Containerized ATEX Zone 2 Ex-Proof Diesel Engine Air Compressor with DNV Frame

The Kingway Containerized ATEX Zone 2 Ex-Proof Diesel Engine Air Compressor is a fully integrated compressed air solution engineered for hazardous area operations in the oil and gas industry. Built around the original Sullair DLQ375H rotary screw air end and powered by a reliable Perkins 1106D-E70TA six-cylinder turbocharged diesel engine, this self-contained package delivers a continuous 375 CFM of compressed air at 150 PSI working pressure. Certified to ATEX Directive 2014/34/EU as Group II Category 3G equipment suitable for Zone 2 IIB T3 Gc classified environments, the entire package eliminates the need for on-site assembly and significantly reduces commissioning time on remote drilling sites and offshore production platforms.

The containerized design represents a fundamental shift from traditional skid-mounted compressor configurations. All major components including the compressor, engine, radiator cooling circuit, aftercooler, moisture separator, integrated fuel tank, electrical harness, and digital control panel are permanently installed and pre-commissioned inside a weatherproof 20-foot ISO standard CSC steel container. This full enclosure protects critical rotating equipment and instrumentation from wind-blown sand, salt spray corrosion, torrential rainfall, and extreme ambient temperatures ranging from minus twenty degrees Celsius to plus fifty-five degrees Celsius. Operators in the Middle East deserts and North Sea offshore environments have reported substantially extended service intervals and reduced unplanned maintenance compared to open-frame compressor units exposed to the elements.

This mobile compressor package directly addresses a persistent operational challenge for EPC contractors, drilling service companies, and well testing service providers: the requirement for reliable high-volume compressed air supply that can be rapidly relocated between well pads, drilling locations, or platform decks without specialized heavy-lift equipment or complex rigging. The integrated DNV 2.7-1 certified lifting frame enables straightforward single-point hoisting by platform pedestal crane or offshore supply vessel deck crane. Standard ISO corner castings with twist-lock interfaces allow the container to be stacked, secured, and transported using standard container handling equipment on supply vessels, flat-rack trailers, and multi-modal logistics chains. A unit can be lifted off a supply vessel, placed on the platform deck, connected to fuel and electrical supply, and producing rated compressed air within thirty minutes of arrival.

• ATEX Zone 2 Certified Complete Package: Full compliance with Directive 2014/34/EU, the EN 60079 series of explosive atmosphere standards, and EN 1834 for reciprocating internal combustion engines. The entire integrated system is certified as a single unit, eliminating the compliance complexity and regulatory risk of assembling multiple individually-certified components in the field.
• Containerized Turnkey Compressor Solution: Pre-installed and pre-commissioned compressor, diesel engine, cooling system, fuel circuit, control panel, and electrical wiring harness inside a 20-foot ISO CSC container. Simply connect fuel supply and verify fluid levels to begin compressed air production, drastically reducing mobilization time compared to traditional skid-mounted packages that require field assembly of separate compressor, engine, and cooler modules.
• Original Sullair DLQ375H Rotary Screw Air End: Industry-proven compressor element delivering 375 CFM free air delivery at 150 PSI discharge pressure. The Sullair air end features an asymmetric rotor profile optimized for energy efficiency, with a design service life exceeding twenty thousand operating hours between major overhauls when maintained per the recommended service schedule.
• DNV 2.7-1 Offshore Lifting Frame: Certified lifting frame permanently integrated into the container structure. Four certified pad eyes positioned for a level lift with full fuel and fluid tanks enable safe single-point hoisting, eliminating the need for spreader bars, taglines, or complex multi-point rigging arrangements commonly required for skid-mounted equipment lifts.
• Perkins 1106D-E70TA Diesel Engine: Six-cylinder turbocharged aftercooled industrial diesel engine delivering 205 horsepower at 2200 RPM, compliant with EU Stage IIIA emission standards. Common spare parts inventory with the Perkins-powered generator sets frequently deployed on the same worksite reduces supply chain complexity and inventory carrying costs for multi-asset operators.
• Mobile ISO Container Format: Standard twenty-foot container footprint with certified twist-lock corner castings enables transport on standard flat-rack trailers and platform supply vessels without requiring oversize load permits. Stackable up to three containers high when properly secured, optimizing limited deck space on offshore supply vessels during mobilization campaigns.
• Integrated Heavy-Duty Cooling System: Oversized radiator with thermostatic variable-speed fan control maintains optimal compressor oil and engine coolant temperatures across the full ambient operating range. A dedicated oil cooler circuit ensures lubricant service life is maintained even during sustained high-duty-cycle operation in elevated ambient temperatures exceeding forty-five degrees Celsius.

This containerized air compressor package is engineered for mission-critical compressed air supply in Zone 2 hazardous areas across the upstream oil and gas sector. On offshore production platforms, it provides pneumatic power for valve actuation systems, instrument air supply, and pneumatic tooling during planned maintenance shutdowns and turnaround activities. In onshore drilling operations, it supplies high-volume compressed air for underbalanced drilling programs, foam drilling fluid systems, and well testing procedures across multi-well pad developments where rapid relocation between adjacent locations is a key operational requirement.

The unit is equally suited for gas processing plants where compressed air is required for control systems, pneumatic conveying of bulk materials, and nitrogen generation membrane packages. Pipeline construction and commissioning contractors specify this mobile package for pneumatic pressure testing, intelligent pigging operations, and pipeline drying procedures where the compressed air supply must move progressively along the pipeline route as construction advances. Refinery turnaround and shutdown maintenance crews utilize the high-volume air capability for abrasive blasting, pneumatic torque tool operation, and catalyst handling during planned maintenance windows.

Each containerized compressor package undergoes a comprehensive factory acceptance test including a minimum four-hour full-load run at rated discharge pressure, with continuous monitoring and recording of flow rate stability, oil and coolant temperature trends, vibration signature analysis, and verification of all emergency shutdown and safety interlock functions. The container structure is thoroughly weather-sealed with marine-grade EPDM door gaskets and stainless steel hardware, with all structural steel surfaces receiving a three-layer protective coating system consisting of zinc-rich epoxy primer, high-build epoxy intermediate coat, and UV-resistant polyurethane topcoat in the customer-specified color. Prior to dispatch, all fluid systems are drained and treated with long-term corrosion inhibitor suitable for twelve-month storage under covered conditions. The complete documentation package includes the ATEX Declaration of Conformity, DNV 2.7-1 lifting frame certificate, certified material test reports for pressure-containing components, detailed factory acceptance test report, comprehensive operation and maintenance manuals, and a complete illustrated spare parts catalog with ordering reference numbers. Kingway provides a twelve-month or two-thousand-hour standard warranty from the date of first commissioning, with optional extended warranty coverage, on-site commissioning supervision, and operator competency training available for projects of any scale and location worldwide.