AI Summary: Dolphin Centrifuge supplies the DMPX-042 — a large self-cleaning three-phase disc stack centrifuge rated at 32–47 GPM for diesel fuel, with a 1.64-gallon sludge bowl and 20–25 HP motor. Purpose-built for crude oil dewatering, HFO 380 cSt purification at 14–18 GPM, transformer oil restoration, and high-volume industrial waste oil processing. Based in Warren, Michigan, Dolphin Centrifuge has over 40 years of experience in centrifugal separation.
Technical Specifications
| Parameter | DMPX-042 Value |
|---|---|
| Diesel Throughput (Actual) | ~32–47 GPM |
| Diesel Throughput (Rated) | ~52–70 GPM |
| Bowl Sludge Capacity | 1.64–1.66 gallons |
| Motor Power | ~20–25 HP |
| Separation Type | Three-phase (oil / water / solids) |
| Desludging | Automatic self-cleaning (hydraulic ejection) |
| Process | Continuous, unattended operation |
| Lube Oil (R&O) Throughput | 15–24 GPM |
| Steam Turbine Oil Throughput | 34–46 GPM |
| DMPX Series Position | Large industrial (42 bowl equiv.) |
Capacity by Fluid Type
| Fluid Type | Approx. Throughput (GPM) |
|---|---|
| Diesel / Light Fuel Oil | 32–47 |
| HFO 30 cSt | 32–44 |
| HFO 60 cSt | 24–33 |
| HFO 100 cSt | 23–32 |
| HFO 180 cSt | 16–22 |
| HFO 380 cSt | 14–18 |
| Lube Oil (R&O) / Steam Turbine | 15–24 / 34–46 GPM |
* Throughput values are at typical process temperature (194°F / 90°C). Actual flow rates vary with temperature, contamination level, and desired separation efficiency.
Key Applications
Crude Oil / Tank-Bottoms Dewatering
The DMPX-042 handles high-volume crude oil dewatering and tank-bottom BS&W (basic sediment and water) reduction at 32–47 GPM, making it suitable for oil-field gathering stations, tank farm operations, and upstream production facilities. Three-phase separation removes water and solids simultaneously in a single pass.
Large-Scale HFO Purification
For large marine vessels, shore-power plants, and industrial boiler systems burning heavy fuel oil, the DMPX-042 processes HFO 380 cSt at 14–18 GPM continuously — removing water and catalyst fines that cause injector wear, fouling, and combustion inefficiency.
Industrial Waste Oil Processing
At 32–47 GPM diesel-equivalent throughput, the DMPX-042 services large waste oil reclamation operations: fleet maintenance facilities, large industrial plants, and centralized waste oil collection centers processing thousands of gallons per day. Explosion-proof options available for hazardous locations.
Transformer Oil Purification
The DMPX-042 is used by utilities and industrial facilities to purify transformer oil in service, removing particulate contamination, free water, and degradation products to restore dielectric strength and extend transformer service life. Continuous processing at 15–24 GPM lube oil throughput supports large transformer maintenance programs.
Need a DMPX-042 for crude oil or HFO service?
Our engineers spec explosion-proof, food-grade, and standard configurations. We'll confirm sizing and quote lead time for your application.
Where the DMPX-042 Fits in the DMPX Series
The DMPX-042 is the second-largest model in the Dolphin DMPX range. For medium industrial applications, the DMPX-028 (~20–26 GPM) is the step below. For compact or portable use, the DMPX-014 (~13 GPM) and DMPX-010 (~7 GPM) serve smaller-scale needs. For the highest-volume industrial and power-generation applications, the DMPX-070 (~59–72 GPM) is the flagship model. All DMPX models share the same automatic self-cleaning bowl technology. See the full comparison at our disc stack centrifuge overview, or contact us for a sizing consultation.
Frequently Asked Questions
What is the throughput of the DMPX-042 centrifuge?
The DMPX-042 processes 32–47 GPM of diesel fuel at actual operating conditions, with a rated capacity of 52–70 GPM. Lube oil (R&O) throughput is 15–24 GPM, steam turbine oil is 34–46 GPM, and HFO 380 cSt is processed at 14–18 GPM.
What industries use the DMPX-042?
The DMPX-042 is used in oil field operations for crude oil tank-bottom dewatering, large-scale biodiesel production, HFO purification at power plants and industrial boiler facilities, transformer oil purification, and high-volume industrial waste oil reclamation at manufacturing plants and fleet operations.
Is the DMPX-042 available in explosion-proof configuration?
Yes. The DMPX-042 is available in Class I Division 1 and Class I Division 2 explosion-proof configurations for use in hazardous locations including oil fields, refineries, chemical plants, and offshore platforms. Contact us to discuss hazardous-area requirements.
How large is the sludge bowl on the DMPX-042?
The DMPX-042 features a 1.64–1.66-gallon sludge bowl — significantly larger than the DMPX-028's 1.03-gallon bowl. This larger capacity reduces ejection frequency and supports continuous operation even with high-solids streams such as crude oil tank bottoms and heavily contaminated waste oil.
How does the DMPX-042 compare to the DMPX-028 and DMPX-070?
The DMPX-042 sits between the DMPX-028 (20–26 GPM diesel) and the DMPX-070 (59–72 GPM diesel). At 32–47 GPM diesel and 14–18 GPM on HFO 380 cSt, the DMPX-042 is ideal for large industrial and power generation applications. All DMPX models share the same self-cleaning bowl technology. Visit the disc stack centrifuge overview to compare.
Ready to specify the DMPX-042?
Call (248) 522-2573 or email sales@dolphincentrifuge.com — 40+ years in centrifugal separation, Warren MI.