AWWA Large Diameter Double Flanged Butterfly Valve

Aira offers high-performance double flanged butterfly valves designed for bi-directional shut-off and modulating service in demanding industrial process lines. These valves are engineered for large diameter applications, with a robust build and multiple material configurations including carbon steel, stainless steel, duplex, and custom alloys, ensuring optimal performance in various industries.

Specifications & Standards

Design & Manufacturing Standards: AWWA C-504 / AWWA C-516
Face-to-Face Dimension (up to 72”): As per AWWA C-504 / C-516 or Manufacturer Standard
Flange Conformity: AWWA C-207 Class "D" / Class "B"
Inspection & Testing: API 598 / BSEN 12266-1 / AWWA C-504 / C-516 / IS 13095
Design Standard: API 609 / IS:13095 / BSEN 593 / AWWA C-504 / C-516
Size Range: 50” to 104” (1250 mm to 2600 mm) (12” to 48” on request)

Temperature Range:

Metal to Metal: -0°C to 480°C
Soft Seating: -0°C to 120°C
Pressure Rating: PN 2.5 / PN 6 / PN 10 / PN 16
Pressure Class: 150#, 300#, 600#, PN-10 to PN-40
Seat Leakage Class: Class VI (As per ANSI B16.104)

End Connection:

Wafer Type D/F
AWWA C-504 D/F
IS 13095
150#, 300#, 600#
PN-10 to PN-40
Top Flange Drilling: ASME B16.5 / 16.47 Class 150
Flange Drilling: ASME B16.5 / 16.47 Class 150
Media: Water, Oil, Steam, Air, Gas, Chemicals, Vacuum
Certification: CE Approved, SIL3 Certified

Material Options

Body Material:Cast Iron, Ductile Iron, S.G Iron, WC, CF8, CF8M, CA15, WCC, LCB, WC6, WC9, WC12, Hastelloy C, Nickel Aluminium Bronze, Duplex 4A/5A/6D, Super Duplex, Alloy 20
Disc Material:Same as Body Material options
Seat Material:S304, SS304L, SS316, SS316L, SS304 + Stellite 6, SS316 + Stellite 6/21, Inconel, Duplex 4A / 5A

Key Features & Benefits

Standards Compliance: Fully compliant with AWWA C-504 / C-516 for dependable performance in industrial and municipal systems
Double Flanged Design: Allows secure bolting on both ends, enhancing strength and alignment in large pipeline installations
Large Diameter Capability: Ideal for high-flow applications, ensuring smooth operation and control over wide piping networks
Heavy-Duty Construction: Built from premium-grade materials tailored to your application’s needs for superior longevity
Leak-Free Performance: Equipped with advanced sealing technology ensuring minimal to zero leakage even under challenging conditions