Concentric Butterfly Valves

SIERRA model 7200 is concentric rubber lined valve, double flanged or wafer type that shall be suitable for installation between flanges. Face to face according to EN 558 table 5 basic series 20 valves are drilled in accordance with EN 1092-2. The disc has a profiled sealing edge which requires minimal deformation of the liner to achieve a tight sealing. This gives less wear of the liner and low operating torques.  The 7200-butterfly valve is an excellent valve for isolation purposes and it might also be used for throttling purposes under certain conditions.

Main Product Features

• Symmetric and slim design of disc ensures favorable flow, low pressure loss and energy cost saving
• Smooth machining of disc edge also provides less deformation on the rubber sealing thus longer life of the valve
• Absolutely tight sealing with flow in either direction
• The valve body and disc are accurately machined which results in low operating torque and long service life and reliability
• Shaft bearings design prevents shaft deflection and guarantee optimum guidance even after many years of operating service
• Can be supplied in flanged or wafer design
• The valve can be installed in any desired position
• Disc shall be made of ductile cast iron, stainless steel, Duplex, Aluminum bronze

U-Section Butterfly Valves AR
U-Section Butterfly Valves EN
Wafer Butterfly Valves AR 
Wafer Butterfly Valves EN 

Concentric BFV material of construction

Butterfly valves material of construction

 BFV7200 U-SEC with GB-PN10 
BFV7200 U-SEC with GB-PN16  
BFV7200 U-SEC with PA-PN10  
BFV7200 U-SEC with PA-PN16  
BFV7200 U-SEC with EA-PN10 
BFV7200 U-SEC with EA-PN16  
BFV7200 wafer with GB-PN10   
BFV7200 wafer with GB-PN16   
 BFV7200 wafer with PA-PN10   
BFV7200 wafer with PA-PN16   
 BFV7200 wafer with EA-PN10   
BFV7200 wafer with EA-PN16   

Operation and Maintenance Manual ( Gearbox )

 SERIES 7200 U-SECTION TYPE COCENTRIC BUTTERFLY VALVE