Whether you are looking for methods to select an appropriate marine hydraulic pump or not? As an marine tool for ensuring the stable and efficient operations of ships, choosing the right hydraulic pump needs to think about several factors comprehensively. According to this question, we find some valuable points in order to help you learn about related knowledge better and choose a suitable type for your ships.
Advantages of Marine Hydraulic Pumps

Whether you are looking for methods to select an appropriate marine hydraulic pump or not? As an marine tool for ensuring the stable and efficient operations of ships, choosing the right hydraulic pump needs to think about several factors comprehensively. According to this question, we find some valuable points in order to help you learn about related knowledge better and choose a suitable type for your ships.
Used to be the core component of marine dynamic systems, the design of the marine hydraulic pump system is tailored to the ships’ demands and possesses outstanding performance and integrated functions. The design has significant meaning in promoting marine safety operations. Its prominent properties are as follows:
- High efficiency: The large-flow hydraulic pump can provide stronger power output, which makes the response of the ship’s hydraulic system more rapid and improves the overall working efficiency.
- Reliability: The optimized design and excellent manufacturing technology ensure the long life and stable operation of the large-flow hydraulic pump, and reduce the maintenance frequency and cost.
- Adaptability: The large flow design enables the hydraulic pump to adapt to the hydraulic demand of the ship under different working conditions, and enhances the operational flexibility and environmental adaptability of the ship.
Types of Marine Hydraulic Pumps
As a decisive tool for offshore operation, marine hydraulic pumps have many types. Each type has different structure and characteristics, so their applicable environment is different. These are some common types of introduction:
- Gear pump: Gear pump is a common kind of marine hydraulic pump for sale, and its working principle is that a pair of meshing gears rotate in the pump body to generate pressure. When the gear rotates, the volume of the suction chamber increases, the pressure decreases, and the liquid is sucked into the pump body; With the rotation of the gear, the liquid is brought to the discharge chamber, and the volume of the discharge chamber decreases and the pressure increases, thereby discharging the liquid. Gear pump has the advantages of simple structure, small volume, light weight, and low price, so it is widely used in marine hydraulic systems.
- Vane pump: Vane pump is another common type of hydraulic pump. Its working principle is to suck and discharge liquid through the volume change between rotating blades and stator. When the blades rotate, the volume between the blades gradually increases, forming a low-pressure area and sucking liquid; As the blade continues to rotate, the volume gradually decreases and the pressure increases, thus discharging the liquid. Its advantages are stable operation, low noise, and uniform flow, and it is suitable for ship environments or low-pressure and small-flow hydraulic systems with high requirements for noise and vibration.
- Piston pump: Piston pump is a hydraulic pump that changes the working volume by reciprocating the plunger in the cylinder. When the plunger moves backward, the working volume increases, the pressure decreases and the liquid is sucked; When the plunger moves forward, the working volume decreases, the pressure increases and the liquid is discharged. Piston pump has the advantages of high pressure, high efficiency, and easy variable control, and is often used in situations where high pressure and large flow are needed in a ship hydraulic system.
Selecting A Suitable Marine Hydraulic Pump

A good and efficient marine hydraulic pump is the key to determine whether your ship can run quickly and normally. The following points as key factors can help you consider the types of marine hydraulic pump system:
- Working pressure: We need to know the highest working pressure of ship hydraulic pumps needed by the system, and then try to choose a wonderful pump. By doing researches and calculations to the pressure of every part in the system, we can make sure that operational pressure of the whole system is lower than the fixed pressure of ship hydraulic pumps.
- Flow demand: On the basis of understanding the working pressure of the system, it is also necessary to determine the minimum and maximum flow required by the system, and match the corresponding hydraulic pump according to the different flow demands, so that the selected pump can meet the marine application.
- Input power of the pump: Calculate the input power of the pump and the result must be within the rated power range of the hydraulic pump.
- System result of pump: In order to select a suitable pump, we need to think about the pressure, flow rate, and power needed by a system. Otherwise, we also need to consider the matching of marine hydraulic pumps for sale and other systematic components to guarantee the stability and efficiency of the whole system.
- Corrosion resistance: The marine hydraulic pump should be made of some corrosion-resistant metals, such as stainless steel or coated pump body, which can be exposed to seawater for a long time without serious corrosion.
- Sealing: The selected marine hydraulic pump should have good sealing. Most of them will be made of some special materials, such as fluororubber. This material helps to enhance airtightness and prevent leakage.