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inFlow™ (Fixed) Crude Oil Extractor

Where to Use

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

      • On 2”–4” sample lines
      • Downstream of a separator
      • On a Lease Automatic Custody Transfer (LACT) Unit
Sample API 8.2 ASTM D4177 ISO 3171    

Because a quality sample counts no matter the size of your line, we’ve scaled the top features of our inFlow™ Crude Oil Sampler to fit 2”–4” pipelines. Direct-mount or with a pipe spool, the fixed insertion length of the inFlow™ reaches the center one-third to collect isokinetic samples of condensate, crude oil, or other liquid hydrocarbons. Sized for bypass sampling or small main lines, the inFlow™ is also well-suited for use downstream of separators and on Lease Automatic Custody Transfer (LACT) Units for truck and rail car loading and unloading.


  • Double-acting piston motor
  • Fixed insertion
  • Fixed or adjustable volume positive displacement collection heads
  • Welker Volume Eliminator
  • Collection head with inline relief
  • Optional pipe spool with or without mixer
  • Optional sand reliefs
  • Optional Welker Purge Tube


  • Pumping power capable of sampling high-viscosity products
  • Capture and fully push samples to the sample container
  • With an adjustable collection heads, collect larger grabs for smaller volume batches
  • Minimize sample retention and keep residual sample at a minimum
  • Inline relief prevents collected samples from flowing back to the pipeline if pipeline pressure drops
  • Improve sample accuracy on Lease Automatic Custody Transfer (LACT) Units for truck and rail car loading and unloading (optional)
  • Pipe spool with integrated static mixer ensures a homogeneous mix reaches the sample extractor (optional)
  • Sample products containing basic sediment and water (BS&W) without the extra wear and tear (optional)
  • Purge trapped liquid from the collection head to the sample container for a complete composite sample and to prevent batch cross-contamination (optional)
inFlow™ (Fixed) Crude Oil Extractor
More Information
Product Category : Crude Oil Sampling
Crude Oil Extractor
Materials of Construction : 316/316L Stainless Steel Wetted Parts, Carbon Steel Motor and Base, PTFE, Buna Non-Wetted Seals, and FKM Wetted Seals
Pipeline Connection : NPT: 1 ¼", 2"
Size: 2" (Standard), 3", 4"
Rating:150, 300, or 600 ANSI RF
Sample Outlet : ¼" FNPT
Insertion Length : 4 ½" (Without Shaft Extension) (Standard)
6 ¼" (With Shaft Extension) (Standard)
Others Available
Utility Requirements : Hydraulic or Pneumatic Supply for Motor Operation: 50 psig
Inert Gas Supply for Purge Operation: ¼" FNPT Connection (Optional)

Weight and/or dimensions are approximate.

Specifications subject to change without notice.

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