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Welker Essentials Light Liquid Sample Pump

Essentials™ Light Liquid Sampler

Economical composite sampling for low-volume NGL and light liquid streams

The Welker Essentials™ Light Liquid Sampler is a compact, double-acting positive displacement pump designed for representative composite sampling of low-volume natural gas liquid streams. Built for flow-proportional light liquid sampling in natural gas plants, refineries, and custody transfer applications, this bypass sample pump connects with a solenoid, pneumatic supply, controller signal, and constant pressure cylinder with internal mixer to create a complete liquid sampling system. With a compact footprint, probe-mounted isolation valves, economical design, and direct sampling from the flowing product, the Essentials™ Light Liquid Sampler supports accurate composition analysis and quality control.

Where to Use

Low-Volume Light Liquid Sampling

Composite sampling of low-volume natural gas liquid streams from approximately 100–4000 bbl/d.

Natural Gas Plants and Refineries

Light liquid sampling for composition analysis, quality control, and backup sampling when online analyzers are unavailable.

Custody Transfer Applications

Flow-proportional composite sampling where accurate representative samples are required for measurement confidence.


Representative Composite Sampling

Samples directly from flowing product to help deliver accurate, representative light liquid samples.

Probe-Mounted With Isolation Valves

Allows maintenance without interrupting flow, helping reduce downtime in plant and refinery operations.

Compact Footprint

Saves space in tight sampling system installations.

Economical Design

Provides a cost-effective sampling option for low-volume NGL and light liquid applications.

Positive Displacement Pump

Supports repeatable sample collection proportional to flow for composition analysis, quality control, and custody transfer.

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