Product Description
Wilden P400 Bolted Plastic Pump for Chemical Transfer
The Wilden P400 Bolted Plastic Pump is a 38 mm (1½-inch) air-operated double-diaphragm pump developed for corrosive chemicals and demanding industrial liquids.
Its secure bolted construction supports dependable product containment. Moreover, the redesigned liquid path reduces internal friction, helping improve hydraulic output and extend diaphragm life.
P400 AODD Pump Flow and Pressure
Maximum published flow depends on the selected diaphragm:
- Rubber: Up to 454 lpm
- TPE: Up to 454 lpm
- Full-Stroke PTFE: Up to 424 lpm
- Reduced-Stroke PTFE: Up to 318 lpm
Maximum discharge pressure reaches 8.6 bar or 125 psi.
However, the maximum flow should not be applied to every configuration. Diaphragm type, compressed-air capacity, suction conditions and system resistance affect actual pump output.
Key Features and Benefits
The Wilden Pro-Flo plastic pump provides:
- 38 mm or 1½-inch liquid inlet and discharge
- 1/2-inch FNPT compressed-air inlet
- Maximum flow up to 454 lpm
- Maximum pressure of 8.6 bar
- Solids passage up to 6.35 mm
- DIN or ANSI flanged connections
- Polypropylene or PVDF wetted housings
- Pro-Flo Air Distribution System
- Rubber, TPE and PTFE diaphragm options
- Strong wet and dry suction lift
- Secure bolted construction
- Lube-free pneumatic operation
- Simplified maintenance
- Dependable on/off performance
Together, these features make the Wilden P400 Bolted Plastic Pump suitable for chemical transfer, tank unloading, process circulation and compatible liquids containing suspended particles.
Pro-Flo Air Distribution System
The P400 AODD pump uses the Pro-Flo Air Distribution System, which has a simplified pneumatic design with only three moving parts. Consequently, the system supports dependable cycling and straightforward servicing.
Moreover, the plastic centre block operates without external airline lubrication. Therefore, facilities can reduce lubricator maintenance and avoid introducing lubricant into the compressed-air exhaust.
The air system also contains no electronic operating components. As a result, the Wilden chemical pump provides simple pneumatic operation across varied industrial environments.
Polypropylene and PVDF Construction
The Wilden P400 Bolted Plastic Pump is available with polypropylene or PVDF wetted housings.
Polypropylene supports many compatible acids, alkalis and general process chemicals. Alternatively, PVDF provides different corrosion-resistance characteristics for selected aggressive liquids.
However, neither material is suitable for every chemical. Therefore, users should verify the exact chemical concentration, operating temperature and complete fluid composition before selecting the P400 pump.
Diaphragm and Elastomer Options
The bolted 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
- Geolast
- Neoprene
- PTFE
- Polyurethane
- Saniflex
- Wil-Flex
Each material has different chemical, abrasion and temperature limits. Consequently, the diaphragms, valve balls, valve seats and seals should all match the process liquid and operating conditions.
Flanged Process Connections
The P400 chemical-transfer pump uses 1½-inch DIN or ANSI flanged inlet and discharge connections. Therefore, it integrates with industrial chemical-processing pipelines that require secure flanged assembly.
Moreover, flanges provide stable pipe attachment and reliable alignment. However, users should confirm the flange standard, pressure rating, gasket material and piping arrangement before installation.
Solids-Handling Capability
The Wilden P400 Bolted Plastic Pump can pass compatible solids up to 6.35 mm or ¼ inch.
As a result, it may transfer selected liquids containing suspended particles. Nevertheless, particle shape, concentration and abrasiveness can affect valve, seat and diaphragm life.
Therefore, users should provide complete solids information during pump selection.
P400 Suction Performance
Maximum published dry suction lift reaches approximately 5.7 metres, depending on the diaphragm configuration. Meanwhile, wet suction lift reaches up to approximately 9.7 metres.
However, actual suction performance also depends on liquid viscosity, inlet-pipe resistance, elevation, pump speed and available compressed-air volume.
Consequently, the complete suction system should be evaluated rather than relying only on the maximum pump capability.
Wilden P400 Applications in India
The P400 bolted plastic pump may support applications across India such as:
- Chemical processing
- Acid and caustic transfer
- Paints and coatings
- Water and wastewater treatment
- Mining operations
- Oil and gas support duties
- Liquid terminals
- Tank and tanker unloading
- Industrial scrubber systems
- Adhesives and sealants
- Corrosive wastewater
- General process transfer
For example, a polypropylene P400 pump may suit compatible general chemical duties. Alternatively, a PVDF configuration may support selected aggressive fluids after a complete material-compatibility review.
Selecting the Correct Wilden P400 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
- Suction conditions
- Available compressed-air pressure and volume
- DIN or ANSI flange requirements
Therefore, users should configure the Wilden P400 Bolted Plastic Pump around the complete hydraulic and chemical duty.
Otherwise, incompatible materials, excessive suction lift or insufficient compressed-air capacity may reduce flow, efficiency and component life.
Why Choose the Wilden Pro-Flo P400?
The Wilden Pro-Flo P400 combines corrosion-resistant thermoplastic construction with secure bolted containment and dependable pneumatic operation.
Moreover, its strong flow, high suction capability and broad elastomer selection support varied industrial processes. Consequently, this 1½-inch AODD pump provides a practical solution for facilities across India requiring reliable chemical transfer and straightforward maintenance.
Product Enquiries in India
The Wilden P400 Bolted Plastic Pump is presented through Pumps Bharat for chemical processing, coatings, wastewater treatment, mining, oil and gas support, scrubber systems, tanker unloading and general corrosive-fluid transfer applications across India.
When submitting an enquiry, please provide the liquid, concentration, temperature, required flow, discharge pressure, solids content and available compressed-air supply. With this information, the available P400 housing, diaphragm and valve configurations can be evaluated against the application requirements.