Product Description
Wilden P4 Clamped Plastic Pump for Chemical Transfer
The Wilden P4 Clamped Plastic Pump is a 38 mm (1½-inch) air-operated double-diaphragm pump designed for chemical transfer and demanding industrial applications. Its polypropylene or PVDF wetted housing provides corrosion resistance for many compatible process liquids.
Moreover, the clamp-band construction gives technicians rapid access to internal components. Consequently, this plastic AODD pump combines dependable fluid handling with straightforward inspection and maintenance.
Wilden P4 Pump Flow and Pressure
Maximum published flow varies according to the selected diaphragm:
- Rubber: Up to 348 lpm
- TPE: Up to 354 lpm
- Full-Stroke PTFE: Up to 352 lpm
- Reduced-Stroke PTFE: Up to 261 lpm
Maximum discharge pressure reaches 8.6 bar or 125 psi.
However, actual output depends on compressed-air volume, discharge pressure, liquid viscosity, suction conditions and system resistance. Therefore, users should select the P4 diaphragm pump from its performance curve rather than relying only on the maximum flow figure.
Key Features and Benefits
The Wilden Pro-Flo plastic pump provides:
- 38 mm or 1½-inch liquid connections
- ½-inch FNPT compressed-air inlet
- Maximum flow up to 354 lpm
- Maximum pressure of 8.6 bar
- Solids passage up to 4.8 mm
- DIN or ANSI flanged connections
- Polypropylene or PVDF wetted housings
- Rotatable inlet and discharge manifolds
- Rubber, TPE and PTFE diaphragm options
- Clamp bands for faster servicing
- Lube-free pneumatic operation
- Simple installation and maintenance
Together, these features make the Wilden P4 Clamped Plastic Pump suitable for chemical transfer, unloading, circulation and compatible liquids containing suspended particles.
Pro-Flo Clamped Plastic Pump Design
The P4 chemical pump uses clamp bands to secure the liquid chambers, manifolds and centre section. Consequently, technicians can dismantle and reassemble the pump using a single tool.
Moreover, rapid access to diaphragms, valve balls and valve seats can reduce planned maintenance time. Therefore, the clamped plastic pump suits facilities where regular inspection, cleaning and quick servicing are important.
However, the suitability of clamped construction should be assessed according to the chemical risk, containment requirements and maintenance frequency.
Polypropylene and PVDF Construction
The Wilden P4 Clamped Plastic Pump is available with polypropylene or PVDF wetted housings.
Polypropylene suits many compatible acids, alkalis, treatment chemicals and industrial cleaning liquids. Alternatively, PVDF provides different chemical and temperature resistance for selected aggressive fluids.
However, neither material is suitable for every chemical. Therefore, users must verify the precise concentration, operating temperature and complete liquid composition before selecting the P4 pump.
Diaphragm and Elastomer Options
The P4 plastic diaphragm pump supports:
- Rubber diaphragms
- TPE diaphragms
- Full-Stroke PTFE diaphragms
- Reduced-Stroke PTFE diaphragms
Available elastomer materials may include:
- Buna-N
- EPDM
- FKM
- Neoprene
- PTFE
- Polyurethane
- Saniflex
- Wil-Flex
Each material provides different chemical, temperature, flexibility and abrasion resistance. Consequently, the diaphragms, valve balls, valve seats and seals should all match the transferred liquid and operating conditions.
Flanged P4 Pump Connections
The Wilden P4 Clamped Plastic Pump uses 1½-inch DIN or ANSI flanged inlet and discharge connections.
Moreover, both manifolds are rotatable. Therefore, installers can adjust their positions to match the available process pipework and installation layout.
Flanged connections also support secure integration with industrial pipelines. However, users should confirm the flange standard, pressure rating, gasket material and piping arrangement before ordering.
Solids Handling and Suction Performance
The P4 AODD pump can pass compatible solids up to 4.8 mm or 3/16 inch. As a result, it may handle selected liquids containing suspended particles.
Maximum published dry suction lift reaches:
- Rubber: Up to 4.88 metres
- TPE: Up to 3.96 metres
- Full-Stroke PTFE: Up to 4.7 metres
- Reduced-Stroke PTFE: Up to 3.05 metres
Meanwhile, wet suction lift reaches up to approximately 9.3 metres.
However, liquid viscosity, elevation, inlet-pipe resistance, air pressure and operating speed affect actual performance. Therefore, solids-heavy or difficult-suction applications require a detailed technical review.
Wilden P4 Applications in India
The Wilden P4 Clamped Plastic Pump may support applications across India such as:
- Chemical processing
- Acid and alkaline transfer
- Water and wastewater treatment
- Tank and container unloading
- Paint and coating production
- Industrial cleaning systems
- Adhesives and sealants
- Corrosive wastewater transfer
- Filtration circulation
- General industrial fluid transfer
For example, a polypropylene P4 pump may suit compatible general chemicals. Alternatively, a PVDF configuration may support selected aggressive fluids after a complete material-compatibility review.
Moreover, operators can regulate the transfer rate by adjusting the compressed-air supply.
Selecting the Correct Wilden P4 Pump
Correct selection depends on:
- Required flow and discharge pressure
- Chemical name and concentration
- Operating temperature
- Liquid viscosity
- Solids size and concentration
- Polypropylene or PVDF housing
- Diaphragm and valve materials
- DIN or ANSI flange standard
- Suction conditions
- Available compressed-air pressure and volume
- Required maintenance frequency
Therefore, users should configure the Wilden P4 Clamped Plastic Pump around the complete hydraulic and chemical duty.
Otherwise, incompatible materials may cause premature wear. Similarly, insufficient compressed-air capacity or unsuitable suction conditions may reduce flow, efficiency and component life.
Why Choose the Wilden Pro-Flo P4?
The Wilden Pro-Flo P4 combines corrosion-resistant thermoplastic construction with quick clamp-band servicing and dependable lube-free pneumatic operation.
Moreover, its rotatable manifolds, strong flow and broad diaphragm selection support varied industrial requirements. Consequently, this 1½-inch plastic AODD pump provides a practical solution for facilities across India requiring reliable chemical transfer and simplified maintenance.
Product Enquiries in India
The Wilden P4 Clamped Plastic Pump is presented through Pumps Bharat for chemical processing, water treatment, coatings, industrial cleaning, filtration, container unloading and general fluid-transfer applications across India.
When submitting an enquiry, please provide the liquid, concentration, operating temperature, required flow, discharge pressure, solids content, flange standard and available compressed-air supply. With this information, the available P4 housing, diaphragm and valve configurations can be evaluated against the application requirements.




















