Organic material, such as landfill and feedstock naturally generates biogas. This biogas is purified to produce biomethane, also known as Renewable Natural Gas (RNG), which is an attractive renewable source used for generating energy, such as electricity, heat and fuel.
Europe is the leading producer of biomethane in the transport or distribution gas grids to generate heat and electricity or to fuel transport vehicles. North America is also seeing an increase in RNG production as an alternative energy source.
Biomethane / RNG, like natural gas, is colorless and odorless. So to ensure public safety it must be odorized before being injected into transmission or distribution grids. Biomethane odorization is the process of adding THT or Mercaptan blends (such as TBM, DMS, or other types of odorants) to gas to ensure it is readily detectable to the human nose at one fifth the lower explosive limit (LEL), which is critical for safe gas consumption.
With almost 75 years experience, YZ Systems is the leader in the odorization of natural gas and has specialized odorizers for biomethane / RNG to effectively handle the low-flow and hazardous environments in the industry.
All our systems are designed for ease of service and reliable operation in hazardous areas (ATEX and CID1).
YZ Systems provides robust odorization systems for RNG
LVO Low Volume Odorizer
- Optimised for extremely low gas flows: down to 10Nm3/hr (6.5scfm) which is critical in RNG / Biomethane applications as gas can be very low flow, particularly upon commissioning. When starting up a gas digester, it starts off low and over time it comes up to full production – the LVO perfect for this.
- The NJEX Low Volume Odorization (LVO) system has been a field proven solution for more than 2 decades in North America.
- The new LVO Z-100 controller adds key features such as flow switch for odorant injection confirmation, alarm or odorant output pulse and audit trail for record keeping.
- The tank is situated above, so naturally creates suction and prevents vapour locking.
- Designed for infrequent strokes.
NJEX Odorizer
- Pneumatic operation
- Field-proven as the market leading odorization system in North America.
- Powerful controller to reliably provide proportional-to-flow odorant injection, onboard metering of the odorant injected, system monitoring and alarm notification.
- Additionally the system will document and verify injection rates, performance of each system component, parameter changes and alarms.
- With verometer for pinpoint accuracy: to measure and inject precise amounts of odorant, taking out the guesswork to deliver accurate, reliable odorant injection in any application.
ZEO - Zero Emissions Odorizer
- No methane emissions
- Proven electric pump technology delivers reliability and peace of mind
- With verometer for pinpoint accuracy: to measure and inject precise amounts of odorant, taking out the guesswork to deliver accurate, reliable odorant injection in any application.
- Newest controller with biggest display and plenty of easy-to-use features.
Biomethane Grid Injection: Odorization Solutions for GRDF
GRDF has selected YZ Systems and Milton Roy Europe to supply THT odorization units for biomethane injection sites in France, supporting safe and reliable renewable gas distribution over the next decade. This partnership highlights how accurate odorant injection, local engineering expertise, and proven gas odorization technology help biomethane producers meet the safety and compliance requirements needed for grid-ready RNG.
System Design & ETO
We have an expert in-house team to handle system design and Engineer-to-order (ETO) to meet your specific requirements. We can customize our standard products, custom skid or tank configurations. We can create and construct specific configurations according to your needs.
Aftermarket Services
Complementary to our gas odorizers, YZ Systems offers everything you need to keep your RNG odorization processes running smoothly.
Our Aftermarket Services include: 24/7/365 support, installation and commissioning, service, training and genuine spares. Our reliable products and exceptional service deliver peace of mind.
Explore our RNG Value Chain RNG
Renewable natural gas production relies on a network of technologies that transform organic waste into a pipeline-ready renewable fuel. YZ Systems is part of Ingersoll Rand, which offers the full range of solutions covering all aspects of the RNG process. The global ecosystem of companies include manufacturers of natural gas compressors, blowers and vacuum solutions for extraction, as well as pumps, loading arms and odorization systems, with integrated specialized IIoT systems for remote monitoring.
LERoy RNG Compressors
Once biogas has been cleaned and upgraded, reliable gas compression becomes essential for processing, storage, transportation, and pipeline injection. Explore how RNG compressors help move biomethane efficiently through the value chain while handling challenging gas compositions and demanding operating conditions.
HOFFMAN & LAMSON Blowers
Modern landfill gas systems do more than control emissions. They transform methane-rich waste gas into a valuable renewable energy resource. Discover the technologies and equipment used to safely extract, capture, and prepare landfill gas for flaring, power generation, or upgrading into renewable natural gas (RNG).
NASH Vacuum Solutions
Efficient biogas production depends on every stage of the process, from gas extraction and conditioning to upgrading and compression. Learn how advanced vacuum and compression technologies help maximize methane recovery, improve system reliability, and support the production of high-quality renewable natural gas.
Milton Roy Chemical Dosing Solutions
Reliable RNG production relies on accurate chemical dosing across multiple process stages, including anaerobic digestion, gas cleaning, H₂S removal, water treatment, and utility systems. Explore how advanced metering technologies deliver the precision, repeatability, and operational reliability needed to optimize performance, safeguard critical assets, and support long-term renewable gas production.
Ingersoll Rand Dryers
Moisture, contaminants, and particulates can impact the performance of downstream RNG equipment and infrastructure. Discover why effective drying and filtration are critical for protecting compressors, improving gas quality, and ensuring reliable operation throughout the renewable natural gas process.
YZ Gas Odorization Systems
Before renewable natural gas can be distributed safely through pipeline networks, proper odorization is essential. Explore how modern odorant injection systems help utilities and operators meet safety requirements, maintain regulatory compliance, and ensure reliable odorant monitoring and control.
Emco Wheaton Biogas Loading / Unloading Arms
As RNG production grows, safe and efficient transfer solutions become increasingly important. Learn how specialized loading arms support the handling of biomethane and renewable gases across truck, rail, marine, and storage applications while improving safety and operational efficiency.
AIRCOM Digital Monitoring & Industrial IoT for RNG Facilities
Connected technologies are transforming how renewable gas assets are monitored and managed. Discover how Industrial IoT solutions enable real-time visibility, remote monitoring, predictive maintenance, and data-driven decision making across biogas and renewable natural gas operations.
From waste to wheels
A major European urban community turned wastewater into clean vehicle fuel — and needed an odorization solution tough enough for outdoor, unmanned operation. See how the LVO delivered full autonomy, zero electrical dependency, and over one year between refills in a real-world bioCNG mobility project.