-400 ZG1Cr18Ni9Ti ZG1Cr18Ni12Mo2Ti ZG1Cr18Ni9Ti
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
A42Y-16C
A42Y-16P
A42Y-16R
KA42Y-16C
DA42Y-16C
(P) 		20 15 105 75 - 55 16 2 - 4-14 25 115 85 - 65 16 2 - 4-14 110 95 378
25 16 115 85 - 65 16 2 - 4-14 32 140 100 - 78 18 2 - 4-18 110 95 378
32 20 140 100 - 78 18 2 - 4-18 40 150 110 - 85 18 3 - 4-18 115 100 378
40 25 150 110 - 85 18 3 - 4-18 50 165 125 - 100 20 3 - 4-18 120 110 406
50 32 165 125 - 100 20 3 - 4-18 65 185 145 - 120 20 3 - 4-18 135 120 450
65 40 185 145 - 120 20 3 - 4-18 80 200 160 - 135 20 3 - 8-18 160 140 520
80 50 200 160 - 135 20 3 - 8-18 100 220 180 - 155 22 3 - 8-18 170 135 525
100 65 220 180 - 155 22 3 - 8-18 125 250 210 - 185 22 3 - 8-18 195 175 690
125 80 250 210 - 185 22 3 - 8-18 150 285 240 - 210 24 3 - 8-23 210 190 780
150 100 285 240 - 210 24 3 - 8-23 175 310 270 - 240 26 3 - 8-23 255 230 838
200 125 340 295 - 265 26 3 - 12-23 250 405 355 - 320 30 3 - 12-26 300 260 992
250 150 405 355 - 320 30 3 - 12-26 300 460 410 - 375 30 4 - 12-26 350 320 1266
300 220 460 410 - 375 30 4 - 12-26 400 580 525 - 485 36 4 - 16-30 370 350 1283
350 250 520 470 435 34 4 - 16-26 500 715 650 - 608 44 4 - 20-34 500 450 1520
400 280 580 525 485 36 4 - 16-30 500 715 650 - 608 44 4 - 20-34 500 450 1530
A42Y25C
A42Y-25P
A42Y-25R
KA42Y-25C
DA42Y-25(P) 		20 15 105 75 - 55 16 2 - 4-14 25 115 85 - 65 16 2 - 4-14 110 95 378
25 16 115 85 - 65 16 2 - 4-14 32 140 100 - 78 18 2 - 4-18 110 95 378
32 20 140 100 - 78 18 2 - 4-18 40 150 110 - 85 18 3 - 4-18 115 100 378
40 25 150 110 - 85 18 3 - 4-18 50 165 125 - 100 20 3 - 4-18 120 110 406
50 32 165 125 - 100 20 3 - 4-18 65 185 145 - 120 20 3 - 4-18 135 120 450
65 40 185 145 - 120 22 3 - 8-18 80 200 160 - 135 20 3 - 8-18 160 140 520
80 50 200 160 - 135 24 3 - 8-18 100 220 180 - 155 22 3 - 8-18 170 135 525
100 65 230 190 - 160 24 3 - 8-23 125 250 210 - 185 22 3 - 8-18 195 175 690
125 80 270 220 - 188 28 3 - 8-26 150 285 240 - 210 24 3 - 8-23 210 190 780
150 100 300 250 - 218 30 3 - 8-26 175 310 270 - 240 26 3 - 8-23 255 230 838
200 125 360 310 - 278 34 3 - 12-26 250 405 355 - 320 30 3 - 12-26 300 260 992
250 150 425 370 - 332 36 3 - 12-30 300 460 410 - 375 30 4 - 12-26 350 320 1266
300 220 485 430 - 390 40 4 - 16-30 400 580 525 - 485 36 4 - 16-30 370 350 1283
A42Y-40
A42Y-40P
A42Y-40R
KA42Y-40
DA42Y-40P 		20 15 105 75 51 55 16 2 4 4-14 25 115 85 - 65 16 2 - 4-14 100 95 378
25 16 115 85 58 65 16 2 4 4-14 32 140 100 - 78 18 2 - 4-18 100 95 378
