The classification and compilation of ball valve models are mainly based on a series of standardized parameters, which together constitute the model identification of the ball valve for easy identification, purchase and use. The following is a detailed explanation of the ball valve model differentiation and compilation method: 

 I. Basic composition of the ball valve model 

 The ball valve model is usually composed of multiple parameters, including but not limited to: valve type, connection mode, material, nominal diameter, nominal pressure, operation mode, etc. Through the combination of these parameters, the only model of a ball valve can be determined. 

 II. Specific parameters of the ball valve model 

 1. Valve type: 

 There are various structural types of ball valves, such as full-pass ball valve, straight-through ball valve, three-way ball valve, four-way ball valve, etc. These types are usually represented by the letter Q, followed by specific numbers or letters to represent the specific types. For example, Q41F means a full-through ball valve. 

 2. Connection method: 

 The connection methods of the ball valve include thread connection, flange connection, clamp connection, welding connection, etc. These connection methods are usually represented by specific letters in the model, such as P for flange connection, G for thread connection, C for clip connection, etc. 

 3. Material: 

 The material of the ball valve has an important impact on its performance and use. Common materials include stainless steel, carbon steel, cast iron, copper, etc. The material is usually represented by a combination of letters and numbers in the model, such as S for stainless steel and WCB for carbon steel. 

 4. Nominal diameter (DN): 

 The nominal diameter of the ball valve is an important parameter for the size of the valve. It usually uses standard international size standards, such as DN15, DN50, DN100, etc. This parameter directly indicates the diameter of the ball valve in the model. 

 5. Nominal pressure (PN): 

 The nominal pressure of the ball valve is an important parameter indicating the pressure-bearing capacity of the valve. It usually uses standard international pressure grade standards, such as PN10, PN16, PN25, etc. This parameter is used to distinguish ball valves with different pressure bearing capacity in the model. 

 6. Operation mode: 

 The ball valve is operated in manual, pneumatic, electric and so on. These modes of operation are usually represented by specific letters or numbers in the model for differentiation. 

 III. Preparation method of ball valve model 

 The preparation method of ball valve models usually follows certain industry standards and specifications to ensure the accuracy and versatility of the models. In the preparation process, it is necessary to combine and mark the ball valve according to the actual parameters and use, according to the prescribed format and rules. 

 IV. Examples 

 Take a certain type of stainless steel flange ball valve as an example, its model may be "Q41F-16P DN100". In this model: 

 • Q41F means full ball valve; 

 • 16P means that the nominal pressure is PN16 and the material is stainless steel (P here may indicate a specific material or standard of stainless steel); 

 • DN100 means that the nominal diameter is 100mm. 

 V. Summary 

 The distinction and compilation of ball valve models are based on the combination and identification of a series of standardized parameters. By understanding the meaning and preparation method of these parameters, ball valves can be easily identified, purchased and used. In practical application, it is also necessary to select the appropriate ball valve model and parameters according to specific needs and scenarios.