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
90 + U.S. Patents
Since 1954
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Diffusing Probe

Diffusing Probe

Uniform Odorization

Designed for use with injection odorizers, Welker’s diffusing probe allows for rapid odorant dispersal across the full diameter of the pipeline, ensuring uniform odorization, even during times of variable flow.

Enhanced Odorant Vaporization

No Drips, No Puddles

Inside the porous probe is a braided nylon wick, which absorbs the liquid odorant. As natural gas flows through the perforations in the probe, the liquid odorant is vaporized more easily and distributed more evenly in the gas stream compared to a traditional drip probe.

Even Distribution
Welker’s diffusing probe is available in the insertion style that meet your pipeline needs. 
Fixed Probe


Choose fixed to install the probe to a depressurized pipeline.

Adjustable Probe


Choose adjustable to insert the probe at lower pipeline pressures.

Automatic Probe


Choose automatic to insert the probe at full pipeline pressure.


Diffusing Probe
Materials of Construction316/316L Stainless Steel, Braided Nylon, Viton®
Inlet Connection1/4" FNPT
Pipeline Connection1/2" MNPT
3/4" MNPT
Operating Pressure1/2" MNPT: 7700 psig @ -20 °F to 120 °F
3/4" MNPT: 7300 psig @ -20 °F to 120 °F
1 MNPT: 5300 psig @ -20 °F to 120 °F