In industrial piping systems, particularly those requiring automatic ON/OFF control and handling corrosive media, selecting the appropriate valve type plays an important role in ensuring the stability and operational reliability of the entire system. In addition to flow shut-off capability, the valve must have suitable materials for the process medium, reliable sealing construction, and the ability to integrate with the control system.

The Kaixin Pipeline Pneumatically Actuated Ball Valve is a ball valve equipped with a pneumatic actuator to perform valve opening and closing operations. According to the technical drawing provided, the valve body and wetted components use materials such as PVDF, PVC-C, and PTFE, while the product is available in sizes ranging from DN20 to DN250.

With its ball valve construction combined with a pneumatic actuator, the product can be used in systems requiring automated flow control, particularly where corrosion resistance and reliable sealing performance are important considerations.

1. Overview of the Kaixin Pipeline Pneumatic Ball Valve

The Kaixin Pipeline Pneumatically Actuated Ball Valve is a device used to shut off or open process media in a piping system through a ball operated by a pneumatic actuator.

Unlike manually operated valves, a pneumatic ball valve uses compressed air as the energy source to generate movement for the opening and closing mechanism. When an appropriate control signal is received, the actuator generates movement and transfers the force to the valve mechanism, thereby changing the position of the ball.

According to the product drawing, the valve features a flanged ball valve design, in which the piping system is connected to both ends of the valve through flanges. This design facilitates valve installation, removal, and maintenance within the piping system.

One notable feature of the Kaixin Pipeline product is that the valve body is made of PVDF, while sealing components and other wetted parts use a combination of different materials. This material configuration makes the product suitable for systems where chemical compatibility is an important factor in valve selection.

2. Detailed Construction of the Kaixin Pipeline Ball Valve

The Kaixin Pipeline Pneumatically Actuated Ball Valve consists of multiple components that work together to perform flow shut-off/opening and sealing functions.

According to the technical drawing, the main identifiable components include:

• Valve body;
• Ball;
• Valve seat;
• Sealing gaskets;
• PTFE sealing components;
• Pneumatic actuator;
• Connection and fastening components.

Each component has its own material and function, forming a complete valve assembly.

2.1. PVDF Valve Body

The Valve Body is the main component that forms the flow passage and connects the valve to the piping system.

According to the material table in the drawing, the valve body is manufactured from PVDF.

PVDF is an engineering polymer commonly used in applications requiring corrosion resistance. In this product, PVDF is used for the valve body and certain major components associated with the flow passage.

The use of PVDF makes the valve suitable for systems where conventional metallic materials may not meet the required compatibility with the process medium.

However, when selecting a PVDF valve for a specific application, the type of medium, concentration, temperature, and actual operating conditions should be checked against the material compatibility requirements.

2.2. PVDF Ball

The Ball is the component responsible for opening and closing the flow passage.

According to the material table in the drawing, the ball is made of PVDF.

When the ball is rotated to the open position, the flow passage inside the ball is aligned with the pipeline, allowing the process medium to pass through the valve. When the ball is rotated to the closed position, the flow passage is moved to a position that blocks the flow.

The use of a PVDF ball provides material consistency with the valve body and flow-path components, while also supporting the intended application of the product in systems requiring corrosion resistance.

2.3. Valve Seat

The Valve Seat (Seal Seat) is positioned between the ball and the valve body and supports the sealing function when the valve is in the closed position.

According to the drawing, the valve seat material is specified as PVDF.

The valve seat plays an important role during valve closure because it is the contact area where the ball interacts with the sealing system to restrict the passage of process media when the valve is closed.

2.4. PTFE Gaskets and Sealing Components

The valve sealing system uses PTFE at certain locations according to the material table in the drawing.

PTFE is widely used in industrial applications due to its suitability for many chemical environments. In the Kaixin Pipeline valve, PTFE is used for the sealing components identified in the technical drawing.

The sealing system helps minimize leakage at connection points and around moving components of the valve.

When selecting a valve for a specific system, the valve body, ball, valve seat, and gasket materials should all be considered rather than selecting the valve based solely on the valve body material.

2.5. Pneumatic Actuator

The Pneumatic Actuator is the component that generates the force required to open and close the valve.

Compressed air is supplied to the actuator, generating mechanical movement that is then transferred to the valve mechanism.

With a pneumatic actuator, the valve opening and closing operation can be integrated into an automatic control system instead of requiring direct manual operation.

This feature is particularly useful in systems with a large number of valves or in locations where manual operation is inconvenient.

3. Operating Principle of the Pneumatic Ball Valve

The operating principle of the Kaixin Pipeline Pneumatically Actuated Ball Valve can be understood through the interaction between the compressed air supply, pneumatic actuator, and ball.

