Sample Thieves (Bacon Bombs), Koehler

Devices obtain samples from any level in storage tanks, tank cars, and drums

A plunger assembly opens to admit the sample when the thief strikes the bottom of the tank or is triggered by a secondary trip line. Plunger locking cam provides a tight closure during transport, except for 2.8cm (1¹/₈") diameter models, which are designed for sampling through narrow pipes and openings.