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Location：PRODUCTS >> Safety valve >> With wrench spring micro-Kai safety valve
With wrench spring micro-Kai safety valve
Model: A47H-16C
Nominal diameter: DN20 ~ 300mm
Nominal: PN1.6 ~ 10.0MPa
Operating temperature: ≤300 ℃
Body material: steel, forged steel, stainless steel
air, LPG and liquid: Medium
Applications : Suitable for chemical, petrochemical, petroleum, papermaking, mining, electricity, liquefied petroleum gas, food, pharmaceutical, water supply and drainage, municipal, mechanical equipment, electronics, urban construction and other fields

A47H type with a wrench spring micro -type safety valve structure brief
 1, spring micro-type safety valve with a simple structure, good sealing performance, the opening pressure is accurate, discharge capacity, back to the seat pressure is small, easy to adjust and so on. 
 2, nozzle-type valve seat: seat for the seat nozzle valve seat, the steam flow through the seat outlet to reach the speed of sound, the discharge coefficient, seat sealing surface surfacing Cobalt chrome tungsten carbide wear-resistant impact Erosion, long life. 
 3, Thermo-elastic disc: The disc is designed as a thermo-elastic structure, using its slight deformation under medium pressure to improve the sealing ability and overcome the pre-vent phenomenon when the safety valve approaches the setting pressure under medium pressure. Valve sealing surface using advanced laser quenching technology to improve the hardness, wear resistance, impact resistance. 
 4, adjusting nut: By adjusting the adjusting nut, adjust the amount of spring compression, so that the valve can be very convenient, very quickly get accurate setting pressure. 
 5, back pressure adjustment sets: adjust valve back pressure auxiliary agencies, through the back pressure adjustment sleeve adjustment, access to the appropriate back seat pressure. Increase the valve back pressure to reduce. Lower the valve back pressure.
 

A47H type with a wrench spring-type safety valve installation instructions
 1, the safety valve must be mounted vertically, and the best direct installation in the container or pipe joints. Connector diameter should not be less than the safety valve inlet diameter. 
 2, the safety valve outlet must be fitted with appropriate expansion joints to prevent the thermal expansion of the discharge pipe to the safety valve to bring undue thermal stress. The discharge pipe diameter should be larger than the valve outlet diameter, the length as short as possible to avoid turning. The discharge pipe and expansion joint weight should not act on the safety valve, should be fixed in the building. The distance between the centerline of the discharge pipe and the centerline of the valve body should be as short as possible. For each safety valve should be installed separately discharge pipe. 
 3, muffler exit to have enough area to prevent back pressure affect the discharge capacity of the valve.
 

A47H type wrench spring micro - Kai safety valve main parts and materials

NO.

Part Name

material

1

Body

WCB

2

Seat

ZG2Cr13

3

Adjustment ring

ZG2Cr13

4

Disc

2Cr13

5

Guide sleeve

2Cr13

6

cap

ZG230-450

7

spring

50CrVA

8

Valve stem

2Cr13

9

wrench

ZG200-400

10

Adjust the screw

45

11

Protective cover

ZG200-400

 

