Soft sealed fixed ball valves and hard sealed fixed ball valves are two common types of ball valves, which differ in structure, performance and application scenarios.

Soft seal fixed ball valve

Structural features:

Compact structure, small size, light weight.

The sealing ring can be replaced or repaired and has a bi-directional elastic sealing function.

Performance characteristics:

Reliable seal, stable, long service life.

Easy to operate and flexible, wide range of application.

Suitable for low pressure, low temperature, corrosive media environment.

Application scenario:

It is commonly used in pipeline systems in petroleum, chemical, pharmaceutical, paper and other industries as a cutting medium.

Especially suitable for water, oil, natural gas, sea water and other media control.

Hard seal fixed ball valve

Structural features:

The sealing ball and seat are metal, usually made of stainless steel and copper.

The machining precision is high, and continuous grinding is needed to achieve the sealing effect.

Performance characteristics:

Wear resistance, high pressure resistance, high temperature resistance.

The sealing performance is good, but the price is relatively high.

Suitable for high temperature, high pressure, strong wear medium environment.

Application scenario:

Commonly used in petrochemical, electric power, metallurgy and other industrial fields.

It is especially suitable for media containing solid particles, with wear or temperatures higher than 200 degrees.