Importers and users are sometimes confused to choose correct type of brass ball valves when they buy or import brass ball valves from China. In this article, we will share how the brass ball valves are classified and how is the difference between the types, which will help you to understand and select correct types of brass ball valves.
1. According to the pressure
According to the pressure, brass ball valves can be divided into:
1). Low pressure brass ball valves: (nominal pressure) ≤1.6MPa
2). Medium pressure brass ball valves: (nominal pressure) 2.5~6.4MPa
3). High pressure brass ball valves: (nominal pressure) 10~80MPa
4). Ultra high pressure brass ball valves: (nominal pressure) ≥100MPa
we mainly produce medium and low pressure brass ball valve, the marking on the valve body is ten multiples of Mpa, for example: PN10 equals 1MPa
2. According to functions
According to functions, brass ball valves can be divided into:
1). Straight brass ball valves
2). Angle brass ball valves
3). Three-way brass ball valves
4). Brass mini ball valves
3. According to the working temperature
According to the working temperature of the medium, brass ball valves can be divided into:
1). Ultra-low temperature
2). Low temperature -100℃~ -40℃
3). Normal temperature -40℃~120℃
4). Medium temperature 120℃~450℃
5). High temperature>450℃
we mainly produce normal temperature brass ball valves.
4. According to the flow medium
According to the flow medium, brass ball valves can be divided into:
1). water brass ball valve
2). oil brass ball valve
3). gas brass ball valve
We currently produce civil use water ball valves and civil used gas ball valves. Gas valves are generally requires EN331.
5. According to the stem structure
According to the stem structure, brass ball valves can be divided into:
1). O-ring structure brass ball valves
2). Packing-gland structure brass ball valves
O-ring structure brass ball valves: specifically refers to the seal on the stem is sealed with a black rubber seal; the advantage of this structure is that the assembly procedure at the stem is relatively simple; the cost is relatively low; the disadvantage is that it is not repairable and has a low operating temperature range , Prone to aging.
Packing-gland structure brass ball valves: It specifically refers to the valve stem seal using PTFE plastic king seal; the advantages and disadvantages of this structure are opposite to the O-ring structure, and it is safer and can be applied to relatively high pressure environments.
6. According to the end connections
6. According to the end connections, brass ball valves can be divided into:
1) Threaded connection brass ball valves
2) Compression connection brass ball valves
3) Flange connection brass ball valves
4) Welding /soldering brass ball valves
5) Hose connection brass ball valves
The bottom line
Here is the end of types and classifications of brass ball valves, and now you know there are 6 categories to select brass ball valves, hope it will help you to understand and select correct types of brass ball valves.
You're also welcome to contact us for more details concerning brass ball valves.
4. According to the flow medium
According to the flow medium, brass ball valves can be divided into:
1). water brass ball valve
2). oil brass ball valve
3). gas brass ball valve
We currently produce civil use water ball valves and civil used gas ball valves. Gas valves are generally requires EN331.
5. According to the stem structure
According to the stem structure, brass ball valves can be divided into:
1). O-ring structure brass ball valves
2). Packing-gland structure brass ball valves
O-ring structure brass ball valves: specifically refers to the seal on the stem is sealed with a black rubber seal; the advantage of this structure is that the assembly procedure at the stem is relatively simple; the cost is relatively low; the disadvantage is that it is not repairable and has a low operating temperature range , Prone to aging.
Packing-gland structure brass ball valves: It specifically refers to the valve stem seal using PTFE plastic king seal; the advantages and disadvantages of this structure are opposite to the O-ring structure, and it is safer and can be applied to relatively high pressure environments.
6. According to the end connections
6. According to the end connections, brass ball valves can be divided into:
1) Threaded connection brass ball valves
2) Compression connection brass ball valves
3) Flange connection brass ball valves
4) Welding /soldering brass ball valves
5) Hose connection brass ball valves
The bottom line
Here is the end of types and classifications of brass ball valves, and now you know there are 6 categories to select brass ball valves, hope it will help you to understand and select correct types of brass ball valves.
You're also welcome to contact us for more details concerning brass ball valves.
