Learn Everything about the Seat Structure Evaluation of PTFE Lined Ball Valves

In manufacturing plants in diverse industries, the usage of different types of valves is common. However, the popularity and usefulness of lined ball valves coated with PTFE are unmatched. These valves are well known for their quick opening and offering a firm closure on excessively tough to hold fluids. The lined ball valve is a quite inexpensive alternative to all other valve varieties.

The ultimate function of these PTFE lined ball valves is to create a connection or disconnect the fluid section in the pipe. The operating principle for this particular type of valve depends on the actuating device on the stem of the valve. It is instrumental in rotating the ball so as to bring an end to the opening or closing.

Sealing Theory of Lined Ball Valve Seat

The lined ball valve seat’s sealing method varies due to varying structures. Every reputed manufacturer resorts to soft-sealing and hard sealing theories while composing valve seats.

Soft-Sealing Valve Seat

The sealing property boasts varying structures and features. The soft-sealing valve seat is composed of elastic type, special structure method, or plunger style. The realisation of the typical valve seat regarding the sealing occurs via the elastic-plastic distortion of the substance of the valve seat under the pre-tightening force’s effect or pressure of the fluid.

The efficacy of sealing entirely relies on the potential between the ball’s circular degree and the clearness on the surface under the fluid pressure or force. Thus, there has to be a fairly large seal pressure between the ball and valve seat.

The elastic seat valve is a different structure. Changes in certain environmental conditions such as pressure, temperature, and corrosion are responsible for the lined ball valve sealing property effect. Using an elastic tool like spring can help minimise the aforementioned effect. It is attainable because the spring distorts under the pressure of the fluid passing through a pipe or the pre-tightening thrust.

Hard-Sealing Valve Seat

There are a host of structures when it comes to the hard sealing valve seat. Some structures are multiple-level style, rotating type, and hollow pipe style. Another style is there known as bulk surfacing. The noteworthy characteristic of the rotating seating valve is that the seat rotates along the axis line when the valve remains closed. It means the creation of a robust alley on the metal surface, and therefore the seat features an adjustable tailstock, which effectively reduces corrosion of the sealing surface.

The selection of the sealing material for a PTFE line ball valve seat is of paramount importance to ensure excellent sealing. The premium quality polymer type and the metal variety are the two crucial things for sealing the seat. Ensure you reach out to the best PTFE lined ball valves manufacturer, Aria 4Matic Global Valve Automation if you need top-grade PTFE-coated lined ball valves.

Final Thoughts

It is essential to take certain vital things into account when choosing the sealing component. Some of the most crucial factors are low resistance coefficient, resistance to aging, and corrosion and firmness.

Aira 4Matic Global Valve is an ISO 9001:2015 company, manufacturers and exporter of PTFE lined plug valves in India. Company’s manufacturing unit is established in Ahmedabad. We are offering PFA lined butterfly valves, PTFE lined ball valves and weir diaphragm valves.