I am interested to find devices to get wvo from restaurants and hotels and sell it for bio-diesel production.

"One of the goals of Green Diesels is to share the knowledge of vegetable oil use in a diesel engine. The two ways we do this are through teaching workshops and working hands-on with vehicle owners to convert their own diesels. We continually test new products and strategies to offer the most durable and user friendly products available. [...]

Green diesels designs and installs custom fuel systems that utilize pure vegetable oil as fuel. We charge $25/hour labor on these systems. The total price, with parts, ranges from $1000 to $1800 for a car. Trucks range from $1200 to $3200.

We work with the vehicle's owners to design a system that suits their needs. We encourage the owner to participate in part/all of the installation process. This gives owners an extra edge when it comes to maintaining their own systems.

"These are the most advanced and efficient injector line heaters currently available. However, research and development of injector line heating technoloy continues. Please check back for improvements and accessory products such as solid state temperature controls, and high temp line heater insulative jackets. Custom kits for small high MPG engines should also be availabe in the near future.

Currently there are a limited number of units available as demand exceeds production capability.
Since quality is my highest concern, I cannot raise production levels beyond the point where product quality may suffer. As a result delivery may take up to 3 weeks from the time you order them.

Product specifications:
Current draw = 12VDC/3 amps
Length of line required per heater = 3.5" to 5" depending on line diameter.
Wire lead length = 6"
Maximum Btu output = 120"

http://lineheaterspecialists.netfirms.com/