Hastelloy C276 B3 3-Piece Ball Valve
High Performance • Durable • Leak Proof
Premium Hastelloy C276 B3 3-Piece Ball Valve with enhanced corrosion resistance.
Technical Specifications
Key Features & Applications
Chemical plants often handle services that look similar on paper but behave very differently in actual operation. C276 is generally chosen for broad mixed-corrosion conditions, while B3 is intended mainly for strongly reducing environments. African Valve is a leading Hastelloy C276/B3 3 Piece Ball Valve Manufacturer in Africa, supplying South Africa, Nigeria, Egypt, Angola, wider African markets and international projects. UNS N10276 Hastelloy C276 consists of nickel, chromium, and molybdenum. This alloy finds application in numerous chloride-containing, oxidizing, and reducing chemical streams. UNS N10675 Hastelloy B3 is an alloy consisting of nickel and molybdenum. This alloy has been developed to deal with reducing acids, including some hydrochloric and sulfuric acid environments. However, B3 has to be used carefully in environments that contain dissolved oxygen, ferric salts, and other oxidizers. Thus, the C276/B3 material specification refers to two alloys, but not interchangeability between them. The valve consists of a removable central body held between two end sections. The ball, seats and sealing components are located inside the centre section. This arrangement makes the valve easier to inspect and service than a one-piece or two-piece design.Depending on the end connection, the centre body can often be removed while the end pieces remain in the pipeline. This reduces maintenance work on chemical skids and process lines where repeated pipe cutting or flange disturbance would be undesirable. The ball turns through 90 degrees to provide opening and shutoff. Full-bore construction keeps the flow path close to the pipe bore, while reduced-bore designs reduce weight and body size.The body, ball, stem and end connectors should be supplied in the selected Hastelloy grade or a verified compatible material. Seat retainers, springs and gland parts exposed to the process also need a corrosion review.PTFE and RPTFE seats suit many clean chemical fluids. PEEK may be considered for higher pressure or temperature, while metal seats are used where solids, erosion or frequent cycling make soft seats unsuitable. Optional features can include a blowout-resistant stem, anti-static device, cavity-pressure relief and fire-tested construction. Size Range: DN15 to DN200 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, threaded, socket weld or butt weld Operation: Lever, gearbox, pneumatic actuator or electric actuator Body Materials: Hastelloy C276 / UNS N10276 or Hastelloy B3 / UNS N10675 Body Construction: Three-piece Bore Type: Full bore or reduced bore Seat Options: PTFE, RPTFE, PEEK or metal seat Actuator Mounting: ISO 5211 C276 versions are considered for chlorine-bearing chemicals, acid mixtures, pulp bleaching, scrubber systems and corrosive wastewater. B3 versions are more closely associated with reducing-acid service where oxidising impurities have been assessed and controlled.Cleaning chemicals, shutdown conditions and trace contaminants should be included in the material review because they can be more aggressive than the normal operating fluid. C276 and B3 components cannot be identified by appearance. Material Test Certificates and PMI are therefore important for confirming the body, ball, stem and end connectors. Dimensional inspection, shell testing, seat testing and torque checks are carried out before release. African Valve supplies C276 and B3 three-piece ball valves for chemical and process installations across Africa. The enquiry should clearly identify the required alloy and provide the full chemical composition, concentration, temperature, pressure, seat material and end connection.Hastelloy C276/B3 3 Piece Ball Valve Manufacturer in Africa
Understanding the C276 and B3 Difference
Three-Piece Body Arrangement
Ball, Stem and Seat Selection
Technical Specifications
Where Each Alloy Is Used
Manufacturing and Material Verification
Nickel-Alloy Valve Supply