Low Torque Butterfly Valve

Having over 30 years of experience in the designing and manufacturing of Butterfly Valves, Advance Valves has widened its range by offering Low Torque BF10R Series butterfly valves to its range of Concentric, Double Eccentric & the High Performance Triple Eccentric Butterfly valves.

Advance Valves BF 10R series is a lightweight low torque butterfly valve, the compact design of which provides excellent structural stability, flow efficiency and effective sealing resulting in prolonged service life and ease of operation. A unique design feature includes a replaceable seat with tongue-and-groove design which provides complete isolation of flowing media from the body at all times. The uniqueness of this specially-designed lining is that the liner is an easy “clip-on” design eliminating the use of any bonding material whatsoever. This feature therefore avoids disbonding between the valve body and the liner which occurs in other valves during operations over time leading to valve-body damage and consequent valve replacement and down time.

This valve is ideal for low pressure applications upto 10 bar (150psi).

Advance Valves has optimised the requirement for actuated valves solution whereby its full range of rubber-lined concentric butterfly valves are mated to a single-phase electrical operator.

This product has a specially designed high induction motor generating a powerful starting torque. The actuator is compact and lightweight and is maintenance-free - truly a fit-nforget solution, additionally eliminating the headaches of actuator-sizing by the end-users.

Key Features of Advance Valves’ Low Torque Butterfly Valve

• Designs available as per API 609, EN:BS 593, IS 13095.
• Anti-Static & Anti-Blowout features.
• Low Operating Torque.
• Wafer body design from 50mm (12”)upto 300mm (12”). Lugged models available on request.
• Valve Rating of PN10 (150psi).
• Operating temperatures ranging between -20 ° C to 120 ° C.
• Bi-Directional Flow with Bubble-Tight Shut-Off.
• Capable of both On / Off and regulating services.
• Seat Liner easily replaceable
• ISO 5211 Operator Mounting Flange.
• Perfectly mated to a single-phase electrical actuator.
• Maintenance and trouble free.

Design & Performance Features Explained

• Replaceable Seat to Body Construction: A special replaceable seat with tongue-and-groove design provides complete isolation of flowing media from the body. The sandwiched replaceable seat design eliminates the need for additional line gaskets.
• Spherical Design of Disc & Seat: The spherical design of the replaceable seat near its contact area with the stem provides primary stem sealing and reduces the seating / unseating torque. This design not only reduces wear and tear of the contact surface of the seat but also provides tight shut-off and excellent regulating characteristics to the valve.
• Unique Torque-Reducing Design: A specially designed double “D” connection in the upper stem helps to improve the efficiency of torque transfer from the valve operator to the disc. This helps in optimizing actuator selection.
• Primary & Secondary Stem Seal Design: The stem seal design incorporates a primary seal inherently ensured by interference fit of the soft seat with the disc hub and the secondary sealing is provided by a special double o-ring design which prevents leakages even under adverse conditions.
• Smooth Operations: The incorporation of heavy duty corrosion-free bushes avoids shaft deflection and minimizes bearing friction.
• Integral ISO:5211 Mounting Flange: This standardized operator mounting flange is available for assembly of all operators such as hand-levers, gear-boxes, electrical and pneumatic operators further add to ease in operations.

Range of Offerings

Design Std.: API 609, EN:BS 593, IS 13095.
Face-to-Face Dimensions: API 609 Cat. A, EN 558 Sr 20.
Size Range: NB 50mm (2”) to 300mm (12”).
Pressure Rating: PN 10 (150psi).
Temperature Rating: -20°C to 120°C.
End Connection: Wafer (Lugged models available on request).
Flange Standard: ASME B16.5 #150, ASME B16.1 #125, AWWA C504, JIS OK.
Testing: As per API 598