Single Lever Safety Valve, Carbon Steel / Cr Mo V Steel
Applications
GA42H type safety valve is applicable to the power-station boiler and pressure container (The working temperature is 450℃ or less.), Which will avoid the pressure rate belong the allowed upper limit. The medium can be steam or air.

GA42H-16C/25/40/64/100
Materials for main parts
No. | Name of part | Materials |
1 | Body | Carbon steel |
2 | Guide sleeve | Stainless steel |
3 | Disc | 2Cr13 |
4 | Stem | 2Cr13 |
5 | Lever | Carbon steel |
6 | Hammer | Cast iron |
Dimensions (mm)
Type | Nominal Diameter DN (mm) | Dimension (mm) | |||||||||||||||||||
do-z | D | D1 | D2 | D6 | f | f1 | b | Z-¢d | L | H | Outlet Flanged | Outlet Socket | |||||||||
DN’ | D2’ | D1’ | D’ | n-M | d1 | K2 | K3 | D3 | |||||||||||||
GA42H-16 | 50 | 40×1 | 165 | 125 | 100 | / | 3 | / | 16 | 4-18 | 840 | 412 | 125 | 175 | 200 | 235 | 8-M16 | 120 | 145 | 162 | 190 |
GA42H-25 | 50 | 40×1 | 165 | 125 | 100 | / | 3 | / | 20 | 4-18 | 840 | 412 | 125 | 175 | 200 | 235 | 8-M16 | 120 | 145 | 162 | 190 |
GA42H-40 | 50 | 40×1 | 165 | 125 | 100 | 88 | 3 | 4 | 20 | 4-18 | 840 | 412 | 125 | 175 | 200 | 235 | 8-M16 | 120 | 145 | 162 | 190 |
GA42H-64 | 50 | 40×1 | 175 | 135 | 105 | 88 | 3 | 4 | 26 | 4-23 | 840 | 420 | 125 | 175 | 200 | 235 | 8-M16 | 120 | 145 | 162 | 190 |
GA42H-100 | 50 | 40×1 | 195 | 145 | 112 | 88 | 3 | 4 | 28 | 4-25 | 840 | 420 | 125 | 175 | 200 | 235 | 8-M16 | 120 | 145 | 162 | 190 |
Dual-lever safety valve

GA44H-16C/25/40/64
Applications
GA44H type safety valve is apply-cable to the power-station boiler and pressure container (The working tem-premature is 450℃ or less.), Which will avoid the pressure rate beyond the al-rowed upper limit. The medium can be steam or air.
Explanation of the materials for main parts
For the materials of main parts GA44H lever safety valve are just same as GA42H-16C/25/40 lever safety valve.
Dimensions (mm)
Type | Nominal Diameter DN (mm) | Dimension (mm) | |||||||||||||||||||||
do-z | D | D1 | D2 | D6 | f | f1 | b | Z-¢d | H | L | Outlet Socket | Outlet Flanged | |||||||||||
d1 | K2 | K3 | D3 | DN′ | D2′ | D1′ | D’ | b’ | f’ | Z-¢d1 | |||||||||||||
GA44H-1.6 | 80 | 50×2 | 200 | 160 | 135 | / | 3 | / | 20 | 8-18 | 410 | 840 | 120 | 145 | 162 | 190 | 150 | 210 | 240 | 280 | 24 | 3 | 8-23 |
GA44H-2.5 | 80 | 50×2 | 200 | 160 | 135 | / | 3 | / | 22 | 8-18 | 410 | 840 | 120 | 145 | 162 | 190 | 150 | 210 | 240 | 280 | 24 | 3 | 8-23 |
GA44H-4.0 | 80 | 50×2 | 200 | 160 | 135 | 121 | 3 | 4 | 22 | 8-18 | 410 | 840 | 120 | 145 | 162 | 190 | 150 | 210 | 240 | 280 | 24 | 3 | 8-23 |
GA44H-6.4 | 80 | 50×2 | 200 | 170 | 140 | 121 | 3 | 4 | 30 | 8-23 | 480 | 840 | 200 | 218 | 253 | 285 | 200 | 255 | 280 | 315 | 22 | 3 | 8-18 |
Single-lever safety valve

