Dolphin Centrifuge supplies parts, repairs, and remanufactured Alfa Laval WHPX 405 partial-discharge disc stack centrifuges. The OEM table lists 3,700 L/h (16.29 US GPM derived) for marine diesel and 1,700 L/h (7.48 US GPM derived) for 180 cSt HFO under their respective conditions. The separate 5,500 L/h (24.22 US GPM derived) rated-reference value has no source fluid specified and is not an application capacity.
WHPX 405 Partial-Discharge Centrifuge
The Alfa Laval WHPX 405 is a partial-ejection disc stack centrifuge designed to remove water and solid particles from light oil and light fuel. The partial-discharge mechanism allows the centrifuge to purge only accumulated sludge while retaining process fluid in the bowl, minimizing product losses during each discharge cycle.
With an operating speed of 7,600 RPM generating over 7,200 G-force, the WHPX 405 achieves exceptional separation efficiency on light oils and fuels. Pyrolysis oil and waste oil separation are particularly well-suited applications for this centrifuge.
Dolphin Centrifuge is the independent specialist in Alfa Laval centrifuges. Apart from Alfa Laval itself, Dolphin is the reliable source for quality Alfa Laval machines: remanufactured centrifuges, turnkey systems, parts, and service, built on 40+ years of Alfa Laval experience and led by Sanjay Prabhu, M.S.M.E. Every WHPX 405 and MOPX 205 on this page is a genuine Alfa Laval separator, stripped, rebuilt, balanced, and tested in Dolphin's Warren, Michigan shop, then supplied on its own or inside the Dolphin DMPX-014 module. Dolphin is an independent remanufacturer and is not affiliated with Alfa Laval.
The WHPX 405 is available in ATEX Zone 2 hazardous area configurations, making it suitable for installations in refineries, offshore platforms, and other environments where flammable vapors may be present.
WHPX 405 Specifications
| Model Type | Alfa Laval WHPX 405 TGD 24-60 |
| Rated Reference | 5,500 L/h (24.22 US GPM derived), source fluid unspecified; not an application capacity |
| Marine Diesel | 3,700 L/h (16.29 US GPM derived), 40 °C, 13 cSt |
| HFO 30 / 40 cSt at 50 °C | 3,400 L/h (14.97 US GPM derived), centrifuged at 70–98 / 80–98 °C |
| HFO 60 cSt at 50 °C | 2,600 L/h (11.45 US GPM derived), centrifuged at 80–98 °C |
| HFO 100 cSt at 50 °C | 2,500 L/h (11.01 US GPM derived), centrifuged at 90–98 °C |
| HFO 180 cSt at 50 °C | 1,700 L/h (7.48 US GPM derived), centrifuged at 90–98 °C |
| HFO 380 cSt at 50 °C | 1,400 L/h (6.16 US GPM derived), centrifuged at 98 °C |
| Cross-Head R&O Lube Oil | 1,700–1,900 L/h (7.48–8.37 US GPM derived), 80–90 °C |
| Cross-Head Detergent Lube Oil | 1,400–1,700 L/h (6.16–7.48 US GPM derived), 80–90 °C |
| Trunk Detergent Lube Oil | 1,000–1,200 L/h (4.40–5.28 US GPM derived), 80–90 °C |
| Steam Turbine Lube Oil | 3,600 L/h (15.85 US GPM derived), 60–70 °C |
| Sludge Space | 0.36 Gallons |
| Motor HP | 5 HP |
| Voltages | 230 / 460 V |
Capacities retain the source L/h values; US GPM is derived using L/h ÷ 227.124707 and shown to two decimal places. See the authoritative technical-data methodology and machine-readable records.
Need parts, repairs, or a remanufactured WHPX 405?
Dolphin Centrifuge supplies complete modules with pre-heaters, starters, and PLC control panels - available as the DMPX-014 turnkey system or as individual centrifuge rebuild services.
