To determine the class of your Double Flange Concentric Butterfly Valve, you will need to refer to the manufacturer’s specifications or documentation that came with the valve.

The class of a valve refers to its pressure rating, which determines the maximum pressure that the valve can withstand before it fails. Double Flange Concentric Butterfly Valves are typically designed and rated according to industry standards such as ANSI (American National Standards Institute) or ISO (International Organization for Standardization).

The pressure rating, or class, of the valve is usually indicated by a numerical value, such as Class 150, Class 300, Class 600, and so on. This value is determined based on the valve’s size, materials, design, and performance characteristics, and it is important to ensure that the valve’s pressure rating is appropriate for the intended application.

If you are unable to locate the class rating of your Double Flange Concentric Butterfly Valve in the manufacturer’s documentation, you may need to contact the manufacturer or a qualified valve supplier for assistance.

How do you identify a Double Flange Concentric Butterfly Valve?

A Double Flange Concentric Butterfly Valve is a type of valve that is designed to control the flow of fluids or gases in a piping system. China Double Flange Concentric Butterfly Valve manufacturer It is called “double flange” because it has flanges on both sides of the valve body, and “concentric” because the valve disc is centered within the valve body and its axis of rotation is aligned with the centerline of the valve bore.

To identify a Double Flange Concentric Butterfly Valve, you can look for the following characteristics:

1. Valve body: The valve body of a Double Flange Concentric Butterfly Valve is usually made of cast iron, ductile iron, carbon steel, or stainless steel, and it has a circular shape with two flanges bolted to either end.
2. Disc: The valve disc is the component that rotates within the valve body to control the flow of fluid or gas. In a Double Flange Concentric Butterfly Valve, the disc is centered within the valve body and has a circular shape with a flattened profile.
3. Stem: The valve stem is the component that connects the valve disc to the actuator or operator. In a Double Flange Concentric Butterfly Valve, the stem is centered within the valve body and extends through the top of the valve.
4. Seat: The valve seat is the component that provides a seal between the valve disc and the valve body. In a Double Flange Concentric Butterfly Valve, the seat is usually made of an elastomeric material such as EPDM or Buna-N, and it is located on the inner surface of the valve body.
5. Actuator or operator: The actuator or operator is the component that controls the rotation of the valve disc. In a Double Flange Concentric Butterfly Valve, the actuator or operator can be manual, electric, pneumatic, or hydraulic.

By examining these characteristics, you should be able to identify whether a valve is a Double Flange Concentric Butterfly Valve or not. However, it is always best to refer to the manufacturer’s documentation or consult a qualified valve supplier for confirmation.