When the control system issues a command to change the valve position, compressed air is supplied to the pneumatic actuator. The actuator converts pneumatic energy into mechanical movement.

This movement is transferred to the valve mechanism, causing the ball to change position.

When the Valve is in the Open Position

The ball is positioned so that the flow passage through the ball is aligned with the pipeline. The process medium can therefore flow through the valve.

When the Valve is in the Closed Position

The ball rotates to a position that blocks the flow passage. In combination with the valve seat and sealing system, the valve restricts the passage of process media.

By using a pneumatic actuator, the valve can be remotely operated and integrated into the plant’s automation system.

4. Materials and Corrosion Resistance

One notable feature of the Kaixin Pipeline ball valve shown in the drawing is the use of engineering polymer materials for components exposed to the process medium.

The material table indicates the following main components:

Component	Material
Valve Body	PVDF + Steel
Ball	PVDF
Valve Seat	PVDF
Sealing Component	PVC-C
Ball	PVDF
Sealing Gasket	PTFE
Sealing Component	PTFE
Pneumatic Actuator	Alloy

PVDF

PVDF is used for several major flow-path components, including the valve body, ball, and valve seat.

This material is suitable for applications where corrosion resistance needs to be considered.

PVC-C

PVC-C is specified in the material table for one of the sealing components. This is a polymer material commonly used in piping systems and industrial equipment.

PTFE

PTFE is used for sealing components. This material plays an important role in supporting the valve’s sealing performance and is suitable for many applications requiring chemical compatibility.

However, the valve’s suitability for a specific chemical should not be determined solely based on the material name. Selection should be based on the actual process conditions, including chemical composition, concentration, temperature, and pressure conditions.

5. Technical Specifications of the Kaixin Pipeline Pneumatic Ball Valve

According to the dimensional table in the technical drawing, the valve is available in various sizes ranging from DN20 to DN250.

DN	D1 (mm)	D2 (mm)	D3 (mm)	L (mm)	h (mm)	Bolt Holes
20	100	69.9	19	120	16	4-Ø16
25	110	79.4	22	130	16	4-Ø16
32	115	88.9	27	145	18	4-Ø16
40	123	98.4	35	168	20	4-Ø16
50	148	120.7	44	180	20	4-Ø18
65	180	139.7	58	225	22	4-Ø18
80	190	152.4	65.5	255	23.5	8-Ø18
100	230	190.5	78	280	25	8-Ø18
125	244	216	97	357	30	8-Ø19
150	280	241	110	398	30	8-Ø23
200	331	299	140	400	35	8-Ø23
250	386	362	170	450	38	12-Ø25

Where:

• DN: Nominal valve size;
• D1, D2, D3: Diameter dimensions shown in the technical drawing;
• L: Valve face-to-face dimension;
• h: Dimension related to the flange connection section;
• n-Ø: Number and diameter of bolt holes.

The wide size range from DN20 to DN250 allows the valve to be selected for various pipeline sizes.

Note: The provided drawing mainly illustrates the product’s construction, materials, and geometric dimensions. Parameters such as maximum operating pressure, maximum operating temperature, flow capacity, and actuator torque are not fully specified in this document. Therefore, these parameters should be confirmed against the applicable datasheet/model before final selection.

6. Technical Advantages of the Kaixin Pipeline Pneumatically Actuated Ball Valve

6.1. Pneumatic Actuation

The use of a pneumatic actuator allows the valve to be integrated into an automatic control system.

Instead of requiring direct manual operation at the valve, the operator can control the valve through an appropriate control system.

6.2. PVDF Material for Flow-Path Components

PVDF is used for several components exposed to the process medium, including the valve body, ball, and valve seat, according to the technical drawing.

This is a notable advantage when the valve is used in systems where the corrosion resistance of the wetted materials needs to be considered.

6.3. PTFE Sealing

PTFE sealing components contribute to the valve’s sealing performance.

Selecting an appropriate gasket material for the process medium is an important factor in minimizing leakage during operation.

6.4. Flanged Connection

The valve is designed with a flanged connection, making it suitable for piping systems requiring flange connections.

This connection type also facilitates valve removal and installation when inspection or maintenance is required.

6.5. Multiple Available Sizes

The product is available in sizes ranging from DN20 to DN250, covering a wide range of industrial pipeline sizes.

7. Applications of the Kaixin Pipeline Pneumatic Ball Valve

With PVDF, PVC-C, and PTFE used for components associated with the process medium, the Kaixin Pipeline Pneumatically Actuated Ball Valve can be considered for systems requiring automatic flow control combined with material compatibility requirements.

Potential application groups may include:

Water Treatment Systems

The valve can be used in piping systems of water treatment plants where automatic control of flow paths is required.

