Simple Centrifuge
Clean waste vegetable oil (WVO), bio diesel, lube oils, and even hydraulic oil in your garage
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Photo Gallery - This gallery represents the work over several years. Some designs have been replaced and/or updated as time progressed. Most images contain a date stamp visable on the large version. Please note the date when viewing. We are always experimenting with new concepts and designs. If you have any questions about any photo please contact us.
Total photos in gallery 1296 - Latest photo update 2021/12/10 18:48:01
Asterisk(*) indicates new photos in the past 30 days
Adapter 56C to 56J ( 15 )
Algae Recovery ( 42 )
Bacterial fermentation ( 1 )
Balancer Mandrels ( 8 )
Bearing replacement ( 25 )
Botry Culture ( 2 )
Building a gantry ( 16 )
Chestnut Extract ( 9 )
CNC Coolant ( 6 )
Coconut Oil ( 8 )
Construction ( 43 )
Contaminated diesel ( 2 )
Craig's Machine ( 31 )
Cross Drill End Bell ( 10 )
Crude oil ( 5 )
Custom motor shaft ( 23 )
Experimental Motor ( 19 )
Explosion proof motor ( 3 )
Feed Cone ( 29 )
Feed Cone with Fins ( 8 )
Feed Tube ( 3 )
Filter Paper ( 7 )
Ford on WMO ( 2 )
Foundry ( 5 )
Foundry 2 ( 18 )
Gear pump ( 2 )
Grinding fluid ( 19 )
Grinding fluid 2 ( 14 )
Heaters ( 9 )
History ( 11 )
Homemade Diesel ( 7 )
Homemade diesel 2 ( 41 )
Homemade Diesel 3 ( 15 )
Homemade Diesel 4 ( 12 )
How it works ( 3 )
Hydraulic Oil ( 3 )
Keyless Bushing ( 11 )
Lab Centrifuge ( 16 )
Lab Centrifuge 2 ( 18 )
Lapidary Cutting Oil ( 2 )
Lock motor shaft ( 6 )
Magnesol removal ( 6 )
Microwave heater ( 7 )
Misc. Mods ( 4 )
Mitsubishi 4x4 on WMO ( 10 )
New Feed Cone ( 16 )
New Feed Tube ( 7 )
New Rotor 2013 ( 24 )
New rotor design ( 16 )
Oil and Contaminants ( 47 )
Oil Skimmer ( 8 )
Our Shop ( 37 )
Peristaltic Pump ( 32 )
Powder Coating ( 10 )
Renderings ( 8 )
Retrofit rotor for WVOD ( 17 )
Rework Mount ( 10 )
Rotor fins ( 34 )
Rotor Fins One Piece ( 6 )
Seal ( 6 )
Sea Weed ( 4 )
Sediment removal ( 16 )
See thru lid - Building ( 16 )
See thru lid - Testing ( 28 )
Sight Glass ( 6 )
Skim Tube ( 56 )
Skim Tube for VCO ( 8 )
Small Settling Tank ( 14 )
Tanks ( 9 )
Tanks - Complete System ( 13 )
Tap drain ( 10 )
Testing Seal Screws ( 6 )
Tests by fuelfarmer ( 22 )
Turn key machine ( 38 )
Two part rotor ( 30 )
Ultrasonic filter cleaning ( 8 )
Updates ( 26 )
Users Machines ( 34 )
Vacuum pickup ( 3 )
VW on WMO ( 7 )
Water-Oil Seperator ( 7 )
Water trap ( 5 )
Wine Clarification ( 4 )
WVO Heat Tests ( 7 )
WVO Pump ( 6 )
WVO Tests ( 14 )
 Tanks - Complete System
This is a typical large scale setup. The vertical tank is 1000 gallons. The horizontal storage tank is 3000 gallons. All tanks have full containment. One small 2.5 gallon heater and a single centrifuge easily keeps up with two Clean Burn CB-5000 furnaces. Each heater burns about 5 gallons per hour when running. This centrifuge setup runs 24/7-365.
