SMP Controls Systems Private Limited

Tangent Double Flanged Centric Design Bi-directional Butterfly Valves are crafted to fit a variety of flange drillings. Each valve size flange is designed with the maximum outside diameter and thickness for the specified flange standards.
“One significant advantage of Tangent products is their international compatibility.”

The valve face-to-face dimensions comply with BS 5155 Short, ISO 5752 Table 4, EN-593, and AWWA C-504.

The replaceable seat design allows for easy field replacement and addresses internal valve body protection as the seat encapsulates the wetted area. The molded seat fits snugly into the body, offering superior corrosion protection. The seat covers the valve body’s interior and extends onto the grooved flange faces, providing flange sealing and eliminating the need for gaskets. A peripheral band on the seat fits into a bed-groove pocket in the body, ensuring the seat remains securely in place when the disc is closing and moving from the seating surface.

Upper and lower shaft bearings prevent shaft deflection and provide optimal guidance, enhancing valve longevity. Primary shaft sealing is achieved through pre-loaded contact between the seat's flat surface, completely isolating the shaft and body from the flow stream.

The disc hub-edge profile is spherically machined and manually polished to ensure full concentric seating without obstructing flow, maximizing seat life, minimizing torque, and ensuring a bubble-tight shut-off. The disc-screw connection is robust, shake-proof, and allows for quick and easy disassembly.

• Design Standards: Conforms to EN 593 or API 609, with additional applicable standards available upon request.
• Testing Standards: Complies with API 598 or BS EN 12266-I, ensuring bubble-tight shut-off capabilities.
• Certification: EN10204 Type 3.1 certificate is standard; manufacturing adheres to ISO 9001:2015 quality system.
• Casting Inspection: Conducted according to MSS-SP-55 standards, with other applicable standards available upon request.
• Trims Available: A range of casting materials offered, including CI, DI, NICI, NIDI, WCB, CF8, CF8M, CF3M, GR. 4A-5A, and NAB, along with seat materials such as EPDM, BUNA-N, and VITON. Various coatings, bonding, and linings can be tailored to customer requirements.
• Disc Design Options: Available without disc screws based on customer specifications.
• Testing Procedures: 100% factory testing (hydrostatic and pneumatic) and inspection of valves in accordance with standards.
• Operational Options: Available with lever, gear, pneumatic, or electric operation based on customer needs.