Liquid Ring Vacuum Pump

parag liquid ring vacuum pump technical details

Parag liquid ring vacuum pumps are known for their robust design and versatility, serving a wide range of industrial applications. Here’s a small description of their technical details:

Working Principle: Parag liquid ring vacuum pumps operate on the principle of a rotating liquid ring that acts as a sealant and a compressor. An eccentrically mounted impeller rotates within a cylindrical casing that is partially filled with a sealing liquid (often water). As the impeller spins, centrifugal force causes the liquid to form a ring against the inner wall of the casing. The spaces between the impeller vanes and the liquid ring create a series of chambers. Due to the eccentric mounting of the impeller, these chambers cyclically expand and contract. Gas is drawn into the expanding chambers through an inlet port, compressed as the chambers contract, and then discharged through an outlet port along with a small amount of the sealing liquid.

Key Technical Features and Specifications (may vary by model):

  • Stages: Available in single-stage and double-stage configurations. Double-stage pumps generally offer deeper vacuum levels and higher efficiency for demanding applications.
  • Materials of Construction (MOC): Commonly offered in materials like Cast Iron (CI), Stainless Steel (SS), and non-ferrous metals to suit different process media and combat corrosion, especially when handling corrosive gases or vapors.
  • Flow Rate: Can vary significantly depending on the model, ranging from tens to thousands of cubic meters per hour (M3/Hr) or liters per minute (LPM).
  • Ultimate Vacuum: Typically specified in mm of Hg (mercury) or mbar (millibar), indicating the lowest pressure the pump can achieve. For example, some models can reach 50 mm of Hg or even deeper vacuums like 710 mm of Hg.
  • Power Source: Primarily electric, usually with three-phase motors. Horsepower (HP) ratings vary from 0.5 HP up to 25 HP or more.
  • Sealing Technology: Often employs mechanical seals for reliable operation and reduced leakage.
  • Design Features:
    • Monoblock/Close-coupled versions: Where the pump and motor are directly coupled, leading to a compact design.
    • SS 316 Teflon Sheet valve technology: Enhances efficiency and durability.
    • Special Designed Impeller: Aimed at achieving low sound pressure levels.
    • Optional Flame-Proof Motors: Available for applications involving flammable gases.
  • Operating Conditions: Can handle both dry and humidified gases. Specific limits for absorbed gas temperature (e.g., 120°C max) and operational liquid temperature (e.g., 80°C max) are typically provided.

Applications:

Parag liquid ring vacuum pumps are highly versatile and widely used across various industries due to their ability to handle moist gases, vapors, and even some soft solids without damage. Common applications include:

  • Chemical & Pharmaceutical: Distillation, filtration, drying, solvent recovery, degassing, sterilization, handling corrosive gases.
  • Plastics: Extruder degassing, vacuum calibration for plastic profiles.
  • Food & Beverage: Vacuum packaging, bottling, degasification of liquids like mineral water, deodorization of oils and fats.
  • General Industrial: Pump priming, laboratory use, milking machines, vacuum metallurgy, vacuum impregnation, condenser exhausting in power plants, wastewater treatment (biogas recovery, aeration, filtration).

Their robust design, continuous performance, and ability to dissipate heat through the sealing liquid make them a reliable choice for demanding industrial environments.

parag liquid ring vacuum pump price list

Parag Engineering, based in Ahmedabad, Gujarat, India, is a well-established manufacturer of industrial vacuum pumps, including liquid ring vacuum pumps (often referred to as water ring vacuum pumps, as water is a common sealing liquid).

Parag Liquid Ring Vacuum Pumps - General Description & Pricing Insights:

  • Product Range: Parag Engineering offers a variety of liquid ring vacuum pumps, including:
    • Mono Block Type Water Ring Vacuum Pumps: These are compact units where the pump and motor are directly coupled. Examples include the SV-20 and SV-30 models.
    • Direct Drive Water Ring Vacuum Pumps: Similar to monoblock, emphasizing the direct coupling.
    • Single Stage and Double Stage configurations: Single-stage pumps achieve a certain vacuum level, while double-stage pumps can reach a higher (deeper) vacuum.
    • Various HP Options: They offer pumps in different horsepower (HP) ratings to suit various flow rate and vacuum requirements, such as 1 HP, 2 HP, 3 HP, 7.5 HP, and potentially higher.
  • Materials of Construction: Parag pumps are available in materials like Cast Iron, Stainless Steel (SS 304, SS 316), and non-ferrous metals, allowing for selection based on the corrosiveness of the gases being handled.
  • Key Features:
    • Designed for handling moist gases, vapors, and even small amounts of liquid in the suction stream.
    • Known for their robust construction, durability, and low maintenance.
    • Often feature unique designs like SS 316 Teflon Sheet valve technology and special impellers for low sound levels.
    • Can be supplied with flame-proof motors as an option.
  • Applications: Their liquid ring vacuum pumps are widely used across diverse industries, including:
    • Chemical & Pharmaceutical: Distillation, filtration, drying, solvent recovery, degassing, sterilization.
    • Plastics: Extruder degassing, vacuum calibration.
    • Food & Beverage: Vacuum packaging, bottling, degasification.
    • General Industrial: Pump priming, laboratory use, milking machines, vacuum metallurgy, vacuum impregnation, and condenser exhausting in power plants.
  • Pricing:
    • Price lists are generally not published online. Due to the customizable nature of industrial pumps (materials, specific configurations, accessories), pricing is typically provided upon inquiry.
    • It’s crucial to contact Parag Engineering directly or their authorized distributors for an accurate and current price list tailored to your specific requirements. They can provide quotes based on your desired model, capacity, materials, and any custom features.