Nordstone is a premier Knock-Out Drum (KO Drum) manufacturer in UAE, delivering high-performance two-phase and three-phase separation systems engineered for critical industrial applications. Backed by over 20 years of expertise and state-of-the-art production facilities, we specialize in designing custom vapor-liquid separators that protect downstream equipment—like compressors, flares, and turbines—from liquid carryover. As trusted industrial vessel fabricators, we precision-engineer horizontal and vertical KO drums to manage extreme pressures, high temperatures, and highly corrosive environments. Our deep technical mastery allows us to serve the region’s most demanding sectors, including Oil & Gas, petrochemical processing, and heavy manufacturing across Abu Dhabi, Dubai, and the wider GCC region.
By strictly adhering to international design codes like ASME Section VIII, API 521, and ISO certifications, Nordstone guarantees uncompromised reliability, operational safety, and optimal fluid dynamics for your plant’s infrastructure.
Why Choose Nordstone as Your Pressure Vessel Partner?
- Two Decades of Proven Expertise: With a 20-year track record of engineering triumphs across the Middle East, our technical authority is built on real-world reliability.
- Certified Compliance: Every vessel is fabricated in strict accordance with ASME Section VIII (Div 1 & 2), API 521 relief system guidelines, and international ISO standards.
- Tailored Engineering: From targeted mesh pad mist eliminators and vane packs to custom nozzles and corrosion-resistant alloys (such as Inconel, Duplex, and SS316), we build to your exact process datasheets.
- Locally Rooted, Globally Trusted: Seamlessly supply projects across major industrial hubs like Ruwais, ICAD, Jebel Ali, and international energy corridors.
Frequently Asked Questions (FAQs)
1. What is a Knock-Out Drum (KO Drum) and how does it function?
A Knock-Out Drum (also known as a vapor-liquid separator) is a specialized pressure vessel designed to separate entrained liquid droplets from a gas stream. It operates primarily on the principles of gravity segregation and sudden velocity reduction, allowing heavier liquid phases to drop to the bottom while the cleaned vapor exits through the top.
2. Why are KO Drums critical in UAE Oil & Gas operations?
In the UAE’s massive oil, gas, and petrochemical infrastructures, KO Drums protect expensive downstream equipment. They prevent liquid slugs and mist from entering gas compressors (which can cause catastrophic mechanical failure) and ensure safe liquid separation before gas reaches flare stacks.
3. What international design codes does Nordstone follow for KO Drum fabrication?
We fabricate all industrial vessels in accordance with international standards, primarily ASME Section VIII Division 1 & 2 for pressure containment, API 521 for pressure-relieving and depressuring systems, and ISO 9001 for strict quality management.
4. Can you manufacture both vertical and horizontal Knock-Out Drums?
Yes. Based on your space constraints, flow rates, and liquid storage volume requirements, we engineer both configurations. Horizontal KO Drums are typically preferred for large liquid volumes or slug handling, while Vertical KO Drums excel when vapor loads dominate or plot space is limited.
5. What materials of construction (MOC) do you use for corrosive environments?
To withstand sour gas ($H_2S$) and high-salinity coastal environments common in the UAE, we utilize high-grade Carbon Steel with corrosion allowances, Stainless Steel (SS304, SS316), Duplex, Super Duplex, and specialized exotic alloy claddings like Inconel.
6. What types of internals are integrated into a Nordstone KO Drum?
Depending on the separation efficiency required, we incorporate internal components such as inlet deflector baffles, tangential cyclones, mesh pad mist eliminators (demisters), and high-capacity vane packs to capture ultra-fine droplets.
7. What is the role of a mist eliminator inside a vapor-liquid separator?
A mist eliminator or demister pad forces fine liquid droplets carried by rising vapor to coalesce into larger drops. Once these drops become too heavy to be sustained by the vapor velocity, they fall by gravity into the liquid collection section, achieving up to 99.9% separation efficiency.
8. How does Nordstone handle quality control and vessel testing?
Our rigorous quality control framework includes extensive Non-Destructive Testing (NDT) such as Radiographic Testing (RT), Ultrasonic Testing (UT), Magnetic Particle Testing (MT), and final Hydrostatic pressure testing to guarantee zero-defect manufacturing.
9. Do you provide custom-engineered KO Drums based on proprietary process data?
Absolutely. Our in-house thermal and mechanical engineering teams use advanced design software to translate your specific process conditions—such as molecular weight, operating pressure, temperature, and flow velocities—into a perfectly optimized custom vessel.
10. What instrumentation and nozzles come standard with your KO Drums?
Our vessels feature custom-positioned nozzles for vapor inlets/outlets, liquid drains, relief valves, and advanced instrumentation hookups including liquid level controllers, gauge glasses, pressure transmitters, and temperature sensors.
11. How do you design KO Drums to handle unexpected liquid slugs?
We calculate the liquid surge capacity based on your project’s specific process dynamics, ensuring the vessel volume can hold a specified volume of liquid (e.g., 10 to 30 minutes of normal flow or a calculated emergency slug volume) without disrupting operations.
12. Are Nordstone vessels certified for use in hazardous areas in the Middle East?
Yes, our design and manufacturing processes are compliant with major international and regional energy operator standards, allowing our certified vessels to be deployed safely in Zone 1 and Zone 2 hazardous industrial environments.
13. What is the typical lead time for a custom KO Drum delivery in the UAE?
Lead times vary depending on the size, material availability (exotic alloys vs. standard carbon steel), and complexity of the internal systems. Contact our technical sales team for an accurate project timeline tailored to your schedule.
14. Do your engineering services include post-fabrication site support?
Yes, Nordstone provides comprehensive technical documentation, installation guidance, and supervision during commissioning to ensure the vessel integrates seamlessly into your plant network.
15. How can we request a technical quote or engineering consultation?
You can get in direct contact with our engineering and estimation teams by visiting our dedicated response portal at Contact Us to securely submit your process datasheets and project requirements.