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Single Stage Type Pumps

Type Inlet & Outlet Port Motor power (@ 50Hz) Pump rotation speed [rpm @ 50Hz] Nominal capacity [m3/saat] Maximum capacity [m3/h] Vacuum pressure at sea level Absolute pressure Service water [l/min] Water inlet PDF File
[kW] 50Hz 60Hz mm Hg mbar
PVT 200/160 DN 50 5,5 1450 170 290 -680 100 30 ½"

PVT 200/200 DN 50 7,5 1450 270 400 -680 100 35 ½"

PVT 230/240 DN 50 11 1450 430 560 -700 80 45 ¾"

PVT 230/300 DN 65 15 1450 470 600 -700 80 50 ¾"

PVT 275/220 DN 80 15 1450 500 650 -730 40 50 1"

PVT 275/260 DN 80 18,5 1450 600 800 -730 40 55 1"

PVT 275/300 DN 80 22 1450 700 850 -730 40 60 1"

PVT 275/400 DN 100 30 1450 1200 1450 -710 60 110 1"

PVT 275/500 DN 100 37 1450 1300 1600 -710 60 120 1"

PVT 420/350 DN 125 37 980 1500 2000 -730 40 90 1½"

PVT 420/400 DN 125 45 980 1800 2250 -730 40 100 1½"

PVT 520/350 DN 200 55 735 2100 2650 -600 . -680 200 - 100 200 2"

PVT 520 450 DN 200 75 735 2700 3400 -600 . -680 200 - 100 220 2"

PVT 520/700 DN 200 90 735 3800 4400 -600 . -680 200 - 100 250 2"

PVT 520/800 DN 200 110 880 4550 4800 -600 . -680 200 - 100 280 2"

PVT 520/850 DN 200 132 950 4900 5400 -600 . -680 200 - 100 290 2"

PVT 650/500 DN 300 132 490 5200 5750 -600 . -680 200 - 100 300 3"

PVT 650/600 DN 300 160 590 6000 6600 -600 . -680 200 - 100 330 3"

PVT 650/700 DN 300 160 670 7000 7500 -600 . -680 200 - 100 350 3"

PVT 700/400 DN 300 200 390 8000 9600 -600 . -680 200 - 100 400 3"

PVT 700/500 DN 300 250 490 10000 12000 -600 . -680 200 - 100 450 3"

PVT 700/600 DN 300 315 590 11700 14050 -600 . -680 200 - 100 500 3"

PVT 700/700 DN 300 355 670 12500 15000 -600 . -680 200 - 100 550 3"

PVT 800/400 DN 350 315 400 13500 16200 -600 200 700 4"

PVT 800/500 DN 350 355 485 16500 19800 -600 200 750 4"

PVT 800/600 DN 350 400 590 20000 24000 -600 200 900 4"

Single-Stage Liquid Ring Vacuum Pumps: Technical Explanation

Introduction
Single-stage liquid ring vacuum pumps are one of the vacuum pumps widely used in industrial applications. These pumps stand out with their efficient operating performance, low maintenance requirements, and durability in systems requiring gas transfer. This article will discuss the working principle, structural features, advantages, and areas of use of single-stage liquid ring vacuum pumps.

  1. Working Principle of Single-Stage Liquid Ring Vacuum Pumps
    Single stage stainless steel vacuum pump with liquid ring

    Single stage water circulation vacuum pump


    Single-stage liquid ring vacuum pumps operate based on the principle of compressing and discharging gas with the help of a rotor located in the center and a liquid ring formed around this rotor.

Water-ring single-stage vacuum pump

  • Water or a suitable liquid is filled into the pump.
  • As the rotor rotates, the centrifugal force pushes the liquid toward the inner walls of the pump casing, forming a ring.
  • Due to the eccentric placement of the rotor, the volumes between the rotor blades change, causing gas to be drawn in, compressed, and discharged.

In this way, single-stage liquid ring vacuum pumps create an effective vacuum in industrial vacuum applications.

  1. Structural Features
    The main structural components of single-stage liquid ring vacuum pumps are as follows:

    Water type single stage vacuum pump

    Single Stage Liquid Ring Vacuum Pump

  • Rotor: Located at the center of the pump and is the moving part.
  • Pump Casing: The outer structure that forms the liquid ring.
  • Suction and Discharge Ports: Allow gas to enter and be discharged.
  • Liquid Inlet Point: Ensures the replenishment of the liquid inside the pump.

Single-Stage Liquid Ring Vacuum Pump

Advantages
The advantages offered by single-stage liquid ring vacuum pumps are as follows:

  • Low Maintenance Requirement: Requires less maintenance compared to oil-based systems.
  • Quiet and Vibration-Free Operation: Operates at a low noise level without causing disturbance.
  • Applicability for Different Gases: Can also absorb moist and dirty gases.
  • Long Lifespan: Resistant to wear.
  1. Areas of Use
    Single-stage liquid ring vacuum pumps have a wide range of industrial applications:
  • Chemical Industry: Used in gas recovery, solvent recycling, and vapor removal processes.
  • Food Industry: Effective in vacuum packaging, frozen food production, and liquid food processing applications.
  • Textile Industry: Preferred in drying and dehumidification processes.
  • Energy Sector: Used in turbine condensation systems and gas removal processes.
  • Paper and Pulp Industry: Plays an important role in vacuum paper drying and water removal processes.
  • Healthcare and Pharmaceutical Industry: Used in applications such as drug production, sterilization, and vacuum distillation.
    Türkiye's Flagship Vacuum Pump

    Türkiye’s Flagship Vacuum Pump

Conclusion
Single-stage liquid ring vacuum pumps are preferred in various industrial applications due to their effective vacuum capacity and low maintenance requirement. Thanks to their high durability and ability to work with various gas types, they can be used in many sectors such as chemical, food, textile, energy, paper, and healthcare. Therefore, selecting a suitable model according to the required vacuum level and process requirements is important.