Chemical Systems

PVDF and PTFE are materials that should be considered when designing piping systems handling chemical media. However, the compatibility of each material with the actual chemical must be verified before selection.

Pure Water Treatment Systems

The valve can be considered for water treatment and distribution systems where the material requirements and control method are compatible with the process.

Industrial Piping Systems

The pneumatic actuator allows the valve to be integrated into an automation system, making it suitable for processes requiring valve opening and closing according to control signals.

8. Selection Guide for the Kaixin Pipeline Pneumatic Ball Valve

Valve selection should not be based solely on pipeline size. Several important factors should be determined before selecting the valve, including:

8.1. Determine the DN Size

First, determine the pipeline size and select the corresponding valve DN.

Kaixin Pipeline provides sizes from DN20 to DN250 according to the supplied dimensional table.

8.2. Determine the Process Medium

The process medium passing through the valve should be clearly identified, such as water, chemicals, or other industrial solutions.

For corrosive media, the compatibility of PVDF, PVC-C, PTFE, and other materials with the specific process medium should be verified.

8.3. Check Operating Temperature and Pressure

Operating pressure and temperature are important parameters when selecting a valve.

Since the supplied document does not fully specify the pressure and temperature limits, these parameters should be confirmed with the manufacturer or the corresponding datasheet before ordering.

8.4. Determine the Control Requirements

It is necessary to determine whether the system requires:

• Automatic ON/OFF control;
• Remote control;
• Sequential control;
• Integration with a PLC or automation system.

The appropriate actuator configuration and control system can then be selected accordingly.

8.5. Check the Connection Type

The valve uses a flanged connection. Therefore, the flange standard and dimensions of the piping system should be checked to ensure compatibility during installation.

9. Installation, Operation, and Maintenance Considerations

To ensure stable operation of the pneumatically actuated ball valve, installation should be performed in accordance with the system’s technical requirements.

Inspect the Valve Before Installation

The external condition of the valve, pneumatic actuator, and connection points should be inspected before installation into the system.

Inspect the Piping

The piping system should be cleaned and free from foreign matter that could affect the ball or sealing system.

Check the Flange Connection

The flanges must be properly aligned before tightening the bolts. Excessive mechanical stress should not be imposed on the valve body during installation.

Check the Pneumatic System

The compressed air supply to the actuator must meet the requirements of the selected actuator configuration.

Check Opening and Closing Operation

After installation is completed, the valve opening and closing operation should be checked before the system is placed into normal operation.

Perform Periodic Maintenance

During operation, the following items should be inspected:

• Pneumatic actuator condition;
• Opening and closing performance;
• Connection points;
• Sealing condition;
• Signs of leakage;
• Abnormal conditions in the pneumatic system.

If leakage or abnormal valve operation is detected, the system should be stopped for inspection and the cause identified before operation is resumed.

10. Why Choose the Kaixin Pipeline Pneumatically Actuated Ball Valve?

The Kaixin Pipeline Pneumatically Actuated Ball Valve is a suitable solution for systems requiring a combination of automatic control and material selection compatible with the process medium.

Key features of the product include:

• Pneumatic actuator operation, suitable for integration into automation systems;
• PVDF valve body and ball according to the technical drawing;
• PVDF valve seat;
• PTFE sealing components;
• Flanged connection;
• DN20–DN250 size range;
• Can be considered for water treatment, chemical, and industrial piping systems depending on the process medium and operating conditions;
• Construction and dimensions are clearly illustrated in the technical drawing, facilitating product selection and system design.

In particular, when the valve is used in chemical systems, selecting the correct wetted materials is an important consideration. Therefore, the complete operating conditions should be evaluated rather than selecting the valve based solely on the DN size.

11. Conclusion

The Kaixin Pipeline Pneumatically Actuated Ball Valve is a ball valve equipped with a pneumatic actuator for flow opening and closing operations, intended for piping systems requiring automation, reliable sealing, and materials compatible with the process medium.

According to the technical drawing, the product uses PVDF for the valve body, ball, and valve seat, combined with PVC-C and PTFE for sealing-related components. The valve features a flanged connection and is available in sizes ranging from DN20 to DN250.

With pneumatic actuation, the valve can be integrated into automation systems, helping reduce manual operation and enabling flow control according to process requirements.

However, to properly select the appropriate Kaixin Pipeline Pneumatically Actuated Ball Valve model, it is necessary to consider pipeline size, process medium, pressure, temperature, materials, connection standard, and actuator requirements simultaneously. For parameters not specified in the supplied drawing, confirmation should be obtained from the applicable datasheet or the manufacturer’s specific configuration before making the final selection.