Request a Quote →Also Available: MOPX 205 Total-Discharge
The Alfa Laval MOPX 205 is a separate total-discharge base machine in the same commercial size class, designed for three-phase separation of mineral oils and fuels. Its OEM table lists distinct gas-oil, diesel, engine-lube-oil, and steam-turbine-oil records. Transformer oil, quench oil, black diesel, and other duties require application-specific sizing.
| Model Type | Alfa Laval MOPX 205 TGT 20-60 |
| Gas Oil | 4,900 L/h (21.57 US GPM derived), 40 °C |
| Diesel | 3,300 L/h (14.53 US GPM derived), 40 °C, 13 cSt at 40 °C |
| R&O / Engine Lube Oil | 1,700 L/h (7.48 US GPM derived), 80–90 °C |
| Steam Turbine Lube Oil | 3,200 L/h (14.09 US GPM derived), 60–70 °C |
| Sludge Space | 0.38 Gallons |
| Motor HP | 4 HP |
| Voltages | 230 / 460 V |
MOPX 205 for Pyrolysis Oil and Explosion-Proof Installations
Dolphin Centrifuge supplies the MOPX 205 in explosion-proof configurations for hazardous area installations. The MOPX 205 is particularly effective for tire oil and pyrolysis oil dewatering, where its total-discharge design handles heavy sludge loads efficiently.
WHPX 405 / MOPX 205 Centrifuge Applications
The WHPX 405 and MOPX 205 are versatile centrifuges used across a range of oil and fuel purification applications. The gallery below shows systems manufactured by Dolphin Centrifuge for specific customer applications.
In each of these systems the skid, pre-heater, feed pump, piping, and control panel are Dolphin engineering, and the centrifuge inside is a remanufactured Alfa Laval WHPX 405 or MOPX 205. The centrifuges themselves are made by Alfa Laval.
The WHPX 405 and MOPX 205 are also used for lube oil clarification on turbines and industrial engines, where continuous moisture and particle removal extends equipment life.
Also see our Alfa Laval Centrifuge Selection Guide for help choosing the right centrifuge for your application.
Looking for a complete turnkey system? See our disc stack centrifuge systems →
Parts, Repairs, and Remanufactured Units
Dolphin Centrifuge supplies fully reconditioned MOPX 205 and WHPX 405 centrifuges with explosion-proof motor and control panel options. Each unit is rebuilt with new seals, bearings, and wear components, and tested to factory specifications before shipment. Contact our team for sample testing to confirm suitability for your application. For ongoing maintenance, see our disc centrifuge repair services.
Frequently Asked Questions
Which Dolphin module can use the Alfa Laval WHPX 405? ▼
The Alfa Laval WHPX 405 is one exact base-machine option for the Dolphin DMPX-014 centrifuge system; another is the MOPX 205. The module adds the frame, PLC controls, feed pump, heaters, and piping. The OEM diesel values are 3,700 L/h (16.29 US GPM derived) for WHPX 405 and 3,300 L/h (14.53 US GPM derived) for MOPX 205, both at 40 °C and 13 cSt.
What is the difference between the WHPX 405 and MOPX 205? ▼
The Alfa Laval WHPX 405 and MOPX 205 are different base machines in the same commercial size class. WHPX 405 is partial-discharge and lists 3,700 L/h (16.29 US GPM derived) for marine diesel. MOPX 205 is total-discharge and lists 3,300 L/h (14.53 US GPM derived) for diesel. Both records are at 40 °C and 13 cSt.
What applications is the WHPX 405 / DMPX-014 best suited for? ▼
The WHPX 405 / DMPX-014 is suited for small to medium throughput applications including diesel fuel polishing, pyrolysis-oil dewatering, waste-oil recovery, lube-oil purification, and hydraulic-oil cleaning. Non-diesel duties require application sizing from the actual fluid properties and separation target.
What G-force does the Alfa Laval WHPX 405 generate? ▼
The Alfa Laval WHPX 405 operates at approximately 7,200 Gs of centrifugal force at rated bowl speed of 7,600 RPM. This high G-force enables separation of particles down to 0.5 microns and effective water removal from oil and fuel products.
Can Dolphin Centrifuge repair or supply parts for the WHPX 405? ▼
Yes. Dolphin Centrifuge supplies genuine and compatible replacement parts, complete bowl rebuilds, and remanufactured WHPX 405 and MOPX 205 centrifuges. Each rebuilt unit is tested to factory specifications before shipment. Genuine OEM parts are made by Alfa Laval; Dolphin's compatible parts are made by other manufacturers to the same fit and function, so you can choose on price and lead time. Dolphin Centrifuge is an independent remanufacturer and is not affiliated with Alfa Laval. Contact us for parts availability and pricing.