Dolphin Centrifuge supplies food-grade and chemical-grade stainless steel disc stack centrifuge systems in 304 and 316L grades. Operating at 7,000+ Gs, these FDA/3A-compliant separators process corrosive and sanitary fluids continuously down to 1 micron.
Overview
Stainless steel centrifuges are specially designed disc-stack centrifuges for separating corrosive chemicals and food products. A pass-through feature allows continuous processing through stainless-steel centrifuges. A high centrifugal force of over 7,000 g separates fine sediment down to 1 micron.
The Alfa Laval stainless steel centrifuges are generally of the food-grade (sanitary) design configuration. This design means that all the fluid contact parts are made of high-grade stainless steel (316L).
Some centrifuges have a stainless steel sludge discharge chute as well. These machines are applicable where the separated solids are of value to the customer.
For example, the precipitate is a valuable extract that must have all stainless steel contact in food flavoring extraction.
These food-grade centrifuges are available in a three-phase configuration, making them suitable for fish oil, rendering, and other similar applications.
When to Specify Stainless Steel
The material of construction for a centrifuge bowl and wetted parts is determined by the fluid being processed. The general rule is straightforward: water-based fluids require stainless steel, while petroleum-based fluids (oil, diesel, fuel oil) can run in carbon steel bowls. Choosing the wrong material leads to corrosion, product contamination, and premature component failure.
Dolphin Centrifuge stocks both stainless steel and carbon steel disc stacks, bowls, and wetted components. Our engineers help customers select the correct material grade based on the process fluid, temperature, and any regulatory requirements specific to the application.
Material Selection Guide
| Application | Recommended Material | Reason |
|---|---|---|
| Food & beverage | 316L stainless steel | FDA/3A compliance, corrosion resistance to acids |
| Pharmaceutical / biotech | 316L stainless steel | cGMP compliance, electropolish capability |
| Water-based coolants | 304 or 316L stainless | Water causes rapid corrosion of carbon steel |
| Wastewater | 304 or 316L stainless | Water-based, may contain corrosive chemicals |
| Diesel fuel / fuel oil | Carbon steel | Non-corrosive to carbon steel, lower cost |
| Lube oil / hydraulic oil | Carbon steel | Oil protects against corrosion |
| Waste oil (high water) | 304 stainless steel | High water content accelerates corrosion |
| Corrosive chemicals | 316L stainless steel | Molybdenum content resists pitting and chloride attack |
Not Sure Which Material Grade You Need?
Our engineers will evaluate your process fluid, temperature, and regulatory requirements to specify the correct stainless steel grade and centrifuge configuration.
Stainless Steel Grades: 304 vs. 316L
304 Stainless Steel
The most common austenitic stainless steel grade. Offers good corrosion resistance for water-based fluids, moderate acids, and general industrial environments. Lower cost than 316L.
- • Suitable for machining coolants, wash water
- • Good for non-chloride environments
- • Lower material cost than 316L
316L Stainless Steel
Contains 2-3% molybdenum for superior resistance to pitting, crevice corrosion, and chloride attack. The “L” designation indicates low carbon content for improved weldability and reduced sensitization.
- • Required for food-grade and pharmaceutical use
- • FDA/3A-compliant when electropolished
- • Resists chlorides, acids, and salt solutions
Stainless Steel Centrifuge Models
AFPX 213 Stainless Steel Disc Stack Centrifuge
Applications: Yeast Separation from Beer, Wine Clarification, Corrosive Chemical Clarification, Fruit Juice Clarification, Flavor Extraction, Fish Oil & Meal Separation
| Spec | Value |
|---|---|
| Model Type | AFPX 213 XGD 14-60 |
| Maximum Capacity | 100 GPM on Water |
| Sludge Space | 3.87 Gallons |
| Bowl Speed | 4,600 RPM |
| G-Force | 7,200 Gs |
| Drive Motor | 15 HP |
| Voltages | 230 / 460 V |
| Size | 5' x 7' x 7' (H) |
BRPX 313 Stainless Steel Disc Stack Centrifuge
Applications: Fish Oil Separation from Stick-water, Pork Fat (Lard) Separation from Water, Chemical Clarification
| Spec | Value |
|---|---|
| Model Type | BRPX 313 SGT 24-60 |
| Rated Capacity | 50 GPM |
| Sludge Space | 3.87 Gallons |
| Motor HP | 15 HP |
| Voltages | 230 / 460 V |
BRPX 309 Beer & Beverage Centrifuge
The BRPX 309 Centrifuge is a beer-clarifying centrifuge made of stainless steel and designed for the clarification of Beer, Wine, Cider, and other beverages. With a 10 HP Motor, the BRPX 309 centrifuge has a bowl RPM of 7,100 and can process 30 GPM of Beer for yeast separation.
| Spec | Value |
|---|---|
| Model Type | BRPX 309 SGT 24-60 |
| Rated Capacity | 30 GPM on Beer, Wine, Cider |
| Sludge Space | 1.35 Gallons |
| Motor HP | 10 HP |
| Voltages | 230 / 460 V |
AFPX 207 Three-Phase Food Grade Centrifuge
The AFPX 207 Stainless-Steel contact centrifuge is a self-cleaning disc-stack centrifuge designed for the three-phase separation of animal fat (AF), fish oil, clarified butter, fish-stickwater, edible oils, and others. With a 10 HP Motor, the AFPX 207 centrifuge has a bowl RPM of 6,400 and can process 20 GPM of animal fat at 180 F.
| Spec | Value |
|---|---|
| Model Type | AFPX 207 70S |
| Rated Capacity | 20 GPM on Animal Fat @ 180 F |
| Sludge Space | 1.12 Gallons |
| Motor HP | 10 HP |
| Voltages | 230 / 460 V |
FDA & 3A Compliance
For food and beverage applications, Dolphin Centrifuge supplies systems built to FDA and 3A sanitary standards. This includes 316L stainless steel wetted surfaces, sanitary tri-clamp connections, electropolished bowl interiors (Ra ≤ 32 µin), and food-grade gaskets and seals. All materials are fully traceable with mill certificates available on request.
Common food-grade centrifuge applications include beer and wine clarification, edible oil polishing, juice clarification, dairy processing, and fish oil separation.
Stainless Steel Industrial Applications
- Food-grade centrifuge systems — edible oils, dairy, juice, fats
- Beer and wine clarification — yeast removal, cold stabilization
- Machining coolant recovery — tramp oil and fines removal
- Wastewater treatment — oily water separation, sludge removal
- Algae harvesting — biomass concentration and dewatering
- Pharmaceutical clarification — cell debris removal, protein recovery
Ready to Get Started?
Contact our engineers to discuss your food-grade or chemical-resistant stainless steel centrifuge system requirements. We will help you select the right material grade and configuration for your application.