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inFlow™ ACE Crude Oil Sampler

Where to Use

Main line isokinetic composite sampling of condensate, crude oil, or other liquid hydrocarbons

      • All custody transfer applications
      • Transmission pipelines
      • High-speed sampling for short sample batches
Patented Sample API 8.2 ASTM D4177 ISO 3171  

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 with the Welker inFlow™ ACE Crude Oil Sampler. This patented main line isokinetic sample extractor covers all conditions you might encounter, whether you’re sampling condensate, crude oil, or other liquid hydrocarbons. With an adjustable insertion length and sample volume, fast sample speeds, shaft and seal protection, purge tube, and optional insertion tool, adapt the inFlow™ ACE to meet your changing needs and maintain sample integrity.


  • Double-acting piston motor
  • Manual or automatic insertion with insertion tool (optional)
  • Adjustable insertion length
  • Coated 316/316L stainless steel solid bar insertion shaft
  • Sand reliefs
  • Adjustable volume positive displacement collection heads
  • External sample volume adjustment
  • Welker Purge Tube
  • Collection head with inline relief


  • Pumping power capable of sampling high-viscosity products
  • Insert and retract the shaft under reduced or full pipeline pressure
  • Retractable shaft allows for pipeline pigging and inspection or equipment maintenance without costly shutdowns
  • Sample products containing basic sediment and water (BS&W) without the extra wear and tear
  • Reach the center third of most transmission pipelines
  • Capture and fully push samples to the sample container
  • With adjustable collection heads, collect large grabs for small volume batches
  • Change sample grab size without removing the sample extractor from the pipeline
  • Purge trapped liquid from the collection head to the sample container for a complete composite sample and to prevent batch cross-contamination
  • Inline relief prevents collected samples from flowing back to the pipeline if pipeline pressure drops
inFlow™ ACE Crude Oil Sampler
More Information
Product Category : Crude Oil Sampling
Composite Sampler
Materials of Construction : 316/316L Stainless Steel Wetted Parts, Anodized Aluminum Upper Housing, Carbon Steel Lubricator Body, PTFE, FKM Wetted Seals, Buna and FKM Non-Wetted Seals
Maximum Allowable Operating Pressure : 150 ANSI Carbon Steel: 285 psig @ -20 °F to 100 °F
300 ANSI Carbon Steel: 740 psig @ -20 °F to 100 °F
600 ANSI Carbon Steel: 1480 psig @ -20 °F to 100 °F
Pipeline Connection : Size: 2"
Rating: 150, 300, or 600 ANSI RF
Sample Outlet : ¼" FNPT
Insertion Length : 0–24"
Utility Requirements : Hydraulic or Pneumatic Supply for Motor Operation: 100–150 psig
Inert Gas Supply for Purge Operation: ¼" FNPT Connection
Sample Volume : D-Style Collection Head: 0.5–10 cc (Standard)
C-Style Collection Head: 3–24 cc

Weight and/or dimensions are approximate.

Specifications subject to change without notice.

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