Refrigeration Compressors
Marine Cooling & Refrigeration Excellence.
Our Advantage
- Reconditioned & reusable units
- World's leading manufacturers
- Ready-to-ship stock
- Strict validation process
- Mission-critical cooling
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We provide a comprehensive inventory of Reconditioned and Reusable Refrigeration Compressors specifically engineered for the demanding environments of the marine and offshore industries.
We understand that maintaining the cold chain and crew comfort is critical, which is why we specialize in high-availability, mission-critical cooling solutions.
Unmatched Inventory of Global Brands
We maintain a ready-to-ship stock of compressors from the world's leading manufacturers, ensuring compatibility with your existing onboard systems:
Carrier & Sabroe
Industry leaders in container and bulk cooling
Daikin & Mitsubishi
Precision-engineered Japanese technology
Bitzer & Bock
Robust German engineering for reliable refrigeration
York & Mycom
Specialized solutions for industrial-scale marine HVAC
Copeland
Reliable reciprocating and scroll technology
Quality Assurance & Technical Integrity
Reliability is our baseline. Every refrigeration compressor in our facility undergoes a strict validation process before it is cleared for dispatch:
Rigorous Quality Testing
Performance trials under simulated load conditions
NDT Inspection
Comprehensive Non-Destructive Testing (NDT) to ensure structural and casting integrity
Certification
We provide internal test certificates for all units
Class Inspection
Upon request, we can coordinate inspections by IACS member classification societies (such as DNV, ABS, LR, or BV) to provide third-party verification of quality
Why Choose Our Reconditioned Compressors?
Performance, sustainability, and support you can count on
Immediate Availability
Skip the long lead times of new factory orders with our "Ready Stock"
Sustainability
Reconditioned units offer a circular economy solution, reducing environmental impact without sacrificing performance
Technical Support
Our team ensures you receive the correct model and providing the necessary spares for seamless integration
Technical Insights: Marine Refrigeration Compressors
Expert engineering observations from our dismantling facility.
What Is It?
A marine refrigeration compressor is the heart of the vessel's vapor-compression cooling cycle. It functions by drawing in low-pressure, low-temperature refrigerant gas from the evaporator and compressing it into a high-pressure, high-temperature gas, forcing it into the condenser. Depending on the cooling load, ships utilize various designs: open-type reciprocating compressors (often belt-driven), semi-hermetic reciprocating units, and large screw compressors. We stock leading brands like Carrier (Carlyle), Sabroe, Daikin, and Bitzer.
Applications
Refrigeration compressors serve two primary functions onboard. First, they power the Domestic Provision Plants, maintaining precise temperatures in the ship's meat, fish, and vegetable rooms to sustain the crew during long voyages. Second, they drive the central Air Conditioning (AC) chillers, providing climate control for the accommodation block and cooling critical electronic equipment in the bridge and engine control room. Specialized reefer vessels and fishing trawlers utilize massive screw compressors for cargo cooling and blast freezing.
Common Failure Modes
Liquid slugging is a catastrophic failure mode where unevaporated liquid refrigerant enters the compressor suction, resulting in shattered valve plates and bent connecting rods, as liquids cannot be compressed. Loss of lubrication—often caused by refrigerant migration into the crankcase oil during standby—leads to rapid main bearing failure and crankshaft scoring. In semi-hermetic compressors, stator motor winding burnouts occur due to sustained electrical overloads or acidic contamination of the refrigerant circuit.
Inspection Process
Our reconditioning process involves stripping the compressor to the bare block. We gauge the cylinder bores and crankshaft journals to ensure they are within OEM tolerances. The valve plates (suction and discharge reeds) are meticulously inspected for fatigue and replaced if necessary. The oil pump is tested for adequate pressure. For semi-hermetic units, the electric motor stator is megger-tested to verify insulation resistance. Once assembled, the unit undergoes a rigorous dry-nitrogen pressure test and vacuum dehydration to ensure it is completely moisture-free.
Buyer Considerations
When ordering a replacement compressor, verify the exact Model Number and Serial Number from the nameplate. Crucially, inform the supplier of the specific refrigerant type used onboard (e.g., R-134a, R-404A, R-407C), as this dictates the type of compressor oil (Mineral, Alkylbenzene, or POE) that must be charged in the crankcase to prevent chemical incompatibility. If purchasing a semi-hermetic compressor, confirm the voltage and frequency (e.g., 440V/60Hz) to ensure motor compatibility.
Refrigeration Compressors — Common Questions
Answers to specific questions our clients ask about sourcing marine refrigeration and AC equipment.
Which refrigeration compressor brands do you supply for marine reefer systems?
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We supply major marine refrigeration compressor brands including Carrier (Carlyle), Daikin, Sabroe, Bitzer, Bock, and York. Our stock covers open-type, semi-hermetic, and reciprocating compressors for both provision plants and AC systems.
Can refrigeration compressors from Alang be recertified for R-404A or R-134a refrigerant?
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Yes. When overhauling used compressors, we can configure them for modern, environmentally compliant refrigerants like R-404A or R-134a by flushing the system, replacing the oil with compatible POE (polyolester) oil, and changing the relevant O-rings and expansion valves.
What testing is done on a reconditioned marine refrigeration compressor before dispatch?
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Every reconditioned compressor undergoes a stringent pressure leak test with dry nitrogen, followed by a vacuum dehydration process. We also check the motor windings (for semi-hermetic units) using a megger test and perform a test run to ensure proper oil pressure and pumping efficiency.
Request a Quote
Contact us with your refrigeration compressor requirements today. Our team will provide you with detailed information, pricing, and availability for certified reconditioned refrigeration compressors from world-leading manufacturers.