API 6D,ISO 17292 Top-entry ball valve F304 F316 R-PTFE SEAT 300LB

USAGE
The top entry ball valve is mainly used on pipelines and industrial systems. It has such advantages as top online maintenance function, small fluid resistance, simple structure, reliable sealing, convenient operation and maintenance, rapid on-off operation, flexible opening and closing, etc. The driving modes include manual operation, worm and worm gear transmission, pneumatic operation and electric operation. The connection ends can be flange or butt welding.
STRUCTURAL FEATURES
1. Integral structure
The body adopts the integral structure, so as to ensure that it has enough strength and rigidity under the maximum rated working pressure. The valve trims have been carefully designed and selected to ensure reliability under various service conditions. The sufficient wall thickness and the connection bolts of high strength are very helpful to the maintenance and servicing of valves and are able to endure pipelines stress.
2. Top Entry Structure
The vale adopts the top entry structure. The most distinctive difference between this kind of valve and others is that the online maintenance function can be realized without the need of removing the valve from the pipeline. The seat adopts the concession type seat structure, and the rear end of the seat retainer is set as oblique angle to prevent impurities accumulated on the seat from influencing the concession of seat.

​​Key features     Soft, metal or composite material seated Bi-directional tight shut-off Double block & bleed Fire safe and fire tested Low operating torque design Wide range of materials and sizes Spring loaded seats Trunnion mounted with energized seats Anti-blowout stem design Suitable for above ground or below ground installation Top-entry design leads to fully maintenable in line Forged or cast body options       Benefits   Use of forgings and the independent spring or bellows loaded floating seats which are always in contact with the ball make these valves the preferred solution for various critical applications like cryogenic, high temperature, low emission, Emergency Shutdown (ESD) or High Integrity Pressure Protectors (HIPPS) systems and sub-sea. Valves can be equipped with bellow seals, steam flushing ports and protected bearings, to cope with medium/ high amounts of solids like tar sands or catalysts. Approved by major end users and contractors and are designed to meet SIL3 requirements according to IEC 61508. Double or triple stem seal design (with lip seals or o-rings or optionally with leak off chambers for predictive maintenance) allows us to meet and exceed the most stringent low fugitive emissions norms (ISO 15848) making our valves suitable to handle toxic or lethal fluid services. The design will meet all requirements of critical service applications. Seatsare always in contact with the ball to provide an effective tight seal even at low differential pressures.​     Typical applications   Well-head; flow-lines Pipeline valves Riser-ESDV Gas over oil valves (GOV) Blowdown valves (BDV) Shutdown valves (SDV) Scraper trap isolation Process valves SSIV ROV HIPPS Sub-sea   Product Specification   End connections ANSI flanges ANSI B16.5 for sizes up to 24” ANSI B16.47 for sizes 26” and larger Compact flanges NORSOK L-005 Hub connectors All major hub end designs available Welding ends Butt welding to ANSI B16.25 or equivalent Socket welding to ASME B16.11 Pup pieces available on request

​ Self relieving seats Double piston effect seats SPE/DPE configurator   Cryogenic Low-temperature Hot tapping Inching Scraper-trap Switching valves Metering valves Quick closing (below 1 sec) Oil sand slurry High-temperature Buried / underground valves​ ​ Sizes Nominal pipe size 1/2” through 60” (DN15 through DN1500)   Pressure rating ANSI Class 150 through 2500 and 4500 API 2000 through 15000   Temperature range From -196°C to 650°C (-321°F to 1200°F)​