| Place of Origin: | LISHUI,ZHEJIANG |
|---|---|
| Brand Name: | VERVO |
| Certification: | API/ISO/CE |
| Model Number: | Q61F-DN50-150LB |
| Minimum Order Quantity: | 1 |
| Packaging Details: | plywood case |
| Delivery Time: | 30 |
| Payment Terms: | T/T, L/C, D/P, Western Union |
| Supply Ability: | 400000 |
| Design Standard: | API 6D, API 608, ISO 17292 | Body Material:: | WCB,LCB,CF8,CF8M,CF3,CF3M,A105,LF2,F304,F316,F304L,F316L |
|---|---|---|---|
| Nominal Diameter: | NPS 2"~48" | Pressure: | Class 150~2500 |
| End Connection.: | ASME B16.5,ASME B 16.47,ASME B 16.25 | Face To Face: | API 6D, ASME B16.10 |
| Test And Inspection: | API 6D, API 598 | ||
| High Light: | 2 PC Side Entry Trunnion Ball Valve,trunnion mounted type ball valve,Top Entry Desi ball valve |
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INTRODUCTION
A ball valve is a valve with a spherical disc, the part of the valve which controls the flow through it . The sphere has a hole, or port, through the middle so that when the port is in line with both ends of the valve, flow will occur . When the valve is closed, the hole is perpendicular to the ends of the valve, and flow is blocked .
A trunnion ball valve has additional mechanical anchoring of the ball at the top and the bottom, suitable for larger and higher pressure services . To ensure tight sealing at low pressure, high-tensile
springs force the seats against the ball while at higher pressure, the medium pressure pushes upstream seat towards the ball .
EMERGENCY SEALS
For trunnion mounted ball valve size NPS 6 (DN 150) and above, it comes with provisions for sealant injection on both the stem and seat while for sizes NPS 5 (DN 125) and below on body cavity . In case of failed underperformed seals, a temporary emergency seal can be achieved by injecting sealants .
ANTI-STATIC
Because the ball and stem in a ball valve are suspended on non- metallic parts, i .e . the seat seal and stem seal, there is a possibility a static charge may build up on the stem- ball, a mechanical (antistatic metal spring and ball) is introduced in the design to maintain the metal - to- metal contact between the rotating ball/stem and the valve body which will ground any charges to the valve body .
BLOWOUT PROOF STEM
The valve stem is made with a shoulder at the bottom end . It’s securely retained by the stuffing box, to avoid that the stem, under certain operating conditions, accidentally blows out . Other designs are available on request .
Keywords of VERVO trunnion ball valves are offered in 2 PC side entry, 3 PC side entry, welded body and top entry design in a wide range of carbon, stainless steel, duplex stainless steel, alloy and other special materials.
Pneumatic Actuated Ball Valve,DN40 Ball Valve,A182 F316 Ball Valve,3 Piece Ball Valve,Soft Seal Ball Valve,Three Piece Ball Valve,Forging steel Stainless Steel Ball Valve,Metal to Metal Seat Ball Valve,API 608 Ball Valve,Pneumatic Operated Ball Valve,40MM Ball Valve, Threaded / Socket Weld / Butt Weld / Flanged Ball Valve,Full Bore Three-Piece Socket Weld Ends
