FLP

Create an Internal Isokinetic Fast Loop for Representative Liquid Sampling

The Welker FLP Mini Fast Loop Sampler creates a compact, isokinetic fast loop for representative crude oil, condensate, refined product, and light liquid hydrocarbon sampling. Designed for bypass or main line installation, the FLP collects accurate composite samples directly from flowing pipelines for custody transfer, transmission, LACT unit, separator outlet, and short-batch sampling applications. With automatic insertion, easy retractability, externally adjustable sample volume, and AC or low-voltage DC power options, the FLP helps operators achieve reliable liquid sampling performance in both standard and remote locations.

Where to Use

Composite Sampling

Crude Oil, condensate, or other liquid hydrocarbons

Custody Transfer

Billing-quality measurement at sales points

Complies With:

API 8.2 ASME B16.5

Resources

FLP IOM FLP Data Sheet

Internal Isokinetic Fast Loop

Creates a compact fast loop inside the pipeline to collect representative composite samples of crude oil, condensate, refined products, and other liquid hydrocarbons.

Secured Lock Handle and Cap

Supports reliable, secure operation while helping minimize the risk of spills, damage, or unintended access.

Accessible Sample Collection Head

Allows easier access for inspection and maintenance, helping reduce downtime in standard or remote sampling locations.

AC and Low-Voltage DC Power Options

Provides flexible installation for remote, solar-powered, or traditional power environments.

Externally Adjustable Sample Size

Allows operators to adjust sample volume without retracting the probe or interrupting sampling operations.

Horizontal or Vertical Mounting

Fits a variety of pipeline configurations for greater installation flexibility.

Removable Automatic Insertion Device

Simplifies installation, setup, and maintenance, especially in space-constrained or hard-to-access locations.

	FLP
Products Sampled	Condensate, Crude Oil, Refined Hydrocarbon
Materials of Construction	Insertion Probe: 316/316L Stainless Steel, PLA
Materials of Construction	Pipeline Connection: Carbon Steel or Stainless Steel
Operating Pressure	Carbon Steel Pipeline Connection: ≤ 1480 psig, Stainless Steel Pipeline Connection: ≤ 1440 psig Automatic Insertion Pressure: ≤ 600 psig, Manual Insertion Pressure: 0 psig
Pipeline Connection	1" NPT, 1½" NPT, 2" NPT, 1" or 2" Class 150/300/600 RF
Electrical Connection	½" FNPT
Sample Outlet Connection	¼" FNPT
Insertion Length Options	12", 18", 24", 36" (Standard), Other Lengths Available
Utility Requirements	DC 6 V, DC 12 V, DC 24 V, AC 110–220 V
Sample Volume	0.5 cc–5 cc
	5 cc–10 cc
	10 cc–20 cc
Sample Grab Rate	Up to 30 samples/minute
Minimum Process Pressure	30 psig
Process Viscosity	5–4000 cP
Operating Temperature	Process Media: 150 °F Maximum Ambient: -40 °F to 140 °F
Mounting	Horizontal or Vertical
Industry Standards	API 8.2, ASME B16.5, NEC
Industry Standards	UL, CSA, ATEX (Available Upon Request)

FLP

Where to Use

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