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Help CenterMACNAUGHT Double Diaphragm Pump DDP50 Heavy Duty Industrial Fluid Conveying Pump
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Welcome to Rossonix Co., Limited, your trusted partner in industrial fluid handling solutions. Since 2011, we have been supplying high-quality pumps to global markets, with an annual export value of US$5–10 million. Our MACNAUGHT Double Diaphragm Pump DDP50 is a heavy-duty industrial fluid conveying pump designed for reliable performance in demanding environments. Whether you need to transfer water, oil, chemicals, or slurries, this pump delivers consistent flow with minimal maintenance. Backed by our ISO9001/ISO9000 certified quality management system, the DDP50 ensures durability and efficiency for your operations.
The MACNAUGHT DDP50 is an air-operated double diaphragm (AODD) pump, engineered to handle a wide range of fluids with viscosities from low to medium. Its robust construction and simple design make it ideal for industrial applications such as chemical processing, paint transfer, wastewater treatment, and oil & gas. The pump features a self-priming capability, can run dry without damage, and offers variable flow control by adjusting air pressure. Below are the key technical specifications:
| Specification | Value |
| Model | MACNAUGHT DDP50 |
| Pump Type | Double Diaphragm (AODD) |
| Max Flow Rate | 50 L/min (13.2 GPM) |
| Max Working Pressure | 8 bar (116 psi) |
| Inlet/Outlet Size | 1 inch BSP/NPT |
| Air Connection | 1/4 inch BSP |
| Max Solids Passage | 3 mm (0.12 inch) |
| Weight | Approx. 15 kg (33 lbs) |
Key Features & Benefits:
Heavy-Duty Construction: Made from high-strength aluminum or stainless steel, the pump withstands harsh industrial environments and resists corrosion.
Air-Operated Design: No electrical components, making it safe for use in explosive or flammable atmospheres. Ideal for mining, chemical plants, and oil refineries.
Self-Priming & Dry-Run Capable: The DDP50 can prime itself up to 5 meters and run dry indefinitely without damage, reducing downtime.
Variable Flow Control: Adjust air pressure to regulate flow rate from 0 to 50 L/min, providing precise control for different applications.
Easy Maintenance: Simple diaphragm replacement with no special tools required. The modular design allows quick access to check valves and diaphragms.
Versatile Fluid Handling: Compatible with water, oils, solvents, mild chemicals, and abrasive slurries (up to 3 mm solids).
Low Noise & Smooth Operation: The pneumatic system reduces vibration and noise compared to electric pumps, creating a better working environment.
At Rossonix, we understand that reliability is critical for your production line. That's why the MACNAUGHT DDP50 is backed by years of engineering expertise and a global supply chain. Our overseas office in Europe and main ports of shipment (Shenzhen, Hong Kong) ensure fast delivery to North America, South America, Eastern Europe, Oceania, the Middle East, and Asia. We have served over 50 countries and maintain a 98% on-time delivery rate. Our team of 11–50 professionals provides technical support and after-sales service to guarantee your satisfaction.
Why Choose Rossonix for Your Fluid Pumping Needs?
Established in 2011 with a strong track record in industrial exports.
ISO9001/ISO9000 certified quality management system applied to our product sourcing and inspection.
Annual export value of US$5–10 million, indicating high volume and trust from global buyers.
Flexible customization: pump materials, connection types, and accessories are available upon request.
Competitive pricing with factory-direct cooperation from reliable manufacturers.
Contact us today to request a quote or technical datasheet. Our sales engineers are ready to help you select the right pump for your specific application.
Frequently Asked Questions (FAQ)
Q1: What fluids can the DDP50 pump handle?
A: The DDP50 is suitable for water, oil, mild chemicals, solvents, paints, and slurries with solids up to 3 mm. For aggressive chemicals, please confirm compatibility with our technical team.
Q2: Is the pump self-priming? What is the maximum suction lift?
A: Yes, the pump is self-priming with a maximum suction lift of 5 meters (16.4 feet) dry, and up to 7.6 meters (25 feet) wet. It can run dry without damage.
Q3: What is the required air supply for this pump?
A: The pump requires clean, dry compressed air at 1.5–8 bar (22–116 psi). The air consumption is approximately 0.3–1.5 m³/min depending on load.
Q4: Can I use the pump for food-grade applications?
A: The standard model is not food-grade. However, we can provide a version with FDA-compliant materials upon request. Please contact us for details.
Q5: How often do I need to replace the diaphragms?
A: Diaphragm life depends on the fluid and operating conditions. Typically, they last 6–12 months under normal use. We recommend regular inspection every 3 months.
Q6: What is the warranty period?
A: We offer a standard 12-month warranty from the date of shipment, covering manufacturing defects. Extended warranty options are available upon negotiation.
Q7: Do you provide a user manual and spare parts list?
A: Yes, each pump comes with a comprehensive user manual, exploded view diagram, and a list of recommended spare parts (diaphragms, check valves, gaskets).
Q8: Can I customize the pump inlet/outlet size or material?
A: Yes, customization is available. Options include stainless steel 316, PTFE diaphragms, and different port sizes (e.g., 3/4 inch, 1.5 inch). Please inquire with your requirements.
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