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OdorEyes by Welker Accu/Line Hi Odorization System

Accu/Line™ Hi

Smart high-flow odorant injection for large natural gas pipeline systems

The Welker Accu/Line™ Hi is a natural gas injection odorization system designed for high-flow transmission pipelines, distribution pipelines, compressor stations, power plants, peaking facilities, municipalities, and renewable natural gas applications. Built for flow rates from 50 Mscfh up to 70 MMscfh and maximum operating pressure up to 1800 psig, the Accu/Line™ Hi automatically adjusts odorant injection rate to changing flow conditions for continuous proportional-to-flow odorization. With an intuitive touch screen controller, Modbus or Ethernet remote monitoring, microSD audit trail and alarm logging, redundant pumps with automatic failover, and self-priming pumps, the Accu/Line™ Hi supports reliable odorant delivery in demanding high-flow applications.

Where to Use

High-Pressure Natural Gas Odorization

Turnkey odorant injection for transmission pipelines, distribution pipelines, compressor stations, power plants, and peaking facilities.

Municipal and Utility Odorization

Reliable proportional-to-flow odorization for municipalities and gas utility operations.

Renewable Natural Gas Odorization

Odorant injection for RNG, biogas, and biomethane applications with higher flow demands.


Touch Screen Controller

Automatically adjusts the injection rate to changing flow conditions for continuous proportional-to-flow odorization.

Remote Monitoring Using Modbus or Ethernet

Allows off-site system monitoring and troubleshooting for improved operational visibility.

Audit Trail and Alarm Log on microSD Card

Provides time- and date-stamped historical records for reporting, planning, and maintenance scheduling.

Redundant Pumps With Automatic Failover

Helps limit interruptions to odorization by switching pump operation when needed.

Self-Priming Pumps

Helps eliminate vapor lock for dependable odorant delivery.

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