281.491.2331 13839 West Bellfort Street Sugar Land, TX
281.491.2331 13839 West Bellfort Street Sugar Land, TX
ISO 9001:2015
U.S. Patents
80 + U.S. Patents
Since 1954
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The Welker GSS-4PM Composite Gas Sampler extracts a sample from the flowing product in the pipeline and uses positive displacement to capture a representative sample.

inFlow™ ACE Crude Oil Sampler

When you transmit crude oil, you never know what you’ll have in your line. Variations in product characteristics and batch size and delivery make selecting the right sample extractor a challenge. Take the guesswork out of the equation […]
inFlow ACE


Welker’s all-in-one, one-of-a-kind pumpless vapor injection odorizer for proportional to flow natural gas odorization in low, high, and variable flow conditions.


The Welker OIP Oil Injection Pump System is engineered to inject a small volume of oil into the bearings of turbine style meters, reducing the maintenance required to keep bearings properly lubricated, while improving overall meter performance.
inLoop ACE

inLoop™ ACE

The ideal sampler for bypass sampling systems, the Welker inLoop™ ACE Crude Oil Sampler collects repeatable representative samples of light and medium crude oil and refined hydrocarbons.
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