Description
The Wilden® P4 is a 38 mm (1-1/2″”) Pro-Flo® Series clamped plastic AODD pump designed for simple, rugged, and reliable chemical applications. Clamped construction allows the pump to be fully disassembled and reassembled with a single tool, minimising maintenance costs. Proven through decades of performance, it delivers efficient, mid-range fluid transfer.
Features
- Clamped construction for fast, single-tool maintenance and quick serviceability
- DIN and ANSI flanged inlet and discharge liquid connections
- Rotatable inlet and discharge for installation flexibility
- Four diaphragm options: Rubber, TPE, Full-Stroke PTFE, Reduced-Stroke PTFE
- Lube-free, self-priming operation; no mechanical seals
- Run-dry capable without damage
- Solids passage up to 4.8 mm (3/16″”)
- High suction lift capability across all diaphragm options
- Low cost with simple installation
- Air chamber available in multiple materials including Halar-coated aluminium and stainless steel
Performance
- Rubber: Max flow 348 lpm (92 gpm); suction lift 4.88 m (16′) dry / 7.92 m (26′) wet; displacement 1.19 L (0.314 gal) per stroke
- TPE: Max flow 354 lpm (94 gpm); suction lift 3.96 m (13′) dry / 7.92 m (26′) wet; displacement 1.18 L (0.311 gal) per stroke
- Full-Stroke PTFE: Max flow 352 lpm (92.9 gpm); suction lift 4.7 m (15.3′) dry / 9.3 m (30.6′) wet; displacement 1.0 L (0.27 gal) per stroke
- Reduced-Stroke PTFE: Max flow 261 lpm (69 gpm); suction lift 3.05 m (10′) dry / 7.47 m (24.5′) wet; displacement 0.53 L (0.139 gal) per stroke
Applications
- Chemical transfer and dosing
- Paints, coatings, inks, and dyes
- Mining and mineral processing
- Pharmaceutical and specialty chemical processes
- Water and wastewater treatment
- Oil and gas and industrial process fluid handling
- Electroplating and surface treatment






