UNITOR AEROFLOW DOUBLE DIAPHRAGM PUMP 1 INCH PP
The Unitor Aeroflow Double Diaphragm Pump 1″ PP is a heavy-duty air-operated pump designed for marine cleaning and fluid transfer applications. With a flow capacity of up to 170 L/min, corrosion-resistant polypropylene/PTFE construction and the ability to handle solids up to 7.5 mm, it is ideal for cargo hold cleaning, tank and bilge operations, wastewater transfer and general onboard maintenance.
Product number: 635625
Supersedes: 777992
Description
The Unitor Aeroflow Double Diaphragm Pump 1″ PP is a robust air-operated double diaphragm pump developed for demanding marine cleaning and fluid handling applications.
The pump combines a maximum flow capacity of 170 litres per minute with the ability to handle fluids with viscosities up to 35,000 CPS and suspended solids up to 7.5 mm.
Its polypropylene and PTFE construction provides good corrosion resistance for use with a wide range of chemicals commonly encountered in marine operations. As the pump is air-operated, no electrical power is required at the pump.
Typical applications
- Cargo hold cleaning
- Tank cleaning
- Bilge cleaning and bilge water transfer
- Deck and hull cleaning
- Wastewater and sludge transfer
- General onboard maintenance
- Fuel and oil transfer
- Transfer of cleaning chemicals and other compatible fluids
The pump can be used on bulk carriers, tankers and other vessels where reliable transfer of cleaning chemicals, wastewater, oils and other fluids is required.
Features & Benefits
- Maximum flow capacity: 170 L/min
- Air-operated double diaphragm design
- Polypropylene and PTFE construction
- Corrosion resistant
- Self-priming
- Can run dry
- Handles viscous fluids up to 35,000 CPS
- Passes solids up to 7.5 mm
- Suitable for a wide range of aggressive chemicals
- No electricity required at the pump
- Designed for demanding marine applications
- Simple maintenance
Wilhelmsen supplies the pump with clamp collars, air barbs and fluid inlet/outlet nipples.
Technical Specifications
| Specification | Value |
|---|---|
| Product number | 635625 |
| Previous product number | 777992 |
| Product group | 422 |
| Pump type | Air-operated double diaphragm |
| Construction | Polypropylene / PTFE |
| Fluid inlet/outlet | 1″ BSP |
| Air inlet | 1/2″ BSP |
| Maximum air pressure | 8 bar |
| Maximum flow | 170 L/min |
| Maximum viscosity | 35,000 CPS |
| Maximum solid size | 7.5 mm |
| Suction lift – wet | 9.8 m |
| Suction lift – dry | 5 m |
| Dimensions | 430 × 222 × 416 mm |
| Weight | 14.2 kg |
Accessories & Spare Parts
Available accessories and spare parts include:
- 770210 – Fluid & Air Hose Kit
- 635658 – Complete Service Kit, air & fluid side
- 635657 – Air Barbs, 2 pcs
- 635655 – Fluid Barbs + Collar Clamps, 2 pcs each
Delivery throughout Norway
Ålesund Supply supplies Unitor Aeroflow pumps, accessories and spare parts throughout Norway.
We can arrange delivery to customers in Ålesund, Bergen, Trondheim, Oslo, Stavanger, Kristiansand, Haugesund, Molde, Kristiansund, Bodø and Tromsø, as well as directly to vessels, shipyards and industrial customers throughout Norway.
Contact us for price, availability and delivery options.






