A BUTTERFLY VALVE is a valve that isolates or regulates the flow of a fluid. The closing mechanism is a disk that rotates. Operation is similar to that of a ball valve, which allows for quick shut off. BUTTERFLY VALVES are generally favored because they cost less than other valve designs, and are lighter weight so they need less support. The “butterfly” is a metal disc mounted on a rod. The disc is positioned in the center of the pipe. A rod passes through the disc to an actuator on the outside of the valve. Rotating the actuator turns the disc either parallel or perpendicular to the flow. Unlike a ball valve, the disc is always present within the flow, so it induces a pressure drop, even when open. Styles of BUTTERFLY VALVES on design parameters are Wafer-style, Lug-style, Rotary etc.,
JGV Types Of Butterfly Valves
There are different kinds of Butterfly Valves, each adapted for different pressures and different usage:
- Concentric Butterfly Valves – Have a resilient rubber seat with a metal disc.
- Double Offset (Eccentric or High Performance) Butterfly Valves – Have different type of materials is used for seat and disc.
- Triple Offset (Eccentric) Butterfly Valves – The seats are either laminated or solid metal seat design.
JGV offer quality approved range of Butterfly Valves as per prevailing Industry Standards and as well Client Specifications & Design in varied standard and high grade raw material, to attain maximum level of client satisfaction
JGV Butterfly Valve Range & Specification
| Size | : | 40 mm (1-1/2″) – 1000 mm (40″) |
| Body & Type | : | Bi-Directional, Moulded Liner / Seat, Metal Seated (AWWA C504c), Double Eccentric, Triple Eccentric, Split Body, Rubber / Teflon Lining. |
| Operation | : | Lever, Gear, Actuator (Pneumatic, Electrical) |
| Design Standard | : | BS EN 593 / BS 5155 / API 609, Face to Face Dimensions to BS EN 593 / API 609, Wafer – ANSI B 16.5 |
| Pressure Rating | : | PN 10, PN 16, 150 #, 300 # |
| Testing Standard | : | BS EN 12266-1 (BS 6755-Part 1) / API 598 |
| End Connection | : | Wafer Type, Lugged Type, Flanged. |
| Material Of Construction | : | Standard – WCB, CF8, CF8M, CF3, CF3M, Cast Iron On Request – CN7M, CF8C, Duplex Gr. 4A, Super Duplex Gr.5A / 6A , Nickel Alloy, Monel, Hastelloy, Inconel, SS 904L etc. |
| Trim | : | SS 410, SS 304, SS 316, SS 304L, SS316L, Gun Metal, Monel |
| Customization (On Request) | : |
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General Applications:
BUTTERFLY VALVES are compact in design requires considerably less space, compared to gate, globe, or other valves, Light in weight, Quick acting; as a quarter-turn valve, it requires less time to open or close, It is available in large sizes, They have low-pressure drop and high-pressure recovery and provide bubble-tight service. These are mainly used in:
- Cooling & Circulating of Water, Air, Gases etc.
- In Service Industry such as Fire Protection Services, Vacuum Service, Slurry & Corrosive Services, High Pressure & Temperature Service, Throttling Services etc.
- In Process Industry such as Food, Chemical and Pharmaceutical etc.