Pilot Operated Safety Valve

Pilot operated safety valve applications

Pilot operated safety valve, newly-structured, is mainly applied to such trades as petroleum & natural gas, chemistry, electric, metallurgy & burning gas. It is the best super-pressure protecting equipment on press equipment, container, or pipeline. It is mainly characterized by shifting direct function of spring to indirect function of guide valve. What's more, main valve, applying for sleeve piston & double sealed seat, is characterized by high precision of action, good recycling function, fast turning back to seat, ability to high-pressure leaking, long working time & security, together with readjustment on line, automatic turning back to seat after leaking again and again, tight closure, operating and maintaining convenience.

Pilot operated safety valve brief figure of structure

 Pilot Operated Safety Valve

Pilot operated safety valve materials for main parts


No.
Name of part Ax46Y/F AF46Y/F Material KAX46Y/F Material
1 Body WCB WCB
2 Disc 2Cr13/2Cr13+PTFE 1Cr18Ni9Ti/1Cr18Ni9Ti+PTFE
3 Guide 1Cr18Ni9Ti 1Cr18Ni9Ti
4 Spring 50CrVA 50CrVA
5 O type ring Vinton Vinton
6 Bonnet 25 25
7 Pilot valve Part

Pilot operated safety valve dimensions (mm)


Type
DN do L L1 L2 H DN& D D1 D2 D6 b z-&d D& D1& D2& D6& b& Z&-&d&
(K)Ax46F/Y-16
AF46Y-16
25 15 110 95 150 365 32 115 85 65   16 4-18 140 100 78   18 4-18
32 20 115 100 150 375 40 140 100 78   18 4-18 150 110 85   18 4-18
40 25 120 110 160 390 50 150 110 85   18 4-18 165 125 100   20 4-18
50 32 135 120 160 410 65 165 125 100   20 4-18 185 145 120   20 4-18
65 40 160 140 175 435 80 185 145 120   20 4-18 200 160 135   20 8-18
80 50 170 135 175 451 100 200 160 135   20 8-18 220 180 155   22 8-18
100 65 195 175 195 500 125 220 180 155   22 8-18 250 210 185   24 8-18
125 80 210 190 220 526 150 250 210 185   22 8-18 285 240 210   24 8-23
150 100 255 230 265 623 175 285 240 210   24 8-23 315 270 240   26 8-23
200 125 300 260 300 690 250 340 295 265   26 12-23 405 355 320   30 12-26
(K)Ax46F/Y-25
AF46Y-25
25 15 110 95 150 365 32 115 85 65   16 4-14 140 100 78   18 4-18
32 20 115 100 150 375 40 140 100 78   18 4-18 150 110 85   18 4-18
40 25 120 110 160 390 50 150 110 85   18 4-18 165 125 100   20 4-18
50 32 135 120 160 410 65 165 125 100   20 4-18 185 145 120   20 4-18
65 40 160 140 175 435 80 185 145 120   22 8-18 200 160 135   20 8-18
80 50 170 135 175 451 100 200 160 135   22 8-18 220 180 155   22 8-18
100 65 195 175 195 500 125 230 190 160   24 8-23 250 210 185   22 8-18
125 80 210 190 220 526 150 270 220 188   28 8-26 285 240 210   24 8-23
150 100 255 230 265 623 175 300 250 218   30 8-26 310 270 240   26 8-23
200 125 300 260 300 690 250 360 310 278   34 12-26 405 355 320   30 12-26
(K)Ax46F/Y-40
AF46Y-40
25 15 110 95 150 365 32 115 85 65 58 16 4-14 140 100 78   18 4-18
32 20 115 100 150 375 40 140 100 78 66 18 4-18 150 110 85   18 4-18
40 25 120 110 160 390 50 150 110 85 76 18 4-18 165 125 100   20 4-18
50 32 135 120 160 410 65 165 125 100 88 20 4-18 185 145 120   20 4-18
65 40 160 140 175 435 80 185 145 120 110 22 8-18 200 160 135   20 8-18
80 50 170 135 175 451 100 200 160 135 121 22 8-18 220 180 155   22 8-18
100 65 195 175 195 500 125 235 190 160 150 24 8-23 250 210 185   22 8-18
125 80 210 190 220 526 150 270 220 188 176 28 8-26 285 240 210   24 8-23
150 100 255 230 265 623 175 300 250 218 204 30 8-26 310 270 240   26 8-23
200 125 300 260 300 690 250 375 320 282 260 38 12-30 405 355 320   30 12-26
(K)Ax46F/Y-64
AF46Y-64
25 15 110 100 160 365 32 140 100 78 58 22 4-18 140 100 78 66 18 4-18
32 20 130 110 160 375 40 155 110 82 66 24 4-23 150 110 85 76 18 4-18
40 25 130 120 170 445 50 170 125 95 76 24 4-23 165 125 100 88 20 4-18
50 32 135 130 195 460 65 180 135 105 88 26 4-23 185 145 120 110 22 8-18
65 40 175 160 225 495 80 205 160 130 110 28 8-23 200 160 135 121 22 8-18
80 50 175 160 225 525 100 215 170 140 121 30 8-23 235 190 160 150 24 8-23
100 65 195 195 245 565 125 250 200 165 150 32 8-26 270 220 188 176 28 8-25
150 100 280 265 265 610 200 345 280 240 204 38 8-34 375 320 282 260 38 12-30
200 125 300 295 300 680 250 405 345 300 260 44 12-34 450 385 345 313 42 12-34
(K)Ax46F/Y-100
AF46Y-100
25 15 110 100 160 365 32 140 100 78 58 24 4-18 140 100 78 66 18 4-18
32 20 130 110 160 375 40 155 110 82 66 24 4-23 150 110 85 76 18 4-18
40 25 130 120 170 445 50 170 125 95 76 26 4-23 165 125 100 88 20 4-18
50 32 135 130 195 460 65 195 145 112 88 28 4-26 185 145 120 110 22 8-18
65 40 175 160 225 495 80 220 170 138 110 32 8-26 200 160 135 121 22 8-18
80 50 175 160 225 525 100 230 180 148 121 34 8-26 235 190 160 150 24 8-23
100 65 195 195 2475 565 125 265 210 172 150 38 8-30 270 220 188 176 28 8-25
150 100 280 265 265 610 200 355 290 250 204 46 12-34 375 320 282 260 38 12-30
200 125 300 295 300 680 250 430 360 312 260 54 12-41 450 385 345 313 42 12-34

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