High Quality EX Motor Cryogenic Centrifugal Pump

Our Explosion-Proof Motor Cryogenic Centrifugal Pump is a high-performance, safety-focused fluid transfer solution specifically engineered for extreme low-temperature environments and explosive atmospheres. Designed in strict compliance with international standards such as ISO ,ATEX, this pump integrates advanced explosion-proof technology with cryogenic-resistant structural design, ensuring reliable, efficient, and safe operation in the most demanding industrial scenarios worldwide. It is widely applicable to the transfer of cryogenic liquids such as liquefied natural gas (LNG), liquid nitrogen (LN2), liquid oxygen (LO2), liquid argon (LAr), and liquid hydrogen (LH2), serving industries including petrochemicals, air separation, LNG terminals, hydrogen energy storage and transportation, and industrial gas processing.

Core Features & Technical Advantages

1. Explosion-Proof Safety Assurance

All electrical components are equipped with explosion-proof configurations, fully meeting ATEX, IECEx, and relevant regional explosion-proof standards to eliminate potential ignition sources in explosive atmospheres. The hermetically sealed motor design prevents the ingress of cryogenic vapors and flammable gases, while the motor housing is made of high-strength alloy materials with excellent pressure resistance and flame-retardant performance. This ensures the pump operates safely even in harsh environments where flammable and explosive cryogenic media are present, effectively avoiding safety accidents such as leaks and explosions.

2. Superior Cryogenic Resistance

The pump is specially designed to adapt to extreme low-temperature working conditions, with a stable operating temperature range of -196℃ to -50℃, capable of handling various ultra-low-temperature cryogenic liquids without performance degradation. Key components such as the pump body, impeller, and shaft are made of high-quality cryogenic-resistant materials: austenitic stainless steel (304L/316L) for the pump body and impeller, ensuring no brittle fracture at ultra-low temperatures; martensitic age steel (17-4PH) for the shaft,经过 deep cooling treatment to enhance low-temperature toughness and strength, avoiding deformation and breakage under cryogenic conditions. The entire pump head is wrapped in a high-vacuum jacket to minimize cold loss, ensuring stable operation of the pump in long-term low-temperature environments.

3. High Efficiency & Stable Operation

Adopting an advanced impeller design with low dynamic asymmetry, the pump achieves high flow rates and head while reducing energy consumption by 10-20% compared to traditional cryogenic pumps. The optimized hydraulic structure minimizes outlet pressure pulsation, ensuring stable motor load and smooth operation with low noise and vibration. The transmission case is equipped with an automatic lubrication system, combined with oil temperature interlock, transmission case temperature monitoring, and interlock control, further ensuring the stable and reliable operation of the unit. Optional frequency conversion motor configuration expands the flow and head range of the pump, making it suitable for different working condition requirements.

4. Reliable Sealing & Zero Leakage

The pump adopts a three-level sealing scheme of "main seal + auxiliary seal + leakage collection" to ensure tightness and prevent cryogenic medium leakage. The mechanical seal uses special low-temperature-resistant materials, with a service life of up to 4000 hours, and is equipped with titanium alloy or hard alloy sealing surfaces to resist wear, low temperature, and corrosion. For scenarios requiring higher sealing performance, a double-end dry gas seal can be configured, which is especially suitable for the transfer of flammable and explosive cryogenic media such as LNG and LO2. The vertical submerged design (optional) allows the pump to be completely immersed in the cryogenic liquid, realizing zero liquid leakage and further reducing cold loss.

Application Scenarios

1.LNG Industry: LNG terminals, LNG gasification stations, LNG refueling stations, and LNG transportation and transfer systems

2.Air Separation Industry: Transfer of liquid nitrogen, liquid oxygen, and liquid argon in air separation plants

3.Petrochemical Industry: Handling of cryogenic media in petrochemical processing, low-temperature reaction systems, and cryogenic storage

4.Hydrogen Energy Industry: Transfer of liquid hydrogen in hydrogenation stations, hydrogen storage and transportation systems

5.Other Industries: Industrial gas processing, low-temperature laboratory equipment, and cryogenic refrigeration systems

Quality & After-Sales Commitment

We adhere to strict quality control standards throughout the production process, with 100% inspection of finished products to ensure each pump meets international technical requirements and safety standards. All products are provided with a 1-year warranty period, and we offer 24/7 online and video technical support to solve installation, operation, and maintenance problems for customers in a timely manner. We also provide customized solutions according to customer-specific working conditions, including customized flow, head, material, and explosion-proof level, to meet the diverse needs of different industries and regions.

Whether you need a reliable cryogenic fluid transfer solution for explosive environments or a customized pump for special low-temperature working conditions, our Explosion-Proof Motor Cryogenic Centrifugal Pump is your ideal choice.