Wilden 1.5 Inch Plastic Diaphragm Pump

Wilden Champ 1.5 Inch Plastic Air-Operated Double Diaphragm Pump with ANSI Flanges.

This rugged, chemical-compatible AODD pump is ideal for transferring acids, caustics, solvents, slurries, and other aggressive fluids in industrial, chemical, or process applications.
Key Features & Specs:

Model: Wilden Champ (M4 series plastic clamped design)
Size: 38 mm / 1.5\"  inlet/outlet
Material: Plastic wetted path (Polypropylene or PVDF construction for excellent corrosion resistance)
Connections: ANSI flanged suction and discharge ports — perfect for easy bolted piping installation
Operation: Air-operated double diaphragm (AODD) — no electric motor required, safe for hazardous or explosive environments
Flow Capacity: Up to approximately 340–490 litres per minute (depending on air pressure, fluid viscosity, and configuration)
Simple clamped design for quick maintenance and diaphragm changes

This pump is self-priming, dry-run capable, and handles solids and abrasives well. The Wilden Champ line is known for durability and long service life in tough chemical pumping applications.
Condition: Used. No cracks or damage to housing apart from one bolt hole on foot has broken off. (Please see photos)

Applications:

Chemical processing and transfer
Wastewater and sump pumping
Tank unloading / loading
Plating and metal finishing solutions
pH adjustment and dosing systems

Unit tested with water and runs very well.