{"id":1587298,"date":"2024-02-13T13:20:37","date_gmt":"2024-02-13T11:20:37","guid":{"rendered":"https:\/\/artem.steiner.com.ua\/?p=1587298"},"modified":"2025-07-01T12:51:27","modified_gmt":"2025-07-01T09:51:27","slug":"plunzherni-nasosy-prynczyp-roboty-sfery-zastosuvannya-ta-klyuchovi-kryteriyi-vyboru","status":"publish","type":"post","link":"https:\/\/steiner.com.ua\/en\/plunzherni-nasosy-prynczyp-roboty-sfery-zastosuvannya-ta-klyuchovi-kryteriyi-vyboru\/","title":{"rendered":"Plunger pumps: how they work, applications and key selection criteria"},"content":{"rendered":"

The plunger pump works on the principle of creating pressure in the chamber due to the translational movement of the plunger (piston). Main stages of operation:<\/p>

  1. Reverse plunger stroke:<\/strong>
    As the plunger reciprocates, a vacuum is created in the working chamber, which draws the liquid through the inlet valve.<\/li>\n\n
  2. Straight plunger stroke:<\/strong>
    As the plunger moves forward, the fluid is compressed, creating pressure, and is discharged into the outlet pipe through the outlet valve.<\/li>\n\n
  3. Valve system:<\/strong>
    One-way valves allow fluid to flow in one direction only, preventing reverse flow.<\/li><\/ol>

    Areas of application<\/strong><\/h3>
    1. Chemical industry:<\/strong>
      • Transportation of aggressive substances such as acids, alkalis, solvents.<\/li>\n\n
      • Precise dosing of reagents in chemical processes.<\/li><\/ul><\/li>\n\n
      • Pharmaceutical industry:<\/strong>
        • Highly accurate dosage of active ingredients in the production of medicines.<\/li>\n\n
        • Sterile transport of liquids in laboratory or production environments.<\/li><\/ul><\/li>\n\n
        • Energy:<\/strong>
          • Supply of fuel, lubricants and coolants.<\/li>\n\n
          • Use in high-temperature or high-pressure systems.<\/li><\/ul><\/li>\n\n
          • Oil and gas industry:<\/strong>
            • Pumping heavy oil products and liquids with high viscosity.<\/li>\n\n
            • Introduction of chemical additives in the refining process.<\/li><\/ul><\/li>\n\n
            • Food industry:<\/strong>
              • Precise dosage of syrups, flavours and preservatives.<\/li>\n\n
              • Working with viscous products such as honey or pastes.<\/li><\/ul><\/li><\/ol>

                Features of plunger pumps<\/strong><\/h3>
                1. High pressure:<\/strong>
                  Plunger pumps can deliver pressures of up to 1000 bar, enabling the transport of liquids even in difficult conditions.<\/li>\n\n
                2. Dosing accuracy:<\/strong>
                  They provide precise control of fluid flow, even in small volumes, making them ideal for applications requiring high repeatability.<\/li>\n\n
                3. Resistance to aggressive environments:<\/strong>
                  The use of materials that are resistant to chemical attack (stainless steel, titanium, ceramics) allows us to work with aggressive liquids.<\/li>\n\n
                4. Simplicity of design:<\/strong>
                  The robust and compact design with a minimum of moving parts ensures durability and reduces maintenance costs.<\/li>\n\n
                5. Wide viscosity range:<\/strong>
                  They can transport both watery and highly viscous liquids.<\/li>\n\n
                6. Performance control:<\/strong>
                  You can adjust the fluid flow rate manually or automatically.<\/li><\/ol>

                  How do I choose the right plunger pump?<\/strong><\/h3>
                  1. Fluid characteristics:<\/strong>
                    • Take into account the viscosity, chemical composition and temperature of the liquid.<\/li>\n\n
                    • Check whether the liquid is aggressive or abrasive.<\/li><\/ul><\/li>\n\n
                    • Performance and pressure:<\/strong>
                      • Determine the required volume of fluid to be delivered per unit time.<\/li>\n\n
                      • Make sure that the pump meets the maximum pressure requirements.<\/li><\/ul><\/li>\n\n
                      • Materials of execution:<\/strong>
                        • For aggressive liquids, choose models with a body and plunger made of chemically resistant materials (e.g. PTFE, ceramic).<\/li><\/ul><\/li>\n\n
                        • Operating conditions:<\/strong>
                          • Consider the temperature, humidity and the need to work in explosive atmospheres.<\/li><\/ul><\/li>\n\n
                          • Protection systems:<\/strong>
                            • Make sure that the pump is equipped with a dry-running or overpressure protection system.<\/li><\/ul><\/li>\n\n
                            • Sanitary requirements:<\/strong>
                              • For the food or pharmaceutical industry, check the compliance of the pumps with FDA or EHEDG standards.<\/li><\/ul><\/li><\/ol>