Sample Thieves

Koehler offers a full selection of sample thieves for obtaining samples from storage tanks, tank cars, etc. These thieves conform to a range of standard test methods. Please refer to the following brief descriptions for determining which thief is best suited for your particular application.

Sample Thief (Bacon Bomb)
Obtains samples from storage tanks, tank cars and drums. When the thief strikes the bottom of the tank, a plunger assembly opens to admit the sample. The plunger closes again when the bomb is withdrawn, forming a tight seal. Samples can be taken at any depth with the use of a secondary trip line, or extension rods may be added for obtaining samples at levels of up to 18"(46cm) off the bottom. Equipped with plunger locking cam for tight closure during transport (except for 4 oz 11⁄8" dia. model). Special models include a 4 oz (118mL) ‘pencil’ model for sampling through small diameter pipes and openings, and clear acrylic samplers with plated brass plunger and end pieces. Modified samplers can be supplied for special applications – we invite your inquiries.

• Obtains bottom samples or samples from any level
• Four different capacities
• Plated brass, stainless steel or acrylic construction
• Standard Viton O-ring seal
• Optional metal-to-metal seal

Sample Thief Extension Rods
Installs in sample thief plunger assembly. Stainless steel with threaded end.

All-Levels Sample Thief
Similar to the standard 16 oz (473mL) Sample Thief (Bacon Bomb), but equipped with an adjustable needle valve opening instead of a plunger to control rate of flow during ‘all-levels’ and ‘running’ sampling from storage tanks. Plated brass construction.

Adjustable-Level Sample Thief
Takes samples at depths up to 12" (30.5cm) from bottom. Similar to the standard 16 oz (473mL) Sample Thief (Bacon Bomb), but with built-in graduated extension rod adjustable between 0-12" (30.5cm). Plated brass construction.

Drum Thief (Sampling Tube)
Choice of plated brass or stainless steel construction. For tube sampling from barrels and drums. Takes bottom samples or all-levels samples. 40" Long x 11⁄4" dia. (102x3.2cm). Maximum sample capacity of 24 oz (710mL). Shipping Weight: 6 lbs (2.7kg).

Weighted Beaker
For beaker sampling from tank cars, tank trucks, shore tanks, ship tanks and barge tanks. Copper or stainless steel construction with weighted bottom. Includes handle and chained cork. Takes all level samples, running samples, and top, upper, middle, lower and outlet samples. Select 3⁄4" (19mm) opening for light crude oils, light lubricating oils, kerosenes, gasolines, transparent gas oils, diesel fuels, and distillates, or 11⁄2" (38mm) for heavy crude and fuel oils, heavy lubricating oils and nontransparent gas oils. Shipping weight: 6 lbs (2.7kg).

• Capacity 32 oz. (946mL)
• Choice of 3⁄4" or 11⁄2" (19 or 38mm) opening

LPG Sample Containers
Welded stainless steel cylinders for obtaining representative samples of liquefied petroleum (LP) gases. Two-valve type (1⁄4 IPS), with 20% outage tube and built-in pressure relief valve factory preset between 540 to 600psi (38-42 kg/cm2).

• Two-valve type with 20% outage tube
• Built-in pressure relief valve
• Conforming to ASTM D1265 and GPA 2140 specifications

Core-Type Sampling Thief (Tulsa Oil Thief)
The K28100, Core-Type Sampling Thief is used to manually obtain samples of a liquid, semi-liquid or solid state whose vapor pressure at ambient conditions is below 101kPa (crude oil, etc.)

• Obtains bottom samples or samples from any level
• Butterfly valve on bottom for easy sampling
• Stainless steel and brass construction
• Three Petcocks for draining at different levels
• Conforms to the specifications of: ASTM D4057
• Capacity: 33oz.
• Empty Weight: 6.187 lbs.
• Sample Container Material: Polycarbonate
• Markings: Every inch from 3" to 14"
• Distance from tank bottom to inlet valve: 1.729"
• Max height: 21"
• Max length: 4.7"
• Max width: 4.2"