The Wilden Pump 4 Aluminium 112 Air Operated Double Diaphragm Transfer unit is designed for reliable, efficient movement of fluids in demanding industrial environments. This corrosion-resistant variant suits applications where metal compatibility and lightweight construction are critical.
Engineered around dual diaphragm chambers powered by compressed air, the Wilden Pump 4 Aluminium 112 Air Operated Double Diaphragm Transfer minimizes shear sensitivity and handles abrasive or viscous media without requiring electrical power at the point of use.
Technical Specifications at a Glance
Key performance and mechanical attributes of the Wilden Pump 4 Aluminium 112 Air Operated Double Diaphragm Transfer are summarized below for quick reference.
| Specification | Parameter | Typical Value | Notes |
|---|---|---|---|
| Model | Series | Wilden Pump 4 Aluminium 112 | Aluminium body, 112 size class |
| Operating Principle | Drive Type | Air Operated Double Diaphragm (AODD) | Uses compressed air to alternate diaphragm strokes |
| Port Size | Inlet / Outlet | 1 1/2 inch | Optimized for moderate flow requirements |
| Max Differential Pressure | Operating Pressure | 120 psi | Suitable for standard plant air systems |
| Flow Capacity | Max Capacity | Up to 45 GPM | Variance based on media viscosity and air supply |
| Material of Construction | Body / Diaphragm Options | Aluminium with PTFE or EPDM elastomers | Chosen for light weight and chemical resistance |
How Air Operated Double Diaphragm Transfer Works
In the Wilden Pump 4 Aluminium 112 Air Operated Double Diaphragm Transfer, pressurized air alternates two interconnected diaphragms. This motion creates suction and discharge strokes that move fluid through the system without mechanical seals that can leak.
Each chamber cycle draws media into the pump and expels it through the discharge port, while internal valves ensure one-way flow. The aluminium construction keeps weight low while providing adequate strength for many process fluids.
Flow Rate and Pressure Capabilities
Performance figures for the Wilden Pump 4 Aluminium 112 Air Operated Double Diaphragm Transfer depend heavily on air pressure, supply volume, and media characteristics. Understanding these variables helps avoid under- or over-sizing in transfer applications.
- Rated flow reaches approximately 45 GPM with optimal air supply and low-viscosity fluids.
- Maximum operating differential pressure is 120 psi, covering most bulk transfer scenarios.
- Viscous or abrasive media may reduce flow; adjusting air pressure can partially compensate.
- Consistent air filtration and regulated pressure help maintain stable performance over time.
- Periodic inspection of diaphragms and valves prevents unexpected downtime.
Material Compatibility and Construction Benefits
The aluminium body of the Wilden Pump 4 Aluminium 112 offers a favorable strength-to-weight ratio and good compatibility with a wide range of non-corrosive fluids. Selecting appropriate diaphragm and valve elastomers ensures long service life in aggressive media.
Because the pump is air-driven, there is no risk of ignition in hazardous areas, making it suitable for many chemical and petrochemical environments. The design also tolerates some dry running and entrained gases better than many centrifugal alternatives.
Maintenance, Troubleshooting, and Operational Tips
Routine checks on air filters, regulator settings, and diaphragm condition help sustain efficiency and extend equipment life. Operators should verify that cycle rates remain within expected ranges and that no excessive vibration or unusual noise is developing.
Recommended Maintenance Practices
- Inspect diaphragms for cracks or swelling during scheduled shutdowns.
- Lubricate air distribution components only when manufacturer guidance permits.
- Clean inlet strainers and ensure air supply is free of contaminants.
- Monitor cycle frequency to detect early signs of wear or air leakage.
Reliability and Operational Highlights
Across numerous installations, the Wilden Pump 4 Aluminium 112 Air Operated Double Diaphragm Transfer has demonstrated dependable performance when matched correctly to the application. Understanding its operating limits and performing basic preventive maintenance maximizes uptime.
- Conserves energy by operating only when needed via air supply control.
- Handles shear-sensitive and foam-prone fluids gently.
- Simplifies plant design with minimal auxiliary equipment requirements.
- Provides inherent safety in hazardous locations due to non-electrical drive.
- Delivers consistent transfer accuracy with proper air regulation and maintenance.
FAQ
Reader questions
What types of fluids work best with the Wilden Pump 4 Aluminium 112 Air Operated Double Diaphragm Transfer?
This pump handles a wide range of fluids including water-based solutions, light oils, solvents, and many aggressive chemicals, provided the elastomers are selected for chemical compatibility. Abrasives with large particle sizes may require additional filtration.
How do I determine the correct air pressure and supply for stable operation? Start with the manufacturer’s recommended air pressure range, typically around 5–8 bar, and adjust while monitoring flow and cycle rate. Ensure the air compressor can deliver sufficient volume without significant pressure drop during peak demand. Can this pump be used in potentially explosive atmospheres?
Yes, because the drive is purely air-powered with no electrical components in the fluid path, the Wilden Pump 4 Aluminium 112 is well-suited for ATEX and similar hazardous area applications when installed per guidelines.
What are the common signs that diaphragms or valves need replacement?
Reduced flow, inconsistent cycling, visible diaphragm deformation, or higher air consumption than normal often indicate wear. A drop in discharge pressure without a corresponding reduction in air supply is another typical indicator.