The Tulsa Oil Thief™ has been one of the basic products of W. L. Walker Company since 1932. The Thief has a reputation in the oil industry for effective oil sampling at the bottom of the tank or at any level. Tulsa Oil Thiefs are made in three models and in five sizes. These models are seperated by barrel material: Aluminum, Brass, and Clear Plastic. All theifs have the following features: single trip, antifouling flat bail assembly, full opening horizontal closure system with rotating valve, two adjustable springs (one for closing tension, and one for tripping tension), side hanger on top casting for hanging on hatches or equipment cases. Petcocks may be installed at any point on any style thief, except for the top. We use a material for the clear plastic barrels that will not crack if the petcock strikes an object.
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