The fundamental difference between plunger and piston pumps is the design of their pumping mechanisms. Piston pumps use one or more reciprocating plungers to pressurize and move fluid. The plunger is usually made of ceramic, stainless steel or other material and is moved back and forth by a drive mechanism such as a crankshaft or cam. When the plunger moves forward, it draws fluid through the inlet valve, and when it moves backward, it forces fluid out through the discharge valve. The plunger has a straight cylindrical shape and is sealed to the pump casing by a seal or packing. In contrast, piston pumps use one or more reciprocating pistons to move fluid. Pistons are usually made of stainless steel, cast iron or other materials and are moved back and forth by a drive mechanism such as a crankshaft or connecting rod. As the piston moves forward, it draws fluid through the inlet valve, and as it moves backward, it forces fluid out through the discharge valve. The piston has a flat or slightly round shape and is sealed to the pump casing by piston rings. In general, both plunger and piston pumps are used in high-pressure applications such as water jetting, oil and gas production, and chemical processing. While they share some similarities in operation, differences in their design affect their performance and maintenance requirements. A key difference in their design is how the fluid is sealed within the pump. In a plunger pump, the plunger is sealed to the pump casing by a seal or packing, which wears out over time and needs to be replaced. In contrast, piston pumps use piston rings to seal the fluid within the pump, which are generally more durable and require less maintenance. 90-L-075-MA-1-NN-80-S-4-T2-E-04-GBA-32-32-20 90L075MA1NN80S4T2E04GBA323220 90L075-MA-1-NN-80-S-4-T2-E-04-GBA-32-32-20-F001 90L075MA1NN80S4T2E04GBA323220F001 90-L-075-MA-1-NN-81-R-3-S1-D-03-GBA-32-32-24 90L075MA1NN81R3S1D03GBA323224 90-L-075-MA-1-NN-81-S-3-S1-D-03-GBA-35-35-24 90L075MA1NN81S3S1D03GBA353524 90-L-075-MA-1-NN-81-S-3-T2-E-03-GBA-35-35-20 90L075MA1NN81S3T2E03GBA353520 90L075-MA-2-BB-60-P-3-C7-D-03-GBA-42-42-24 90L075MA2BB60P3C7D03GBA424224 90-L-075-MA-2-BB-60-P-3-C7-D-03-GBA-42-42-24 90L075MA2BB60P3C7D03GBA424224 90L075-MA-2-BC-60-S-3-C7-D-03-GBA-14-32-24 90L075MA2BC60S3C7D03GBA143224 90-L-075-MA-2-BC-60-S-3-C7-D-03-GBA-14-32-24 90L075MA2BC60S3C7D03GBA143224 90-L-075-MA-2-BC-60-S-4-S1-E-05-GBA-26-26-28 90L075MA2BC60S4S1E05GBA262628 Another difference is the shape of the pumping element. The plunger in a plunger pump has a straight cylindrical shape, which provides more surface area and higher flow rates, but is also more difficult to maintain a consistent seal. The piston in a piston pump has a flat or slightly rounded shape, which provides a more consistent seal but may limit the flow rate. Also, plunger pumps are typically used in applications that require higher pressures, while piston pumps are better suited for applications that require higher flow rates at lower pressures. Piston pumps are typically used in high pressure cleaning and water jetting applications, while piston pumps are typically used in fluid transfer and chemical injection applications. In summary, while both piston and piston pumps are used in high pressure applications and share some similarities in operation, there are differences in their design that affect their performance, maintenance requirements, and suitability for different applications. Another major difference between plunger and piston pumps is their ability to handle different types of fluids. Piston pumps are typically used for clean, low viscosity and non-abrasive fluids such as water and oil. This is because the plunger design does not allow solids or debris to pass easily, which could damage the pump. On the other hand, piston pumps are better suited for handling fluids that contain solid, abrasive or viscous materials. The flat or slightly rounded shape of the piston allows more space between the piston and the pump casing, reducing the risk of clogging or damage. Additionally, plunger and piston pumps can differ in overall efficiency and reliability. Piston pumps tend to be more efficient than piston pumps because they require less energy to run and can achieve higher pressures with smaller plunger diameters. However, plunger pumps are more prone to leaks and wear due to their design, which affects their long-term reliability. Piston pumps, on the other hand, have a more robust design and are generally more reliable in the long run, but may require more energy to achieve high pressures or flow rates. In summary, the choice between plunger and plunger pumps will depend on specific application requirements, including the type of fluid being handled, the pressure and flow required, and overall efficiency and reliability requirements. Both types of pumps have advantages and disadvantages, and it is important to carefully consider these factors when selecting the proper pump for a given application. 90-L-075-MA-2-NN-80-S-3-C6-E-02-GBA-42-42-24 90L075MA2NN80S3C6E02GBA424224 90-L-075-MA-2-NN-80-S-3-S1-D-03-GBA-35-35-24 90L075MA2NN80S3S1D03GBA353524 90-L-075-MA-2-NN-80-S-3-S1-E-03-GBA-42-42-24 90L075MA2NN80S3S1E03GBA424224 90L075-MA-5-AB-60-S-3-C6-D-C6-GBA-29-29-24 90L075MA5AB60S3C6DC6GBA292924 90-L-075-MA-5-AB-60-S-3-C6-D-C6-GBA-29-29-24 90L075MA5AB60S3C6DC6GBA292924 90L075-MA-5-AB-60-S-4-S1-D-C6-GBA-42-42-24 90L075MA5AB60S4S1DC6GBA424224 90-L-075-MA-5-AB-60-S-4-S1-D-C6-GBA-42-42-24 90L075MA5AB60S4S1DC6GBA424224 90L075-MA-5-BB-60-R-3-C7-D-C5-FAC-42-42-24 90L075MA5BB60R3C7DC5FAC424224 90-L-075-MA-5-BB-60-R-3-C7-D-C5-FAC-42-42-24 90L075MA5BB60R3C7DC5FAC424224 90-L-075-MA-5-BB-80-P-3-S1-D-C6-GBA-42-42-24 90L075MA5BB80P3S1DC6GBA424224 Another factor to consider when choosing between plunger and piston pumps is their maintenance requirements. Piston pumps require more frequent maintenance than piston pumps because the seals or packing used to seal the plunger to the pump casing can wear out quickly, causing leakage or poor performance. Regular maintenance is required to inspect and replace these seals or packings as needed to ensure proper pump operation. On the other hand, piston pumps are more robust and require less frequent maintenance. The piston rings used to seal the fluid within the pump are generally more durable than the seals or packings used in piston pumps and may last thousands of hours of operation before needing to be replaced. However, regular maintenance is still important to keep your pump running properly, including checking piston rings and other components for wear. Overall, the choice between plunger and piston pumps depends on a number of factors including the type of fluid being handled, the pressure and flow required, and overall efficiency, reliability, and maintenance requirements. Careful consideration of these factors, along with the specific needs and constraints of the application, can help ensure that the most suitable pump is selected for the job.