Hastelloy C276 2-Piece Flanged Ball Valve
High Performance • Durable • Leak Proof
SKU: HC276FBV-UG-029
Corrosion-resistant Hastelloy C276 2-Piece Flanged Ball Valve for extreme chemical service.
Highly corrosive chemical lines need more than a stainless-steel body and a standard soft seat. Acid mixtures, chlorides and process contaminants can attack the ball, stem and seat pockets even when the valve appears sound from the outside. African Valve is a prominent Hastelloy C276 2 Piece Flanged Ball Valve Manufacturer in Africa, supplying South Africa, Nigeria, Egypt, Angola and other African countries, with valves also prepared for international project requirements. Hastelloy C276 is an alloy composed of nickel, chromium, molybdenum and its identification number is UNS N10276. This material is used in situations when CF8M or duplex stainless steel and other materials do not offer sufficient resistance to local corrosion. This alloy is good in both oxidizing and reducing chemical environments and is known for its corrosion resistance especially pitting, crevice corrosion and chloride stress-corrosion cracking. The low carbon and silicon content is important for preserving corrosion resistance in the weld areas. However, the choice of C276 by fluid name alone is not appropriate because of temperature, acid concentration and cleaning. The valve uses a main body and an end body that enclose the ball, seats and stem assembly. This two-piece arrangement is more compact than a three-piece valve and suits flanged process lines where the complete valve can be removed during maintenance.The ball turns through 90 degrees. When its port aligns with the pipeline, the valve is fully open. Rotating the ball across the flow brings it into contact with the seats and provides shutoff. Full-bore construction reduces flow restriction and supports line flushing, while reduced-bore versions offer a smaller body where a reduced port is acceptable.This valve is designed mainly for isolation. Holding it partly open for long periods can concentrate velocity at the seat edge and cause premature wear. The pressure-containing body may be produced from cast or wrought C276 material according to size, pressure class and manufacturing route. The ball, stem, gland components and seat retainers should also be manufactured from C276 or another verified compatible alloy. Using a high-alloy body with lower-alloy internals can create an early corrosion point inside the valve.PTFE and RPTFE seats suit many clean chemical services. PEEK or other engineered polymers may be considered where pressure and temperature are higher. Metal-seated construction is available for abrasive media, elevated temperature or frequent cycling. Depending on the valve design, options may include a blowout-resistant stem, anti-static device, cavity-pressure relief, fire-tested construction and ISO 5211 actuator mounting. Size Range: DN15 to DN300 Pressure Ratings: ASME Class 150 to Class 600 Design Standards: API 608, ISO 17292 and ASME B16.34 Testing Standard: API 598 End Connections: Flanged RF or RTJ Operation: Lever, gearbox, pneumatic actuator or electric actuator Body Material: Hastelloy C276 / UNS N10276 Bore Type: Full bore or reduced bore Seat Options: PTFE, RPTFE, PEEK or metal seat Flange Standard: ASME B16.5 Face-to-Face Standard: ASME B16.10 where applicable Quarter-turn operation gives fast isolation with fewer stem movements than a multi-turn valve. The straight port of a full-bore design keeps pressure loss comparatively low when the valve is fully open. Flanged ends also simplify removal from chemical process lines where inspection or replacement is carried out during planned shutdowns. Hastelloy C276 two-piece flanged ball valves are used in acid transfer, chlorine-related processing, pulp bleaching, flue-gas scrubbing, chemical recovery, corrosive wastewater treatment and offshore chemical injection. They are also considered where stagnant pockets or deposits create more severe local corrosion than the main flowing stream. Material Test Certificates are checked against the heat numbers of the body and pressure-containing parts. Positive Material Identification may be performed on the body, ball and stem. Dimensional inspection confirms flange drilling, face-to-face length and ball alignment, while hydrostatic shell and seat-leakage testing verify pressure containment and shutoff. NDT can be added when required by the project specification. Hastelloy C276 two-piece flanged ball valves are offered by African Valve for various applications such as chemicals, maritime, offshore, and process industry systems. Selection needs to be done keeping in view the chemistry of fluids, pressure, temperatures involved, type of seats, flange standard, need of actuators, etc.Hastelloy C276 2 Piece Flanged Ball Valve Manufacturer in Africa
Why Is Hastelloy C276 Selected?
Two-Piece Body and Ball Operation
Materials, Trim and Seat Selection
Technical Specifications
Performance and Service Benefits
Industrial Applications
Manufacturing and Inspection
Hastelloy Valve Supply for African Projects