Flow control solutions for petrochemical

The IMI Critical engineer inspects power plant flow control systems for performance and safety, and recommends the best solutions for optimal efficiency.

Custom-engineered valves for petrochemical applications

We offer custom-engineered valves for critical applications in the petrochemical sector. Leveraging our decades of experience in the refining, chemical, fertiliser, ethylene, and ammonia industries, we have developed world-leading valve technologies designed to optimise plant performance and safety.

Our valve solutions excel in delayed coking, Catofin® (propane dehydrogenation), ethylene, and fluid catalytic cracking (FCC), meeting the specifications of process licensors such as UOP, Lummus, CB&I, and Exxon.


Drawing upon extensive expertise spanning decades, we have developed world-leading valve technologies meticulously designed to enhance plant performance and safety.

Substances stored in petrochemical plants, identified by their blue-colored containers


Chemical production relies on chemistry and engineering to create products like vitamins, oxygen, cosmetics, and raw materials. To maintain purity, clean production lines are essential. IMI Critical valves endure high pressure, temperature, and corrosion in chemical production, while being made in contamination-free clean rooms, especially crucial for oxygen production.

A robust, shiny metal ammonia storage tank with pipes and equipment is used in the petrochemical refinery for high-pressure iron storage.

Fertiliser & ammonia

Ammonia is crucial for fertilisers and various industries. IMI Critical supplies valves for ammonia production, ensuring precise control under extreme conditions. Nitrogen-based fertilisers are vital for plants, and ammonia is produced by combining nitrogen from air with hydrogen. It is used to make nitrate fertilisers or mixed with carbon dioxide to create urea. Therefore, ammonia plants are commonly integrated into fertiliser production facilities.

Plastic resin factory against blue sky, green scrub land in foreground. Valves play a vital role in the production process.


Ethylene is a crucial building block for everyday goods. IMI Critical is the leading supplier of severe service valves for ethylene production, including furnace isolation valves and a state-of-the-art double disc through conduit (DDTC) gate valve design. We also provide control, bypass, anti-surge, steam control, and isolation valves, with a substantial global presence in ethylene plants.

An oil and gas refinery is a large industrial plant that processes crude oil and natural gas to produce a range of refined products, including gasoline, diesel, jet fuel, and petrochemicals

Looking for refinery products?

Find out more about our refinery solutions in oil and gas.

In valve manufacturing, lathes are used to shape the metal parts that make up the valve body, stem, and other components. The precision and accuracy of a lathe make it possible to create parts with tight tolerances and a high level of consistency, which is essential in the manufacturing of valves.

Global expertise and manufacturing

IMI Critical Engineering’s dedicated team of over 2,900 experts, manufacturing facilities spanning 12 countries and a global network service, is committed to delivering precision-engineered flow control solutions, expert installation, and lifetime servicing. A deep understanding of the entire process enables us to provide tailored solutions that ensure unparalleled reliability and performance.