Ball valve classification

Functional classification

1. Bypass valve: The ball valve is generally opened by static water, so the bypass valve is first pressed, that is, both sides are filled with water;

2, air valve: when filling the water, remove the air to take the float to close the valve; when draining, add air, the float will drop by itself;

3. Pressure relief valve: When opening and closing the valve, the pressure water between the valve and the sealing cover is excluded to avoid wearing the sealing cover;

4. Drainage valve: discharges the sewage in the lower part of the ball housing.

Transmission classification

1, pneumatic ball valve

2, electric ball valve

3, hydraulic ball valve

4, gas-liquid ball valve

5, electro-hydraulic ball valve

6, turbine drive ball valve

Classification characteristics

Ball valves are divided into: floating ball valve, fixed ball valve, track ball valve, V ball valve, three-way ball valve, stainless steel ball

Valve floating ball valve

Valve floating ball valve

Valves, cast steel ball valves, forged steel ball valves, ash ball valves, anti-sulfur ball valves, pneumatic ball valves, electric ball valves, ferrule ball valves, welded ball valves.

According to the shell/body material classification, the ball valve can be divided into:

1. Metal material valves: such as carbon steel valves, alloy steel valves, stainless steel valves, cast iron valves, titanium alloy valves, Monel valves, copper alloy valves, aluminum alloy valves, lead alloy valves, etc.

2. Metal valve body lining valves: such as rubber-lined valves, fluorine-lined valves, lead-lined valves, lined plastic valves, lining enamel valves.

3. Non-metallic valve: such as ceramic valves, glass valves, plastic valves.

There are many manufacturers of ball valves in China, and the connection sizes are mostly not uniform. Mainly divided into the following major categories:

The ball of the ball valve is floating. Under the action of the medium pressure, the ball can generate a certain displacement and press on the sealing surface at the outlet end to ensure the sealing of the outlet end.