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Butterfly valves for oil and gas applications therefore need to be rugged, heavy-duty and fit for purpose. Triple-offset butterfly valve for oil and gas applications Due to their heavy-duty nature and ability to withstand demanding conditions, triple offset valves (TOVs) are the most efficient solution for critical and non-critical upstream oil and gas applications that require positive isolation.
Butterfly valve body: Butterfly valves generally have bodies that fit between two pipe flanges, the most common being lug and wafer body design. Butterfly valve disk: The disk is how the valve stops flow – it is equivalent to a plug in a plug valve, a gate in a gate valve or a ball in a ball valve.
Bray is the global leader in butterfly valve and actuator manufacture for water filtration. Their valves feature three disc-to-stem connections: Double ‘D’, Splined, and Double Key. These internal non-wetted connections eliminate typically exposed external disc-to-stem connections, such as screws or taper pins.
A Triple Offset Butterfly Valve has 3 separate offsets. Two of the offsets apply to the location of the shaft in respect to the centerline of the bore and the centerline of the disc/seat sealing surfaces. The third offset is the design in the axis of the seat cone angle.
Johnson Valves’ JV100006 seawater butterfly valve boasts an aluminium bronze body and disc with an NBR liner, making it an effective solution for marine applications. Suitable for an operational pressure range up to 16 bar and a temperature range of between -25°C and +100°C, this butterfly valve offers quick opening and closing with full flow in either direction and leak-tight shut off.
For butterfly valve construction, carbon steel is most often used to form the body and disc of the valve using the sand casting process. Carbon steels are available in several different grades. The most common grades used for valve bodies and discs are cast grades ASTM A216 WCB (Weldable Cast B-grade) and LCC (Low Carbon Content) steels.
Butterfly valve types. There is an array of different butterfly valve types, each with their own unique features and benefits. They are defined by the orientation of the stem to the disc and the seating angle that the disc closes on. The most basic version is known as a concentric or resilient-seated butterfly valve.
Butterfly Valve. Butterfly Valve (2) 1) FIG.1 & 2 (1) 2) FIG.239, 139, 129 (1) 장점 및 설치방법 (1 ...
Butterfly valve types. There is an array of different butterfly valve types, each with their own unique features and benefits. They are defined by the orientation of the stem to the disc and the seating angle that the disc closes on. The most basic version is known as a concentric or resilient-seated butterfly valve.
Butterfly valves are seen as a lightweight and cheaper alternative to many other valve types, including ball valves. The primary use for a Butterfly valve is as a shut-off valve, but they are also good for use as a fluid flow control valve in wastewater treatment, agricultural, and water applications.