Used motor oil is first pumped into the 1000 gallon vertical settling tank. This allows the majority of the water to be settled off. The three pipes shown in this photo, from left to right, are air bleed/over fill, fill pipe (larger), and heater vent. This shows the containment for the vertical tank. This containment is raised to give the oil a constant head pressure. All the containment are a monolithic pour. This is the bottom of the vertical tank. The left vertical pipe is the tank vent/over fill pipe. The larger vertical pipe is the fill pipe. Note the cam lock connectors and valve. There is a similar valve and cam lock on the bottom of the tank for draining off water. The horizontal pipe is the feed to the heater and centrifuge. The exit feed is about three feet off the bottom of the tank. This allows the heavier and nastier oil more time to separate and drop more water.
Used motor oil is first pumped into the 1000 gallon vertical settling tank. This allows the majority of the water to be settled off. The three pipes shown in this photo, from left to right, are air bleed/over fill, fill pipe (larger), and heater vent. This shows the containment for the vertical tank. This containment is raised to give the oil a constant head pressure. All the containment are a monolithic pour. This is the bottom of the vertical tank. The left vertical pipe is the tank vent/over fill pipe. The larger vertical pipe is the fill pipe. Note the cam lock connectors and valve. There is a similar valve and cam lock on the bottom of the tank for draining off water. The horizontal pipe is the feed to the heater and centrifuge. The exit feed is about three feet off the bottom of the tank. This allows the heavier and nastier oil more time to separate and drop more water.
This shows the bottom drain and cam lock connector. This allows the waste water to be drained into a tank for disposal. Main valve from the vertical tank to the heater. This allows the oil to be turned off at the tank. This is normally open full. Flow is regulated after the heater. 3000 gallon horizontal tank and containment. The tank is so large it serves as a platform for the heater and centrifuge.
This shows the bottom drain and cam lock connector. This allows the waste water to be drained into a tank for disposal. Main valve from the vertical tank to the heater. This allows the oil to be turned off at the tank. This is normally open full. Flow is regulated after the heater. 3000 gallon horizontal tank and containment. The tank is so large it serves as a platform for the heater and centrifuge.
Heater, flow regulation, and the centrifuge. Plumbing connections at the heater. Oil from the settling tank enters Cold and leaves Hot to the centrifuge. The Relief Valve has been plumbed with a vent pipe to the top of the settling tank. The heater is open to atmosphere though the vent pipe. The drain has been replaced with a ball valve and directed to a bucket. Note the cap on the end of the pipe. These caps are placed to prevent leaks in the event a valve leaks or is opened by accident. The caps are removed and replaced after use.
Heater, flow regulation, and the centrifuge. Plumbing connections at the heater. Oil from the settling tank enters Cold and leaves Hot to the centrifuge. The Relief Valve has been plumbed with a vent pipe to the top of the settling tank. The heater is open to atmosphere though the vent pipe. The drain has been replaced with a ball valve and directed to a bucket. Note the cap on the end of the pipe. These caps are placed to prevent leaks in the event a valve leaks or is opened by accident. The caps are removed and replaced after use.
The upper red valve controls the flow to the centrifuge. It is only cracked enough to establish the desired gallons per hour. The lower green valve is a redirect which allow the operator to measure the flow rate. Experience is key to choosing the correct rate. Some oils run quickly and others slowly depending on the degree of contamination. This is the centrifuge mounted and leveled. Yellow line is incoming hot oil from the heater. Red hose is the clean oil going to the 3000 gallon storage tank. The white hose is the inner sump drain which is directed to a bucket. This drains off any small amount of oil that may collect around the motor shaft. Note that the motor is dry. Copper lines leaving thank feed a furnace.
The upper red valve controls the flow to the centrifuge. It is only cracked enough to establish the desired gallons per hour. The lower green valve is a redirect which allow the operator to measure the flow rate. Experience is key to choosing the correct rate. Some oils run quickly and others slowly depending on the degree of contamination. This is the centrifuge mounted and leveled. Yellow line is incoming hot oil from the heater. Red hose is the clean oil going to the 3000 gallon storage tank. The white hose is the inner sump drain which is directed to a bucket. This drains off any small amount of oil that may collect around the motor shaft. Note that the motor is dry. Copper lines leaving thank feed a furnace.
This is one of the two furnaces that this centrifuge feeds. The filter mounted at the wall will likely never be cleaned. Other furnaces at this location have over 6000 hours without issues.    
This is one of the two furnaces that this centrifuge feeds. The filter mounted at the wall will likely never be cleaned. Other furnaces at this location have over 6000 hours without issues.    
Numeric Control, LLC
PO Box 916
Morton, WA 98356