32 20 140 100 66 78 18 2 4 4-18 40 150 110 - 85 18 3 - 4-18 115 100 378
40 25 150 110 76 85 18 3 4 4-18 50 165 125 - 100 20 3 - 4-18 120 110 406
50 32 165 125 88 100 20 3 4 4-18 65 185 145 - 120 20 3 - 4-18 135 120 450
65 40 185 145 110 120 22 3 4 8-18 80 200 160 - 135 20 3 - 8-18 160 140 520
80 50 200 160 121 135 22 3 4 8-18 100 220 180 - 155 22 3 - 8-18 170 135 525
100 65 235 190 150 160 24 3 4.5 8-23 125 250 210 - 185 22 3 - 8-18 195 175 690
125 80 270 220 176 188 28 3 4.5 8-26 150 285 240 - 210 24 3 - 8-23 210 190 780
150 100 300 250 204 218 30 3 4.5 8-26 200 340 295 - 240 26 3 - 8-23 255 230 838
200 125 375 320 260 282 38 3 4.5 12-30 250 405 355 - 320 30 3 - 12-26 300 260 992
250 150 450 385 313 345 42 3 4.5 12-34 300 460 410 - 375 30 4 - 12-26 350 320 1266
* 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
A42Y-64
A42Y-64P
A42Y-64R
DA42Y-64(P) 		20 10 125 90 51 68 22 2 4 4-18 25 115 85 58 65 16 2 4 4-14 96 85 264
25 15 140 100 58 78 22 2 4 4-18 32 180 100 66 78 18 2 4 4-18 110 100 277
32 20 155 110 66 82 24 2 4 4-23 40 150 110 76 85 18 2 4 4-18 130 110 289
40 25 170 125 76 95 24 3 4 4-23 50 165 125 88 100 20 3 4 4-18 130 120 319
50 32 180 135 88 105 26 3 4 4-23 65 185 145 110 120 22 3 4 8-18 135 130 389
65 40 205 160 110 130 28 3 4 8-23 80 200 160 121 135 22 3 4 8-18 175 160 493
80 50 215 170 121 140 30 3 4 8-23 100 235 190 150 160 24 3 4.5 8-23 175 160 483
100 65 250 200 150 168 32 3 4.5 8-26 125 270 220 176 188 28 3 4.5 8-25 195 195 613
150 100 345 280 204 240 38 3 4.5 8-34 200 375 320 260 282 38 3 4.5 12-30 280 265 894
A42Y-100
A42Y-100P
A42Y-100R
DA42Y-100(P) 		20 10 125 90 51 68 22 2 4 4-18 25 115 85 58 65 16 2 4 4-14 96 85 264
25 16 140 100 58 78 24 2 4 4-18 32 140 100 66 78 18 2 4 4-18 110 100 277
32 20 155 110 66 82 24 2 4 4-23 40 150 110 76 85 18 2 4 4-18 130 110 289
40 25 170 125 76 95 26 3 4 4-23 50 165 125 88 100 20 3 4 4-18 130 120 319
50 32 195 145 88 112 28 3 4 4-26 65 185 145 110 120 22 3 4 8-18 135 130 389
65 32 220 170 110 138 32 3 4 8-26 80 200 160 121 135 22 3 4 8-18 175 160 493
80 40 230 180 121 148 34 3 4 8-26 100 235 190 150 160 24 3 4-5 8-23 175 160 483
100 50 265 210 150 172 38 3 4.5 8-30 125 270 220 176 188 28 3 4.5 8-25 195 195 613
150 80 355 290 204 250 46 3 4.5 12-34 200 375 320 260 282 38 3 4.5 12-30 280 265 894
* The content is for reference only. Please contact us for more information.

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