Acid Resistant Air Operated Diaphragm Pump

The pump body is available in PP polypropylene and PVDF materials, while key wetted components such as diaphragms, valves, and valve seats are manufactured with PTFE or fluororubber. This material combination provides reliable resistance against various inorganic acids, organic acids, acidic wastewater, and chemical solutions.

Driven by compressed air, the pump operates without electrical power, eliminating the risk of electric sparks in environments containing acidic vapors. Its wide flow channel design also allows certain particles and impurities to pass through, reducing blockage risks during chemical transfer.

Designed for Acid Corrosion Challenges

When handling acidic liquids, pump material selection directly affects service life and process safety.

The Acid Resistant Air Operated Diaphragm Pump uses a complete corrosion-resistant flow path:

• PP or PVDF pump body
• PTFE diaphragm
• PTFE ball valve and valve seat
• Fluororubber optional sealing components

This design prevents the pumped medium from contacting metal parts, avoiding corrosion-related leakage and metal ion contamination.

For industries such as electroplating and electronic chemical processing, where liquid purity is important, the non-metal contact structure helps maintain stable process quality.

PP or PVDF? Selecting the Right Material

Different chemical conditions require different material solutions.

PP Polypropylene Version

The PP model is suitable for general acidic applications where cost efficiency and corrosion resistance are the main considerations.

Typical applications include:

• Acidic wastewater transfer
• General chemical dosing
• Surface treatment processes
• Mild acid solutions

PVDF Version

PVDF provides stronger chemical resistance and temperature performance, making it suitable for more demanding applications.

Recommended for:

• Higher concentration acids
• Stronger corrosive chemicals
• Semiconductor cleaning processes
• Chemical production systems

Xiafeng can recommend suitable material combinations according to acid concentration, temperature, viscosity, and operating conditions.

Reliable Pneumatic Operation

Powered by compressed air, the pump can operate safely in environments where electrical equipment is unsuitable.

The pneumatic drive provides:

• No electrical spark risk
• Safe operation in hazardous areas
• Easy flow adjustment through air pressure control
• Flexible installation options

The self-priming capability allows the pump to be installed in different process layouts without additional priming equipment.

Technical Specifications

Key Performance Advantages

Full Corrosion Protection

All liquid-contact parts are selected for acid resistance, helping prevent corrosion damage and extending operating life.

Clean Fluid Transfer

The absence of metal contact reduces the risk of iron ion contamination, which is particularly important for electroplating and electronic chemical applications.

Particle Passing Capability

The diaphragm structure and wide flow channel design allow the transfer of liquids containing certain solid particles without frequent blockage.

Easy Maintenance

The modular structure allows convenient replacement of diaphragms, valves, and other wear components, reducing maintenance time.

Industrial Applications

Electroplating Industry

Used for transferring acidic solutions, plating chemicals, and surface treatment liquids where corrosion resistance is required.

Chemical Processing

Suitable for acid solutions, chemical additives, and corrosive production fluids.

Semiconductor Cleaning

PVDF models are commonly selected for applications requiring chemical compatibility and contamination control.

Wastewater Treatment

Handles acidic wastewater and chemical neutralization processes.

Metal Surface Treatment

Applied in pickling lines and cleaning systems involving acidic solutions.

FAQ

Q: How do I choose between PP and PVDF acid resistant diaphragm pumps?

A: The selection mainly depends on acid concentration, operating temperature, and chemical compatibility. PP is suitable for general acidic applications, while PVDF provides higher corrosion resistance and temperature capability for more demanding conditions.

Q: Can this pump handle concentrated sulfuric acid and hydrochloric acid?

A: The suitability depends on concentration, temperature, and operating conditions. PVDF and PTFE configurations are recommended for stronger corrosive media. Xiafeng can help select suitable materials according to specific chemical parameters.

Q: Why use a pneumatic diaphragm pump for acid transfer?

A: A pneumatic diaphragm pump does not require electrical power and avoids spark risks, making it suitable for chemical environments containing flammable or corrosive vapors.

Q: Will acid contact metal parts inside the pump?

A: No. The pump is designed with a non-metallic wetted flow path. The liquid-contact components use PP, PVDF, PTFE, or other corrosion-resistant materials to reduce metal corrosion risks.

Q: What industries commonly purchase acid resistant diaphragm pumps?

A: They are widely purchased by electroplating factories, chemical manufacturers, semiconductor companies, wastewater treatment contractors, and surface treatment equipment suppliers.

Q: Can Xiafeng customize the pump according to my chemical medium?

A: Yes. Customers can provide information such as chemical name, concentration, temperature, flow rate, and pressure requirements. Xiafeng can recommend suitable materials and configurations.