Certified
ISO 9001:2015
Innovation
90+ U.S. Patents
Worldwide
Global Support
Experts
Since 1954
Certified
ISO 9001:2015
Innovation
90+ U.S. Patents
Worldwide
Global Support
Experts
Since 1954
Manufacturing Excellence Since 1954
Precision-engineered sampling, revolutionary odorization, and the original instrument gas conditioning system — all designed, manufactured, and backed by Welker.
Years of Manufacturing
U.S. Patents
9001:2015 Certified
Reach, Local Expertise
Built by the
Experts Who
Designed It
When it’s Welker Made™, you’re working directly with the engineers who designed and manufactured the critical components — not an integrator sourcing parts from multiple vendors. From concept to commissioning, it’s engineered, built, quality-verified, and backed entirely by Welker.
Integrators assemble systems from third-party components. Welker is different: we design and manufacture the probes, samplers, conditioners, cylinders, and odorization hardware that make up our turnkey systems — under one roof, to one standard of quality. That means single-source accountability and unmatched application expertise from pipeline to analysis.
Manufacture
Critical components built in-house to exact engineering specifications
Engineer
90+ U.S. patents and decades of original application-driven innovation
Test
Every system designed, built, and tested under one roof before it ships
ISO Certified
ISO 9001:2015 certified quality management across all product lines
Support
Domestic and international partners backed by Welker factory expertise
Accountable
Single-source responsibility from design through field commissioning
Turnkey Sampling Systems
From pipeline to analysis, Welker's turnkey sampling systems deliver reliable results in the harshest environments. Our engineered solutions combine proven probe technology, sample conditioning, and precision collection systems for seamless integration at every point in your process.
Accurate sampling takes more than equipment — it takes deep knowledge of the entire process. Welker engineers and manufactures complete sampling solutions, from probes and conditioning panels to cylinders and collection systems, ensuring every part works together for reliable, representative results.
Engineered for precision, safety, and sustainability, OdorEyes™ delivers complete, smart-odorization solutions trusted by utilities and pipeline operators across North America and beyond. From pumpless systems and odorant monitors to eliminators, flares, and spill kits — Welker’s OdorEyes™ line provides reliable, zero-emissions performance built with the environment and technician in mind.
Every OdorEyes™ system is engineered with real field conditions in mind — helping reduce maintenance, simplify service, and limit odorant exposure for technicians. With pumpless, zero-emissions solutions designed and manufactured by Welker, operators can achieve reliable odorization performance while supporting safer worksites and cleaner operations.
Zero Emissions Design
Pumpless ECOsystem™ technology eliminates pipeline gas as instrument supply, meeting today's ESG and regulatory demands.
Smart Control
Proprietary algorithms monitor pressure, temperature, and flow rate in real-time for exceptional odorization accuracy.
Complete System
From injection system to odorant monitor and eliminator — one manufacturer, one warranty, one support team.
Technician Safety
Designed to minimize odorant exposure during service with downstream tank placement and minimal moving parts.
Wide Flow Range
Solutions spanning 1 Mscfh to 70 MMscfh at pressures up to 1800 psig across low, high, and variable flow conditions.
Portable Options
Portable odorizers available for interim service during downtime, maintenance, or pipeline commissioning.
The
Original
Instrument Grade Gas Conditioning System
For decades, Welker’s CleanFlow™ has set the global standard for delivering clean, dry, conditioned gas to instrumentation and pneumatic controls. Engineered for continuous reliability, CleanFlow™ systems remove liquid hydrocarbons, contaminants, and moisture from pipeline gas — protecting your critical measurement and control equipment under any operating condition.
Integrators assemble systems from third-party components. Welker is different: we design and manufacture the probes, samplers, conditioners, cylinders, and odorization hardware that make up our turnkey systems — under one roof, to one standard of quality. That means single-source accountability and unmatched application expertise from pipeline to analysis.
Application
Pneumatic Instrumentation Supply
Removes
Liquids, Contaminants & Moisture
Removes
Liquids, Contaminants & Moisture
The Gold Standard In Sample Integrity
Precision-engineered and manufactured to industry-leading standards, Welker constant pressure cylinders maintain the integrity of your natural gas or liquid sample from the point of collection through laboratory analysis — ensuring accurate, repeatable results every time.
Welker manufactures constant pressure cylinders in-house, allowing us to maintain tighter dimensional tolerances, material traceability, and compliance documentation that third-party sourced cylinders simply cannot match.
Natural Gas Cylinders
Constant pressure design preserves sample composition from pipeline to lab
Light Liquid Containers
Constant pressure containers designed for light liquid and LNG sampling
Carrying Cases
DOT-compliant transport cases engineered to protect sample integrity in transit
The Gold Standard In Sample Integrity
Precision-engineered and manufactured to industry-leading standards, Welker constant pressure cylinders maintain the integrity of your natural gas or liquid sample from the point of collection through laboratory analysis — ensuring accurate, repeatable results every time.
Welker manufactures constant pressure cylinders in-house, allowing us to maintain tighter dimensional tolerances, material traceability, and compliance documentation that third-party sourced cylinders simply cannot match.
Natural Gas Sampling Probes
Composite and spot sampling probes for dry and wet gas applications
IRA Probe Regulators
Continuous representative samples delivered at analyzer pressure for high-volume lines
Light Liquid Probes
Purpose-built for representative liquid sampling in light hydrocarbon pipelines
