BB4 vs BB5 Pump: How to Choose a Multistage Centrifugal Pump for High-Pressure Service
The main BB4 vs BB5 pump difference is pressure containment: a BB4 is a radially split, segmented multistage pump with one casing, while a BB5 places a multistage inner assembly inside a second barrel-style pressure casing. Neither design is automatically superior. The correct multistage centrifugal pump depends on liquid properties, temperature, pressure, duty profile, containment […]
API 610 BB2 Pump Selection for High-Temperature Petrochemical Service
An API 610 BB2 pump is a strong choice for high-temperature petrochemical service when the duty requires a radially split, between-bearings machine with stable shaft support, controlled thermal growth, and configurable sealing. Selection must still be based on the actual duty point, fluid, suction conditions, materials, and seal arrangement rather than the series limits alone. […]
Priming of Centrifugal Pump: Key Considerations in Integrated Refinery Operations
Fundamentals of Centrifugal Pump Operation Core Principles of Centrifugal Pump Mechanics Centrifugal pump operation starts with the motor. The motor turns the impeller. The impeller pushes the liquid outward. This action turns motor power into fluid movement and pressure. The shape of the impeller and the shape of the casing decide how well this change […]
Centrifugal Pump Priming Methods Compared: Which Works Best for Your System
Fundamentals of Centrifugal Pump Priming The Purpose of Priming in Centrifugal Pumps Priming of centrifugal pump is a preparatory process that ensures the pump casing and suction line are completely filled with liquid before operation. This step is essential because air pockets can prevent proper suction formation, leading to vapor locking or loss of discharge […]
Pump Innovation: Breaking Global Marine Tech Monopolies
Long-standing foreign technologies have controlled the worldwide marine engineering and petrochemical fields, especially in vital liquid handling and pressure control setups. Inside the Yantai National High-tech Industrial Park, Longgang Pump is changing this scene. Founded in 2001, the firm focuses on reliable centrifugal pumps that satisfy the toughest global technical requirements. Through strong emphasis on self-reliant […]
Optimize Efficiency: Axially vs Horizontal Split Pumps
In the worldwide water treatment sector which includes industrial desalination, wastewater handling, and major water distribution the centrifugal water pump acts as the key driver of processes.Numerous plants face ongoing troubles: rising energy expenses from inefficient devices, intense shaking that causes mechanical seal breakdowns, and the tough task of intricate upkeep in pressurized setups. These problems usually arise […]
Great News! The Postdoctoral Innovation Base Project of Longgang has Received Provincial Funding
Recently, the review outcomes for the 2026 Shandong Provincial Postdoctoral Innovation Project were announced. Dr. Pan Jiajing, based at the Postdoctoral Innovation Practice Base of Yantai Longgang Pump Industry Co., Ltd., secured a provincial third-class grant on the strength of his project Multi-Field Coupling Optimization Design of Nuclear-Service Liquid Heavy-Metal Pumps and the Mechanism of […]
The Decision Matrix: Choosing Between a Single Suction and Double Suction Pump for Industrial Fluids
Operational efficiency in petrochemical and refinery environments depends heavily on selecting the correct hydraulic architecture. The financial stakes of this choice are significant, as pump systems often account for a substantial portion of total energy consumption and maintenance expenditures in industrial plants. Understanding the technical nuances within a single-suction and double-suction pump selection process is the first […]
Solving Fluid Challenges: How the Axial Split Double Suction Centrifugal Pump Eliminates Cavitation
Cavitation remains one of the most persistent and destructive challenges in industrial fluid handling, often leading to premature equipment failure, excessive noise, and significant operational downtime. For large-scale industrial processes, selecting the right equipment is critical to maintaining system integrity. The axial split double suction centrifugal pump, specifically the LAD (BB1) series manufactured by Longgang […]
Mastery of the Pump Priming Process for Flawless Refinery Start-ups
The commissioning phase of a refinery represents one of the most critical windows in the lifecycle of petrochemical infrastructure. During this period, the reliability of rotating equipment determines the long-term operational stability and safety of the entire facility. Among the various technical requirements, the pump priming process stands as a fundamental prerequisite for successful machine […]