Gear Box Operated 36'' Class600 Trunnion Mounted Ball Valve WCB
Product Description
Trunnion Mounted ball valve is a ball ball with a fixed shaft, by two sections of the ball connected with the fixed shaft support.
When closed, under the action of medium pressure, the sphere will not produce displacement.
Trunnion Mounted Ball Valve Test Procedure
| HYDROSTATIC SEAL TEST API 6D 10.3 and 10.4 |
| Sequence | Area Pressure | Duration(min) | Description |
| SHELL TEST | | A | 1.5xPN | 6″-10″ | 5 | 1. Valve in partial open.
2. Set the pressure to 150% PN.
3. Reduce the pressure to 50% PN.
4. Reset the pressure to 150% PN.
5. Hold the pressure for the duration of testing.
|
| B | 1.5xPN | 12″-18″ | 15 |
| C | 1.5xPN | 20″-60″ | 30 |
| SEAT TEST | | A | 1.1xPN | 5 | Seat hydrostatic seal at A end towards body B |
| B | Atmospheric |
| C | Atmospheric |
| | A | Atmospheric | 5 | Seat hydro seal at C end towards body B |
| B | Atmospheric |
| C | 1.1xPN |
| | A | 1.1xPN | 5 | Seat hydro seal test for both A and C |
| B | Atmospheric |
| C | 1.1xPN |
| AIR SEAL TEST API 6D 10.4 |
| SEAT TEST | | A | Atmospheric | 5 | Seat air seal test at A end towards body B |
| B | Atmospheric |
| C | 80PSLG(5.5bar) |
| | A | 80PSLG(5.5bar) | 5 | Seat air seal test at C end towards body B |
| B | 80PSLG(5.5bar) |
| C | Atmospheric |
Trunnion Mounted Ball Valve Application
Petroleum Refining
Oil and Gas Production
Petrochemicals
Chemicals
Marine
Pulp and Paper
Power Generation
Steel / Primary / Metals
Copmpany Profile
Zigong Weite Valve Mfg Co., Ltd. is a professional Manufacture factory, we have been in valve field more than 15 years.
We have a plant area of 15,400 m2 and is equipped with a technology research and development center.
The company has 137 employees, 10 engineers, and 17 technicians,12 qualified welders with certificate,
11 non-destructive testing personnel have level Ⅱ certificate(RT, UT, MT, PT).
Our company has passed API and TS certification.We mainly produces valves of ANSI, DIN, and other standards. Products are widely
used in water, oil, natural gas, petroleum, chemical, urban pipe network and other fields.
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Class 600 36 Inch Ball Valve With Gearbox For Petroleum Refining Images
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