DCU Delay Coking Unit Valve

Delay coking unit valve, also know as coker/ coking valve is a special type of ball valve, which is a dedicated valve designed for delayed coking units. It adopts floating or trunnion structure, and the sealing surface of the valve seat is surfacing with hard alloy. Its working principle is to achieve opening and closing by rotating the ball 90° around the valve stem axis. The sealing pairs are ground and matched, providing excellent sealing performance. Its advantages lie in its high-temperature resistance, wear resistance, anti-coking, flexible switching and long service life. It is mainly applied to the opening and closing control of high-temperature medium pipelines in delayed coking units of the petroleum refining and chemical industry, such as the feeding and oil throwing pipelines of coke towers. TIPVALVE has learned the coking valve technology of Velan and Mogas, conducted in-depth research and continuous improvement, finally formed its own unique design. The independently produced coking ball valves have anti-coking and coking cutting functions and have been successfully applied in engineering projects such as the TAIF/ Komsomolsk refinery.

Design Feature：

‌Continuous purging design

Lowest life-cycle costs

Rubust body construction

Self-cleaning seat

Proprietary metal-lapped hard coating

Bellows spring

Lapped metal thrust bearing

Recirculation purge connection

Uni-directional or bi-directional seal

Production Standard：

Design	API 6D / API 608 / BS 5351
Face to Face	API 6D / ASME B16.10
Flange End	ASME B16.5 / ASME B16.47 / GOST 33259
Butt-welding End	ASME B16.25
Test	API 6D / API 598
Fire Safe	API 607 / API 6FA

Technical Specification：

Size	1” ~ 32”
Class	150Lb ~ 2500Lb
Connection	Flange / Butt weld / Socket weld
Operation	Worm Gear / Electric actuator
Temperature	-29℃ to +650℃
Application	High-temperature coking oil and gas, residual oil, steam, water, etc.

Material Option：

Body	WC5 / WC9 / C5 / CF8 / CF8M / F9 / F22
Ball	A217 CA6NM / A182 F6NM+CrC / A217 C12+ STL 6 / A487 CA6NM+Hard CHR., etc.
Stem	A182 F6NM / A487 CA6NM (Class A) + Hard CHR / A479 410 (COND 2), etc.
Seat	A182 F6A+STL / A182 F9+STL / A182 F5+STL / CoCr alloy, etc.

Technical Advantages:

Advanced Thermal Resistance: These high temperature ball valves feature specialized hard alloy surfacing, ensuring continuous operation under extreme refinery heat.

Superior Anti-Coking Design: Our independently produced coker ball valves possess advanced anti-coking and coke-cutting functions.

Proven Engineering Expertise: As an experienced ball valve manufacturer, TIPVALVE improved upon Velan and Mogas technologies to deliver unique, long-lasting designs.

Extended Operational Service Life: The robust, low-friction design reduces mechanical wear, drastically lowering maintenance downtime across demanding refinery lifecycles.

Versatile Applications:

Critical Coke Tower Lines: Essential valves used in petroleum industry systems for managing feeding and oil-throwing pipelines of coke towers.

Petroleum Refining Units: High-performance flow control solutions designed for delayed coking units within the global oil and chemical industry.

Severe Global Projects: Proven reliability successfully applied in high-stress refinery engineering projects like the TAIF/ Komsomolsk refineries.

FAQs:

What is a coking valve used for?

A specialized coking valve is engineered to isolate and control heavy residual oil and petroleum coke streams in severe delayed coking units.

Why are coker ball valves critical in refining?

High-performance coker ball valves feature continuous steam purging to prevent aggressive coke buildup from jamming the valve internals during operation.

How do coker valves handle severe thermal shock?

Premium coker valves utilize advanced seat designs and robust materials to withstand rapid temperature swings during the decoking and heating cycles.

What makes these ideal high temperature ball valves?

These high temperature ball valves incorporate robust seats and heat-resistant alloys, maintaining tight shutoff at temperatures exceeding 600°C.

What roles do these play in petrochemical facilities?

As essential valves used in petroleum industry processes, they safely manage feeding, oil throwing, and extreme refining applications.

How do refining components maximize refinery safety?

Learn how refining valves enhance oil refinery operations safely to minimize hazardous downtime and ensure long-term plant efficiency.

Why partner with an experienced ball valve manufacturer?

A certified ball valve manufacturer provides custom alloy selections, severe-service engineering, and rigorous pressure testing compliant with API 6D standards.

What body materials are available for this series?

We offer chrome-moly steels like WC9, and specialized heat-resistant alloys to prevent high-temperature erosion and corrosion.

Are your delayed coking valves fire-safe?

Absolutely. Our designs are strictly tested and certified to API 607 and API 6FA standards, ensuring critical sealing integrity during fire emergencies.

What flange configurations do you provide?

Our valves feature flanged ends matching ASME B16.5 and ASME B16.47 specifications, ensuring flawless integration into heavy-duty industrial piping networks.