When looking for a simple way to redirect the direction of the flow of gases, compressed air or fluids in a pipe, one of the most common methods is to install a 3 way ball valve. It simply requires a single turn of the handle to change the direction of the flow – sending it from one port to another one. This same type of valve can also handle the contents of two pipes, redirecting them into a single one. Alternatively, 3 way ball valves can prevent any flow from passing through that section of pipe.
Materials: Body, Seats and Seals
The three major parts of the ball valve are the valve body, spherical plug, and seats. The material comprising 3-way ball valves depends upon the function and application. In general, however, except for the seat, common materials for this valve are:
- Brass
- Bronze
- Carbon Steel
- PVC
- Stainless steel
For the ball valve, the best and common material produces soft seats. Examples of this include:
- Delrin
- Fluorinated polymers
- Nylon
- Synthetic rubbers
This imparts to the valve outstanding sealing ability. In particular, the employment of fluorinated-polymer seats allows the use of high temperatures ranging from 450 to 500 F.
However, seat materials for a 3 way ball valve can also be of graphite and metal. The former permits higher service temperatures – up to 1000 F. The latter is best for fireproof applications.
As for seals, the choices include:
- EPDM
- PTFE
- TFM
- Viton
In addition to types of valves, e.g., L-Port, T-Port, companies and manufacturers need to consider the qualities each material imparts when considering the specific application.
The 3 Way Ball Valve
Choosing the right valve for an application involves considering diverse factors. Companies consider a 3 way ball valve when it becomes necessary to redirect the flow of gases or fluids under specific conditions and circumstances. Always look at the material before selecting the valve. This will help to ensure the best performance possible.
