Bellow Valves Quality Control
The core theme of VMV is closely connected to Valve (Valve), doing
our best (Max), helping customers succeed (Victory). Whenever and
wherever special fluids need to be transported, controlled or shut
down, the global customers rely on our expert ise and products. VMV
is committed to provide customers with the best advice, superior
quality, highest reliability,as well as the reliable service.
Make security eternal. Welcome to VMV
Quality Control
- The test items of bellows sealed valves meet the requirements of different working conditions
- For the following general tests, VMV products have been tested in accordance with the specificat ons at the factory
- Users can make special tests and other tests according to the actual working condions
Bellows Valve Check Items
| General Detecon | Inspecon Items | General Detecon |
| Material Inspecon | According To Relevant Material Standards | |
| Visual Inspecon | MSS SP-55,JB/T 7927-2014 | |
| Dimension Inspecon | Machining Drawing File | |
| Pressure Test | API598,EN12266 | |
| Air Tightness Test | API598,EN12266 | |
| Valve Seat Leakage Check | API598,EN12266 | |
| Funconal Check | API598,EN12266 | |
| Bellows Leakage Check | API598,EN12266 |
| Special Detecon lt | Test Items | Standard Specificaon |
| RT Radiography | ASME | |
| PT Liquid Penetraon Test | ASME | |
| UT Ultrasonic Inspecon | ASME | |
| Low Leakage Detecon | ISO15848 |
Common Subject Material Comparison Table
| ASTM Casng | DIN/EN Casng | ASTM Forging | JIS Casng |
| A216 WCB | 1.0619/GS-C25 | ASTM A105 | G5151 SCPH2 |
| A536 60-40-80 | JS1049/GGG40 | – | G5502 FCD400-15 |
| A352 LCB | 1.1131/G17Mn5 | A350 LF2 | G5152 SCPL1 |
| A217 WC6 | 1.7357/G17CrMo5-5 | A182 F11 | – |
| A217 WC9 | 1.7379/G17CrMo9-10 | A182 F22 | G5151 SCPH-32 |
| A351 CF8 | 1.4308/GX5CrNi19-10 | A182 F304 | G5151 SCS13A |
| A351 CF3 | 1.4309/GX2CrNi19-11 | A182 F304L | G5151 SCS19A |
| A351 CF8M | 1.4408/GX5CrNiMo19-11-2 | A182 F316 | G5151 SCS14A |
| A351 CF3M | 1.4409/GX2CrNiMo19-11-2 | A182 F316L | G5151 SCS16A |
| A351 CF8C | 1.4552/GX5CrNiNb19-11 | A182 F316LN | G5151 SCC21 |
| A351 CG8M | 1.4412/GX5CrNiMo19-11-3 | A182 F317 | – |
Bellow Material Comparison Table
| Material Comparison | GB | ASTM | DIN/EN |
| 06Cr19Ni10 | A240 304 | 1.4301 | |
| 022Cr19Ni10 | A240 304L | 1.4306 | |
| 06Cr17Ni12Mo2 | A240 316 | 1.4401 | |
| 022Cr17Ni12Mo2 | A240 316L | 1.4404 | |
| 316Ti | A240 316Ti | 1.4571 | |
| Gh625 | Inconel 625 | 2.4856 | |
| Ni68Cu28Fe | Monel 400 | 2.4360 | |
| 00Cr16Ni75Mo2Ti | Hastelloy C-276 | 2.4819 |
