Butterfly Valve can be used in bi-directional pressure differential to prevent backflow in systems designed for unidirectional flow. Wafer Bonded/Renewable Seat Butterfly Valve no requirement of any gasket to mount between two flanges. BHAVYA Butterfly Valves are available with wider range of Elastomer Rubber Seat to suit various industrial applications with various operations. Wafer Butterfly Valves are also called by Center Disc Butterfly Valve or Slim Seal Design Butterfly Valve. Wafer Type Butterfly Valve also can be used for Flow Control Application or Shut-off purpose.
   We do manufacturing & exporting of Butterfly Valve in size from 2?(50NB) to 24?(600NB) with various option body, disc & seat material. Butterfly valve body mostly used Cast Iron or Cast Steel because the same not comes direct in touch with flow media. Bhavya Butterfly Valve design is as per BS 5155 & API 609 and Test Standard BS 6755-I & API 598
VALVE DESIGN DATA

Size: 1"-40"

Nominal pres sure:  Class 150Lb-300Lb PN1.6-4.0MPa
Material:  WCB,LCB,CF8,CF8M,CF3,CF3M,A105,LF2,F304,F316,F304L,F316L
Design & Manufacture Std.:  API 609、GB/T12338
Face to Face Std.: ANSI B16.34 、API 608 、API 6D
Flange、Thread End Connection Std.: ASME B16.5、 ANSI B1.20.1
API  609   Butterfly Valves:Double Flanged, Lug- andWafer-Type
API 608 is intended to provide the similar additional requirements for steel and alloy steel ball valves beyond
ASME B16.34 as do the following API standards for other valve types:
API  594,  Check Valves: Flanged, Lug, Wafer and Butt-welding   
API Standard 599, Metal Plug Valves—Flanged, Threaded and Welding Ends
API Standard 600, Bolted Bonnet Steel Gate Valves for Petroleum and Natural Gas Industries
API Standard 602, Steel Gate, Globe and Check Valves for Sizes DN 100 and Smaller for the Petroleum and Natural Gas Industries
API Standard 603, Corrosion-resistant, Bolted Bonnet Gate Valves Flanged and Butt-welding Ends
API 609, Butterfly Valves: Double Flanged, Lug and Wafer-type 
ASME B1.20.1, Pipe Threads, General Purpose (Inch)
ASME B16.5, Pipe Flanges and Flanged Fittings NPS 
ASME B16.10, Face-to-Face and End-to-End Dimensions
ASME B16.11, Forged Fittings, Socket-welding and Threaded
ASME B16.20, Metallic Gaskets for Pipe Flanges—Ring-joint, Spiral-wound and Jacketed 
ASME B16.25, Butt Welding Ends
ASME B31.3  Process Piping
API 6FA  Fire Testing of Valves
API Std 598  Valve Inspection and Testing

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