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Ralated Links
The ball valve is designed according to the demands of the
customers to meet the requirements of cracking-resistance from spur
stress under sulfadiazine environment. Therefore under this
requirement we accord to the standards concerned of NACE-National
Association of Corrosion Engineer strictly in the design and
material selecting manufacturing test and surface-treating and
lacquer-finishing process.
The ball valve series not only bears wide range of selected
materials. Furthermore, the internal components of the valve are
all nickel-plated on surface or made of the material 316, and the
seal ring is made of the special polymeric material. Therefore, the
valve not only features by favorable anti-corrosion and
sulfide-resistance capacity. The fine fire-proofing,
static-prevention and sealing performance are also enjoyed by it.
With wide range of suitable pressure and temperature, the valve
features by both all-diameter types and crinkled-diameter ones with
diversified applicable driving units. It is a kind of ideal choice
in chemical industry, petroleum refining industry, mining and
conveying system of natural gas etc.
| The pressure of the medium wouldpress the valve seat off from globe body to make a auto-decompression realizationwhen the pressure of the medium remained in the lumen of the valve increasesabnormally caused by temperature shift. The seat reset automatically afterdecompression. | The valve is stall reliable onoccasion of fire hazard happens or the seal ring on the valve seat burned orsoftened caused by abnormal temperature-rise. Meanwhile, the contact of natalagainst metal by the seat and globe body would be made up to prevent the firefrom expanding. This course meets fully the API 6FA. | After the education gear beingscrewed-off, the valve seat could be checked for leakage, and vented toreduce the medium from polluting the valve. When the valve stays at full-openor full-close position under operating model, the stuffing box on stem couldbe replaced. |
| Besides normal sealing measures,the specially-mounted auxiliary sealed construction on the valve seat canwork to first-aid the leakage caused by the damage of the seal ring. | The double sealing of stuffing PTFEand O-ring is applied for sealing the part of stem, thus this measure isapplicable especially for gaseous medium. The high-quality self-lubricatingbearing SF is utilized on the motion parts of the handle to minimize thecoefficient of friction and reduce operating physical force. |
NO. | Accessory name | Material | |
| GB | ASTM | ||
| 1 | Body | WCB A105 | A182 F316 |
| 2 | Spring | 60Si2Mn | 316 |
| 3 | Sealing Ring | RPTFE | |
| 4 | Gasket | Graphite stainless steel | Graphite+316 |
| 5 | Blow off screw | 25 | 316 |
| 6 | O-Ring | Rubber | Rubber |
| 7 | Bottom cover | A105 | 316 |
| 8 | Screw | 35 | 316 |
| 9 | Stem | 2cr13+nickel coated phosphorus | 316 |
| 10 | Sliding bearing | PTFE& stainless steel | 316+PTFE |
| 11 | Ball | A105 | A182 F316 |
| 12 | Seat | A105 | 316 |
| 13 | Stud | 35CrMoA | 316 |
| 14 | Nut | 35 | 316 |
| 15 | Cover | A105 | 316 |
| 16 | Stuffing | PTFE | PTFE |
| 17 | Gland | WCB | A216-WCB |
| 18 | Key | 45 | 316 |
PN （Mpa） Nominal pressure | The highest | Test pressure | Pressure class | ||
Pipeline Ball Valve For Long-Distance TransportationModel Class 1501500Lb Ralated Links Pipeline Ball Valve For Long-Distance Transportation ...
