Oil & Gas Instrumentation Optimized for Performance and Reliability
Pressure Switches and Measurement Solutions for Oil & Gas Applications
When it comes to petroleum operations situated in extreme and demanding environments, you need oil & gas instrumentation you can trust. M.L. Johnson Company has been providing high-quality measurement solutions tailored to the specific needs of the oil and gas sector since 1964.
Our expertise in flow, level, pressure, and temperature measurement ensures your operations are efficient and safe, reducing downtime and enhancing productivity. Our experts are ready to help with everything from one-off replacement parts to full-scale process overhauls.

Specialized Instrumentation for Oil & Gas Facilities
Advanced Measurement and Safety Solutions for Critical Operations
Accuracy, reliability, and safety are key for process management in your oil & gas facility.
Electromagnetic Flowmeters (Seametrics)
Known for their reliability and accuracy, these flowmeters provide precise flow measurement without contacting the fluid, essential for maintaining the quality and integrity of oil and gas products. Seametrics’ paddlewheel and turbine flowmeters are also suitable for less viscous fluids, making them versatile for various applications within the industry.
Clamp-On and Doppler Flowmeters (Pulsar Measurement)
Pulsar offers advanced non-intrusive flow measurement technology, including Doppler and Transit-Time Clamp-On Flowmeters, along with Battery-Powered Ultrasonic Flowmeters. These devices are ideal for applications where maintaining system integrity and avoiding contamination are paramount, ensuring the safe handling of hydrocarbons and chemicals.
Thermal Dispersion Flow Meters and Switches (Fluid Components International - FCI)
Flow Elements and Venturi Tube Flow Elements (QPS - Quality Products & Sales)
Safety Relief Valves
Pressure Reducing Regulators and Control Valves
Pressure Transducers
Ultrasonic Level Transmitters
Radar Level Transmitters
Critical Protection Against Fire Hazards

Enhancing Safety with Flame Arrestors
Flame arrestors are an essential component of safety systems in the oil and gas industry, particularly in environments where flammable gases or vapors are processed or stored.
These devices are crucial for preventing the propagation of flames into critical areas that could lead to catastrophic fires or explosions.
Storage Tank Safety
Installed on vents and flue gas lines, flame arrestors prevent flames from entering storage tanks containing volatile oil or gas, safeguarding against explosions.
Vapor Recovery Units
By preventing flames from traveling back into vapor recovery systems, flame arrestors ensure the safe handling and processing of combustible vapors, protecting both equipment and personnel.
Why Partner with us
Deep Industry Expertise
With decades of experience in the oil and gas industry, M.L. Johnson Company understands the complexities and challenges of this sector. Our skilled team uses their in-depth knowledge to provide solutions that not only meet but exceed industry standards.
Tailored Solutions for Unique Challenges
We recognize that no two oil and gas operations are the same. M.L. Johnson offers customized solutions that are designed to address your specific challenges and requirements, ensuring optimal performance and compliance with all regulatory standards.
Reliable and Durable Equipment
Our products are engineered to withstand the rigors of oil and gas environments, ensuring long-term reliability and performance. We provide measurement and safety equipment that you can depend on, reducing maintenance costs and downtime.
Responsive and Accessible Support
We serve Kentucky, Ohio, Indiana, and West Virginia, where our support teams are well-positioned to provide fast and efficient service. Whether you need routine maintenance, emergency support, or expert advice, M.L. Johnson is here to help.
Complying with Safety and Environmental Standards

Instrumentation Rated for Hazardous Areas
Understanding the importance of safety in hazardous environments, M.L. Johnson Company provides instrumentation specifically rated for use in such areas. Our products meet rigorous safety standards to ensure they can operate effectively and safely in the presence of flammable gases, vapors, and dust.

Addressing EPA Requirements
In response to stringent EPA regulations concerning off-gassing and spills, we offer solutions designed to minimize environmental impact. Our systems include advanced sensors and automated technologies that help detect and manage off-gassing, ensuring compliance with environmental regulations and helping to protect ecosystems.

Petroleum Spill Prevention and Detection
To prevent petroleum spills and detect them promptly if they occur, M.L. Johnson Company implements state-of-the-art detection systems that provide real-time alerts. These systems enable rapid response to potential leaks or spills, mitigating environmental damage and avoiding regulatory penalties.
Contact Us to Elevate Your Operations
Enhance the efficiency and safety of your oil and gas operations with M.L. Johnson Company’s superior measurement and control solutions. To discuss your specific application with our experts, contact us today. Let us help you drive better performance and achieve outstanding results in your projects.