Slide Valve Type clear barrel, slide valve. The Robinson Slide Valve designed thief is made in three models. Clear barrel, Brass barrel and Aluminum barrel. All three models offer the following features: Single trip action, Full opening with slide valve closure, two adjustable springs, hanger on the top casting for hanging thief on tank hatch, adjustable graduated trip rod and hexagon shaped closure spring adjuster for easier spring adjustment.

*Special design drain valves may be installed at any position on the thief barrel, except near top or base castings