F4 Gate Valve

Features:

* Bolted Bonnet 

* Replaceable O-ring 

* Rubber encapsulated wedge, Brass Wege Nut

* Fusion bonded epoxy coated inside and outside, blue RAL 5005, 250 Micron thick

* Working pressure from -1 to +16 Bar and working temperature from -10 to +80 ºC

The F4 gate valve is a key type of valve in industrial pipeline systems, combining corrosion resistance with shut-off functionality. Its core advantage lies in the use of polytetrafluoroethylene as the sealing surface or lining material, thus performing excellently in environments with highly corrosive media.

Main Content

F4 Gate Valve is a type of gate valve that uses polytetrafluoroethylene (PTFE) as the main material or lining material, commonly used in pipeline systems with high corrosion resistance requirements. Here is a detailed introduction:

Working Principle:

The opening and closing component of a gate valve is the gate, which moves perpendicular to the direction of fluid flow. By rotating the handwheel, the valve stem is driven to rise or fall, thereby opening or closing the gate to cut off or connect the medium in the pipeline. Gate valves can only be fully open or fully closed, and cannot be used for regulation or throttling.

Performance Characteristics:

Strong Corrosion Resistance: F4 material exhibits excellent chemical stability and can withstand various corrosive media, including strong acids, strong alkalis, and strong oxidants.

Low Fluid Resistance: When fully open, the gate valve has a straight flow channel, resulting in minimal pressure loss during medium flow. The direction of the medium is not restricted, with no turbulence or pressure reduction.

Good Sealing Performance: It can achieve self-sealing through medium pressure or forced sealing with external force. Some products also adopt surfacing valve seats or elastic sealing designs to ensure sealing reliability under harsh working conditions.

Labor-Saving Operation: Compared with some other types of valves, the opening and closing process is relatively labor-saving. It can be equipped with various driving methods such as manual, electric, and pneumatic, making operation convenient.

Classification:

According to the configuration of the sealing surface, it can be divided into wedge gate valves and parallel gate valves. Wedge gate valves can be further subdivided into single-gate, double-gate, and elastic gate types; parallel gate valves can be divided into single-gate and double-gate types. According to the position of the valve stem thread, it can be divided into rising stem gate valves and non-rising stem gate valves.

Application Fields:

Widely used in the chemical industry, thermal power generation, pharmaceutical, food, and other industries. It can be used in various pipelines for oils, water, steam, acid-alkaline media, to cut off or connect the medium in the pipeline.

In summary, F4 gate valves, with the corrosion resistance of F4 material and the structural advantages of gate valves, play an irreplaceable role in corrosive working conditions. Correct selection, installation, and maintenance of F4 gate valves can effectively ensure the safe and stable operation of pipeline systems and extend the service life of equipment.