The IVR model Butterfly dampers, offered by Intervalve India are essentially seatless Butterfly valves intended for low pressure gas lines and air lines. The lightweight construction with the narrow wafer body enables easy fitment of these valves in ducts, manifolds and exhaust lines without additional support or strengthening of pipe lines.

IVR valves are primarily intended for low – pressure large volume gas / air flow control applications. The absence of seat substantially reduces the valve operating torque requirements and makes the valve very effective for flow control / regulation duties. IVR is an ideal choice for furnace air flow and combustion control applications.

Comfomity to code & standards

Actuator mounting bracket Valve Inspection & Testing Flange standard conformity
ISO 5211 Part II API 598/ ANSI / FCI : 70-2 (Class II ) ANSI 150, DIN PN 6 /10, BS 10 Table D

Technical specifications

Construction & Type => Centric Disc, Seatless Butterfly damper
Body type => Narrow wafer single piece
End Connection => Wafer, sandwiched between flanges
Size range => 40 NB to 1200 NB
Maximum operating pressure => -250 C to 6000 C (depending on MOC)
Operating temperature range => Table
Operation => Manual or actuated with Pneumatic / Electric actuator
Standard Material of Construction (MOC)Body
=> WCB / CF8 / CF8M
CS-IS 2062 / SS 304 / SS 316
AISI 410 / SS 316 SH
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