AI Summary: Dolphin Centrifuge supplies the DMB-004 — a manual-clean disc stack centrifuge clarifier rated at 4 GPM on diesel (13 cSt) and 8,600 RPM with a 1 HP motor. The most economical entry point in the DMB manual-clean range, ideal for small turbine lube oil purification, diesel polishing, and hydraulic oil maintenance in low-volume applications. Based in Warren, Michigan, Dolphin Centrifuge has over 40 years of experience in centrifugal separation.
DMB-004 Specifications
| Parameter | Value |
|---|---|
| Separation type | Two-phase clarifier (liquid-liquid or liquid-solid) |
| Diesel throughput | ~4 GPM (13 cSt at operating temperature) |
| Rated throughput (water) | ~6 GPM |
| Bowl speed | 8,600 RPM |
| Drive motor | 1 HP |
| Cleaning method | Manual (bowl disassembly required for solids removal) |
| Bowl construction | Carbon steel standard |
| Power supply | 115V or 230V single-phase / 60 Hz (other voltages available) |
Throughput figures are for typical fluids at listed conditions. Actual capacity varies with feed viscosity, temperature, density difference, and solids loading.
DMB-004 Capacity by Application (GPM)
| Application / Fluid | Throughput (GPM) |
|---|---|
| Gas oil at 40°C | ~5 GPM |
| Diesel fuel (13 cSt) | ~4 GPM |
| Lube oil (R&O) | ~2 GPM |
| Lube oil (detergent) | ~2 GPM |
| Steam turbine oil | ~4 GPM |
Manual-Clean vs. Self-Cleaning: Choosing the Right Approach
The DMB-004 is a manual-clean clarifier: accumulated solids are retained in the bowl until the machine is stopped, the bowl disassembled, and the solids manually removed. This requires periodic planned cleaning shutdowns — typically every few days to weeks depending on the solids loading of the feed.
For applications with low solids content — clean diesel polishing, turbine lube oil with minimal particulate — manual cleaning is infrequent and the DMB-004 delivers excellent value. The simpler design means lower initial cost, lower operating complexity, and straightforward maintenance.
If your feed has significant solids loading, or if uninterrupted 24/7 operation is critical, consider Dolphin's self-cleaning DMPX-010 instead. The DMPX-010 ejects solids automatically without stopping and operates continuously without cleaning shutdowns.
Need help selecting between DMB-004 and DMPX-010?
Our applications engineers will evaluate your solids loading, throughput, and uptime requirements to recommend the right model — at no charge.
Key Applications
Small Turbine Lube Oil Systems
Steam turbines and gas turbines up to ~1,000 HP with lube oil reservoirs of 300–1,000 gallons. The DMB-004 purifies lube oil in a continuous bypass loop at 2–4 GPM, removing water and wear particles to extend oil life and protect bearings.
Diesel Fuel Polishing
Generator sets, small standby power systems, and diesel storage tanks requiring continuous fuel polishing at ~4 GPM. The DMB-004 removes free water and particulates from diesel in a compact package suited for space-constrained generator rooms.
Diesel Centrifuge Details →Hydraulic Oil Purification
Small hydraulic systems on CNC equipment, presses, and industrial machinery. The DMB-004 removes water ingress and fine particulates from hydraulic circuits in a bypass loop at 2 GPM, maintaining oil cleanliness and preventing valve and actuator wear.
Hydraulic Oil Centrifuge Details →Low-Volume Industrial Oil Polishing
Quench oil, heat treatment oil, metalworking oil, and similar industrial fluids requiring periodic polishing to remove water and solids accumulation. The DMB-004 handles these low-throughput applications cost-effectively where self-cleaning operation is not required.
Frequently Asked Questions
What is the throughput of the DMB-004?
The DMB-004 processes ~4 GPM of diesel, ~5 GPM of gas oil at 40°C, ~2 GPM of lube oil (R&O), and ~4 GPM of steam turbine oil. Rated at 6 GPM on water-viscosity fluid.
What is the difference between DMB-004 and DMPX-010?
The DMB-004 is manual-clean — solids accumulate until the bowl is manually disassembled and cleaned. The DMPX-010 is self-cleaning with automatic solids ejection. The DMB-004 costs less and is appropriate for low-solids feeds; the DMPX-010 is better for continuous operation with moderate to high solids.
What applications is the DMB-004 best suited for?
Small turbine lube oil systems (up to ~1,000 HP), diesel polishing on small generators, hydraulic oil purification, and low-volume oil polishing where solids content is low and periodic cleaning is acceptable.
How often does the DMB-004 bowl need to be cleaned?
Cleaning frequency depends on your feed fluid's solids content. For clean turbine lube oil or polished diesel, intervals can range from several weeks to months. For higher-solids feeds, weekly cleaning may be required. Contact us to estimate cleaning intervals for your application.
What voltages are available for the DMB-004?
Standard configurations are 115V or 230V single-phase / 60 Hz. Other voltages and frequencies are available for international installations. The DMB-007 and larger DMB models typically use 460V / 3-phase. Contact Dolphin Centrifuge to confirm the right electrical configuration for your site.
Related Resources
Ready to order the DMB-004?
Call (248) 522-2573 or email sales@dolphincentrifuge.com — 40+ years in centrifugal separation, Warren MI.