GA41H,GA51H-16C/25/40
Applications
GA41H, A51H type safety valve is applicable to the boiler and pressure contain-err (The working temperature is 450℃ or less.), Which will avoid the pressure rate beyond the allowed upper limit. The medic-um can be steam or air.
Explanation of the materials for main parts
GA41H, A51H type safety valve, except the lever (material is carbon steel), hammer (material is cast iron), the materials of other parts is the same as A41H-16C spring load type safety valve.
Dimension (mm)
Nominal Diameter DN (mm) | Dimension (mm) | |||||||||||||||
do | L | L1 | D | K | g1 | f | b | z-¢d | DN’ | D1 | K1 | g2 | b1 | f’ | z-¢d1 | |
25 | 20 | 100 | 85 | 115 | 85 | 65 | 22 | 16 | 4-14 | 25 | 115 | 85 | 65 | 16 | 2 | 4-14 |
32 | 25 | 115 | 100 | 140 | 100 | 78 | 3 | 18 | 4-18 | 32 | 140 | 100 | 78 | 18 | 2 | 4-18 |
40 | 32 | 120 | 110 | 150 | 110 | 85 | 3 | 18 | 4-18 | 40 | 150 | 110 | 85 | 18 | 3 | 4-18 |
50 | 40 | 135 | 120 | 165 | 125 | 100 | 3 | 20 | 4-18 | 50 | 165 | 125 | 100 | 20 | 3 | 4-18 |
80 | 65 | 160 | 135 | 200 | 160 | 135 | 3 | 20 | 8-18 | 80 | 200 | 160 | 135 | 20 | 3 | 8-18 |
100 | 80 | 170 | 160 | 220 | 180 | 155 | 3 | 22 | 8-18 | 100 | 220 | 180 | 155 | 22 | 3 | 8-18 |
150 | 125 | 205 | 195 | 285 | 240 | 210 | 3 | 24 | 8-23 | 150 | 285 | 240 | 210 | 24 | 3 | 8-23 |
200 | 150 | 240 | 230 | 340 | 295 | 265 | 3 | 26 | 12-23 | 200 | 340 | 295 | 265 | 26 | 3 | 12-23 |
Middle temperature and pressure impulse safety device (H series)
Performance criterion
Nominal Pressure (Mpa) | Nominal Diameter (mm) | Test pressure | Max. Working Pressure (MPa) | Max. Working Temperature (℃) | Weight (Kg) | |
Strength | Seal | |||||
10.0 | 150 | 15.0 | 4.0 | 4.0 | ≤450 ≤540 | 202 |
Main part material
1.Main safety valve
Name of Parts
Material | 1 | 2 | 3
| 4 | 5 | 6 | 7 |
Body | Disc | Stem | Seat | Spring | Bonnet | Piston | |
A49Y-10 | Carbon Steel | Carbon Steel | Nit riding Steel | Carbon Steel | Spring Steel | Carbon Steel | Stainless Steel |
A49Y-10V | Cr Mo V Steel | Cr Mo V Steel | Nit riding Steel | Cr Mo V Steel | Spring Steel | Cr Mo V Steel | Stainless Steel |


Impulse safety valve
Part number | Name of parts | Material | |
A49Y-10 | A49Y-10V | ||
1 | Body | Carbon steel | Cr Mo V steel |
2 | Bonnet | Carbon steel | Cr Mo V steel |
3 | Disc | Stainless steel | Cr Mo V steel |
4 | Stem | Stainless steel | Stainless steel |
5 | Guide sleeve | Stainless steel | Stainless steel |
Weight | 73.6 | ||
Shinjo Company is a high tech enterprise specialized in producing various industrial valves. Shinjo strive on providing full package of industrial valve solution to client, focus on industrial valve manufacture, development, sales and services.
WeChat
WhatsApp