NK, NKV, and NPS type pumps are specialized equipment designed for operation at oil refining, petrochemical, and gas industry enterprises. These units are developed for pumping crude oil, petroleum products, liquefied petroleum gases (LPG), and other liquids with similar physical properties and corrosive behavior. The equipment supplied by SNT Slovakia s.r.o. complies with strict industrial safety standards, ensuring reliable operation under high temperatures and pressures typical of the technological cycles of modern oil refineries.

Design Features and Pump Classification

Each of the presented series has its own design features driven by the specifics of their application in technological processes. SNT Slovakia s.r.o. offers a wide range of modifications, allowing for the selection of the optimal solution for specific operating conditions, whether it is pumping crude oil or supplying light petroleum products to main lines.

NK Type Pumps: These are centrifugal, overhung, single-stage pumps. They feature a simple design and high reliability. Their primary application is pumping petroleum products with temperatures up to 200°C (in standard execution) and higher when cooling systems are utilized.
NKV Type Pumps: These are overhung or double-suction pumps, often featuring a heavy-duty bearing bracket design or a special vertical configuration (depending on the modification). They are designed for more severe operating conditions and provide enhanced rotor stability.
NPS Type Pumps: These are multistage, horizontal, sectional (ring-section) pumps. They are used in applications requiring high head at relatively low flow rates. Thanks to the sectional design, the number of stages can vary to achieve the specified pressure parameters.

Technical Advantages and Operational Reliability

The equipment supplied by SNT Slovakia s.r.o. is engineered for continuous, long-term operation. Special materials and technologies are used in production to prevent premature wear of components caused by chemically active media and high mechanical loads.

Wetted Parts Materials: Depending on the aggressiveness of the pumped medium, carbon steels, chromium steels, or stainless alloys with high corrosion and erosion resistance are utilized.
Shaft Sealing Systems: To prevent leaks of explosive and flammable products, the pumps are equipped with modern mechanical seals (single or double) along with seal support systems according to API plans.
Explosion-Proof Design: All units are equipped with explosion-proof electric motors, which is a mandatory requirement for operation at hazardous production facilities.
Cooling Systems: For handling hot petroleum products, cooling jackets for bearing assemblies and seal chambers are provided, significantly extending the pump’s service life.

Applications of NK, NKV, and NPS Pumps

The versatility and high reliability of these pumps allow them to be integrated into various areas of petrochemical production. Experts from SNT Slovakia s.r.o. assist customers in adapting standard models to meet the unique technological tasks of the enterprise.

Primary and secondary oil refining units (CDU, VDU, catalytic cracking, reforming).
Petroleum product loading and transfer systems at tank farms and terminals.
Fuel supply to combustion systems in process furnaces and boiler houses.
Transportation of liquefied petroleum gases (LPG) to tank farms.
Circulation of heat transfer fluids in process equipment heating loops.