NSW is an ISO9001 certified manufacturer of industrial ball valves. Segment Ball Valve manufactured by our company have perfect tight sealing and light torque. Our factory has a number of production lines, with advanced processing equipment experienced staff, our valves have been carefully designed, in line with API6D standards. The valve has anti-blowout, anti-static and fireproof sealing structures to prevent accidents and extend service life. -Quality assurance: NSW is ISO9001 audited professional floating ball valve production products, also have CE, API 607, API 6D certificates -Productive capacity: There are 5 production lines, advanced processing equipment, experienced designers, skilled operators, perfect production process. -Quality control: According to ISO9001 established perfect quality control system. Professional inspection team and advanced quality inspection instruments. -Delivery on time: Own casting factory, large inventory, multiple production lines -After-sales service: Arrange technical personnel on-site service, technical support, free replacement -Free sample, 7 days 24 hours service-Full or Reduced Bore -RF, RTJ, BW or PE -Side entry, top entry, or welded body design -Double Block & Bleed (DBB)，Double Isolation & Bleed (DIB) -Emergency seat and stem injection -Anti-Static Device -Actuator: Lever, Gear Box, Bare Stem, Pneumatic Actuator, Electric Actuator -Fire Safety - Anti-blow out stem1. the fluid resistance is small, the flow coefficient is large, the adjustable ratio is high. It can reach :100:1, which is much larger than the adjustable ratio of straight single-seat regulating valve, two-seat regulating valve and sleeve regulating valve. Its flow characteristics are approximately equal percentage.

Product	Segment Ball Valve (V port)
Nominal diameter	NPS 2”, 3”, 4”, 6”, 8”, 10”, 12”, 14”, 16”, 20”
Nominal diameter	Class 150, 300, 600, 900, 1500, 2500.
End Connection	Flanged (RF, RTJ), BW, PE
Operation	Lever, Worm Gear, Bare Stem, Pneumatic Actuator, Electric Actuator
Materials	Casting: A216 WCB, A351 CF3, CF8, CF3M, CF8M, A352 LCB, LCC, LC2, A995 4A. 5A, Inconel, Hastelloy, Monel
Structure	Full or Reduced Bore, RF, RTJ, BW or PE, Side entry, top entry, or welded body design Double Block & Bleed (DBB)，Double Isolation & Bleed (DIB) Emergency seat and stem injection Anti-Static Device
Design and Manufacturer	API 6D, API 608, ISO 17292
Face to Face	API 6D, ASME B16.10
End Connection	BW (ASME B16.25)
	MSS SP-44
	RF, RTJ (ASME B16.5, ASME B16.47)
Test and Inspection	API 6D, API 598
Other	NACE MR-0175, NACE MR-0103, ISO 15848
Also available per	PT, UT, RT,MT.
Fire safe design	API 6FA, API 607

2. reliable sealing. The leakage grade of the metal hard seal structure is Class IV of GB/T4213 "Pneumatic Control Valve". The leak grade of the soft seal structure is Class V or Class VI of GB/T4213. For hard sealing structure, the ball core sealing surface can be made of hard chromium plating, surfacing cobalt based cemented carbide, spraying tungsten carbide wear-resistant coating, etc., to improve the service life of the valve core seal. 3.open and close quickly. V-type ball valve is an angular stroke valve, from fully open to fully closed spool Angle 90°, equipped with AT piston pneumatic actuator can be used for rapid cutting conditions. After installing the electric valve positioner, it can be adjusted according to the analog signal 4-20Ma ratio.4.good blocking performance. The spool adopts 1/4 hemispherical shape with unilateral seat structure. When there are solid particles in the medium, the cavity blockage will not occur like ordinary O-type ball valves. There is no gap between the V-shaped ball and the seat, which has a large shear force, especially suitable for the control of suspension and solid particles containing fiber or small solid particles. In addition, there are V-shaped ball valves with global spool, which are more suitable for high pressure conditions and can effectively reduce the deformation of the ball core when the high pressure difference is made. It adopts single seat sealing or double seat sealing structure. The V-shaped ball valve with double seat seal is mostly used for clean medium flow regulation, and the medium with particles can cause the danger of clogging the middle cavity.5. V-type ball valve is a fixed ball structure, the seat is loaded with spring, and it can move along the flow path. Can automatically compensate the spool wear, prolong the service life. The spring has hexagonal spring, wave spring, disc spring, cylindrical compression spring and so on. When the medium has small impurities, it is necessary to add sealing rings to the spring to protect it from impurities. For double seat sealed global spool V-ball valves, the floating ball structure is used. 6, when there are fire and anti-static requirements, the valve core is made of metal hard seal structure, the filler is made of flexible graphite and other high temperature resistant materials, and the valve stem has a sealing shoulder. Take electrostatic conduction measures between valve body, stem and sphere. Comply with GB/T26479 fire-resistant structure and GB/T12237 antistatic requirements. 7, V-shaped ball valve according to the different sealing structure of the ball core, there are zero eccentric structure, single eccentric structure, double eccentric structure, three eccentric structure. The commonly used structure is zero eccentric. The eccentric structure can quickly release the spool from the seat when it is opened, reduce the wear of the seal ring and extend the service life. When closed, a eccentric force can be generated to enhance the sealing effect.8. The driving mode of V-type ball valve has handle type, worm gear transmission, pneumatic, electric, hydraulic, electro-hydraulic linkage and other driving modes.9, V-type ball valve connection has flange connection and clamp connection two ways, for the global spool, double seat sealing structure and thread connection and socket welding, butt welding and other connection methods. 10, ceramic ball valve also has V-shaped ball core structure. Good wear resistance, but also acid and alkali corrosion resistance, more suitable for the control of granular media. The fluorine lined ball valve also has a V-shaped ball core structure, which is used for regulating and controlling acid and alkali corrosive media. The application range of V-type ball valve is more and more extensive.