281.491.2331 13839 West Bellfort Street Sugar Land, Texas
281.491.2331 13839 West Bellfort Street Sugar Land, Texas
ISO 9001:2015
U.S. Patents
90 + U.S. Patents
Since 1954
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inLoop™ ACE

Where to Use

Bypass composite sampling of light and medium crude oil and refined hydrocarbons

      • High-speed sampling for short sample batches
      • Sample lines up to 1”

Isokinetic Bypass Crude Oil Sampler

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.

inLoop ACE
No Restrictions

Quality Sample Grabs

Collect representative samples with the inLoop™ ACE. The large bore in the body of this inline sampler does not restrict the flow rate of product through the fast loop, thus ensuring the collection of isokinetic samples. Add the purge option to further improve sample representativeness by reducing the risk of cross‑contamination between sample batches.

Outer Limits

External Sample Volume Adjustment

With an externally adjustable sample volume, the inLoop™ ACE can be easily set from 0.5–5 cc to suit your sampling requirements. This larger range of sample volumes means the sampler does not have to be operated as fast as similar samplers, which in turn prevents wear and tear.

External Adjustment
Sample Grab
The Need for Speed

High-Speed Capable

The size of the actuation ports improves the flow of hydraulics or pneumatics, allowing for high-speed sampling for short batches. Depending on product viscosity and operating pressure, the inLoop™ ACE is capable of collecting up to 30 sample grabs per minute.

Out With the Old, in With the New

Upgrade to Welker

Customizable process connections enable the inLoop™ ACE to easily fit in an existing installation as part of a retrofit or be the centerpiece of a new system.

Process Connection


inLoop ACE Crude Oil Sampler
inLoop ACE
Materials of Construction316/316L Stainless Steel Wetted Parts, (Anodized) Aluminum Non-Wetted Parts
Seal Material OptionsViton®
Kalrez® Wetted, Viton® Non-Wetted
Viscosity RangeUp to 4000 cP
Process Connection and Operating Pressure Options1" FNPT or VCO: 1480 psig MAOP @ -20 °F to 100 °F
1" – 150 ANSI Stainless Steel: 275 psig MAOP @ -20 °F to 100 °F
1" – 300 ANSI Stainless Steel: 720 psig MAOP @ -20 °F to 100 °F
1" – 600 ANSI Stainless Steel: 1440 psig MAOP @ -20 °F to 100 °F
Ambient Temperature-20 °F to 120 °F
Operating Temperature*20 °F to 200 °F
Utility RequirementsHydraulic or Pneumatic Supply: 30–200 psig, Actuation Consumption (per Sample Grab @ 80 psig): 0.06 ft³
Sample Volume0.5–5 cc (Adjustable)
Sample Grab RateUp to 30 Grabs per Minute**
Industry StandardsComplies With API 8.2 and ISO 3171

*Contact Welker for Special Requirements
** Sample Grab Rate Dependent on Product Viscosity and Operating Pressure