Sealing surface material

"H" surfacing D507, "Y" surfacing Co-based cemented carbide


 A47H -type spring with a wrench spring-type safety valve main dimensions

model Nominal diameter do D K g g1 b f f1 Z-? D DN D1 K1 g2 g b1 f f1 Z1-d1 L L1 ≈H
A47H-16C 20 15 105 75 / 55 16 2 / 4-14 20 105 75 55 / 16 2 / 4-14 100 85 270
25 20 115 85 / 65 16 2 / 4-14 25 115 85 65 / 16 2 / 4-14 100 85 270
32 25 140 100 / 78 18 2 / 4-18 32 140 100 78 / 18 2 / 4-18 115 100 312
40 32 150 110 / 85 18 3 / 4-18 40 150 110 85 / 18 3 / 4-18 120 110 320
50 40 165 125 / 100 20 3 / 4-18 50 165 125 100 / 20 3 / 4-18 135 120 390
65 50 185 145 / 120 20 3 / 4-18 65 185 145 120 / 20 3 / 4-18 140 130 395
80 65 200 160 / 135 20 3 / 8-18 80 200 160 135 / 20 3 / 8-18 160 135 400
100 80 220 180 / 155 22 3 / 8-18 100 220 180 155 / 22 3 / 8-18 170 160 600
125 100 250 210 / 185 22 3 / 8-18 125 250 210 185 / 22 3 / 8-18 190 190 620
150 125 285 240 / 210 24 3 / 8-23 150 285 240 210 / 24 3 / 8-23 205 195 625
200 150 340 295 / 265 26 3 / 12-23 200 340 295 265 / 26 3 / 12-23 240 230 798
250 200 405 355 / 320 30 3 / 12-26 250 405 355 320 / 30 3 / 12-26 350 320 981
300 250 460 410 / 375 30 4 / 12-26 300 460 410 375 / 30 4 / 12-26 350 320 1005
A47H-25 20 15 105 75 / 55 16 2 / 4-14 20 105 75 55 / 16 2 / 4-14 100 85 270
25 20 115 85 / 65 16 2 / 4-14 25 115 85 65 / 16 2 / 4-14 100 85 270
32 25 140 100 / 78 18 2 / 4-18 32 140 100 78 / 18 2 / 4-18 115 100 312
40 32 150 110 / 85 18 3 / 4-18 40 150 110 85 / 18 3 / 4-18 120 110 320
50 40 165 125 / 100 20 3 / 4-18 50 165 125 100 / 20 3 / 4-18 135 120 390
65 50 185 145 / 120 22 3 / 8-18 65 185 145 120 / 20 3 / 4-18 140 130 395
80 65 200 160 / 135 24 3 / 8-18 80 200 160 135 / 20 3 / 8-18 160 135 400
100 80 230 190 / 160 24 3 / 8-23 100 220 180 155 / 20 3 / 8-18 170 160 600
125 100 270 220 / 188 28 3 / 8-26 125 250 210 185 / 22 3 / 8-18 190 190 620
150 125 300 250 / 218 30 3 / 8-26 150 285 240 210 / 24 3 / 8-23 205 195 625
200 150 360 310 / 278 34 3 / 12-26 200 340 295 265 / 26 3 / 12-23 240 230 798
250 200 425 370 / 332 36 3 / 12-30 250 405 355 320 / 30 3 / 12-26 350 320 981
300 250 485 430 / 390 40 4 / 16-30 300 460 410 375 / 30 4 / 12-26 350 320 1005
A47H-40 20 15 105 75 51 55 16 2 4 4-14 20 105 75 55 / 16 2 / 4-14 100 85 270
25 20 115 85 58 65 16 2 4 4-14 25 115 85 65 / 16 2 / 4-14 100 85 270
32 25 140 100 66 78 18 2 4 4-18 32 140 100 78 / 18 2 / 4-18 115 100 312
40 32 150 110 76 85 18 3 4 4-18 40 150 110 85 / 18 3 / 4-18 120 110 320
50 40 165 125 88 100 20 3 4 4-18 50 165 125 100 / 20 3 / 4-18 135 120 390
65 50 185 145 110 120 22 3 4 8-18 65 185 145 120 / 20 3 / 4-18 140 130 395
80 65 200 160 121 135 22 3 4 8-18 80 200 160 135 / 20 3 / 8-18 160 135 400
100 80 235 190 150 160 24 3 4.5 8-23 100 220 180 155 / 22 3 / 8-18 170 160 600
125 100 270 220 176 188 28 3 4.5 8-26 125 250 210 185 / 22 3 / 8-18 190 190 620
150 125 300 250 204 218 30 3 4.5 8-26 150 285 240 210 / 24 3 / 8-23 205 195 625
200 150 375 320 260 282 38 3 4.5 12-30 200 340 295 265 / 26 3 / 12-23 240 230 798
250 200 450 385 313 345 42 3 4.5 12-34 250 405 355 320 / 30 3 / 12-26 350 320 981
300 250 515 450 364 408 46 4 4.5 16-34 300 460 410 375 / 30 4 / 12-26 350 320 1005
A47H-64
A47Y-64 		20 15 130 90 51 68 20 2 4 4-18 20 105 75 55 51 16 2 4 4-14 100 95 301
25 20 140 100 58 78 22 2 4 4-18 25 115 85 65 58 16 2 4 4-14 100 95 301
32 25 155 110 66 82 24 2 4 4-23 32 140 100 78 66 18 2 4 4-18 115 105 312
40 32 170 125 76 95 24 3 4 4-23 40 150 110 85 76 18 3 4 4-18 135 115 366
50 40 180 135 88 105 26 3 4 4-23 50 165 125 100 88 20 3 4 4-18 160 125 396
65 50 205 160 110 130 28 3 4 8-23 65 185 145 120 110 22 3 4 8-18 175 160 570
80 65 215 170 121 140 30 3 4 8-23 80 200 160 135 121 22 3 4 8-18 175 160 565
100 80 250 200 150 168 32 3 4.5 8-26 100 235 190 160 150 24 3 4.5 8-23 190 180 597
150 100 345 280 204 240 38 3 4.5 8-34 150 300 250 218 204 30 3 4.5 8-26 280 260 738
A47H-100
A47Y-100 		20 15 130 90 51 68 22 2 4 4-18 20 105 75 55 51 16 2 4 4-14 100 95 301
25 20 140 100 58 78 24 2 4 4-18 25 115 85 65 58 16 2 4 4-14 100 95 301
32 25 155 110 66 82 24 2 4 4-23 32 140 100 78 66 18 2 4 4-18 115 105 312
40 32 170 125 76 95 26 3 4 4-23 40 150 110 85 76 18 3 4 4-18 135 115 366
50 40 195 145 88 112 28 3 4 4-26 50 165 125 100 88 20 3 4 4-18 160 125 396
65 50 220 170 110 138 32 3 4 8-26 65 185 145 120 110 22 3 4 8-18 175 160 570
80 65 230 180 121 148 34 3 4 8-26 80 200 160 135 121 22 3 4 8-18 175 160 565
100 80 265 210 150 172 38 3 4.5 8-30 100 235 190 160 150 24 3 4.5 8-23 190 180 597
150 100 355 290 204 250 46 3 4.5 12-34 150 300 250 218 204 30 3 4.5 8-26 280 260 738
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