Sign In


Forgot Password?

Forgot Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.


Have an account? Sign In Now

Sorry, you do not have permission to ask a question, You must login to ask a question. Please subscribe to paid membership


Forgot Password?

Please subscribe to paid membership

Please briefly explain why you feel this question should be reported.

Please briefly explain why you feel this answer should be reported.

Please briefly explain why you feel this user should be reported.

Sign InSign Up

Vacuum Furnace End-User Q&A Community

Vacuum Furnace End-User Q&A Community Logo Vacuum Furnace End-User Q&A Community Logo

Vacuum Furnace End-User Q&A Community Navigation

  • Home
  • About Us!
  • FAQ Blog
  • Resources
    • Free to Join
    • Answer it Forward
    • What is an FAQ Blog Post?
  • Contact Us
Search
Ask A Question

Mobile menu

Close
Ask a Question
  • Home
  • Categories
  • Questions
    • New Questions
    • Trending Questions
  • FAQ Blog
  • Groups
  • Tags
  • Points Rewards
  • Users
  • Help
  • Home
  • About Us!
  • FAQ Blog
  • Resources
    • Free to Join
    • Answer it Forward
    • What is an FAQ Blog Post?
  • Contact Us

Ask | Share | Growβ„’ - Question & Answer Community

Of the Members, By the Members, For the Members!
VacuumFurnaces.com is a Q&A community where vacuum furnace product and service suppliers connect with commercial and captive heat treaters to share their practical skills and know-how and to establish valuable relationships around niche topics of expertise with vacuum furnace end-users in operations, production, training, maintenance, marketing, sales, and engineering.

Login
Home/ Questions/Q 545
Next
In Process

Answer it Forward Challenge
  • 0
Answer it Forward Challenge
Asked: July 24, 20202020-07-24T14:30:08+00:00 2020-07-24T14:30:08+00:00In: Diffusion Pumps

How can oil be lost from a diffusion pump?

  • 0
How can oil be lost from a diffusion pump?
loss of oil
  • 1 1 Answer
  • 94 Views
  • 0 Followers
  • 0
Share
  • Facebook

    You must login to add an answer.


    Forgot Password?

    1 Answer

    • Voted
    • Oldest
    • Recent
    1. VacuumFurnaces.com Answers
      2024-01-18T00:35:23+00:00Added an answer on January 18, 2024 at 12:35 am
      This answer was edited.

      In a vacuum system, a diffusion pump is a type of pump used to create and maintain a high vacuum environment. It operates based on the principle of vapor jet pumping.

      To minimize oil loss from a diffusion pump, it’s important to operate the pump within its specified parameters, maintain the system properly, and address any leaks promptly. Regular maintenance and inspection are essential, this includes checking and replacing worn seals, cleaning the pump regularly, and ensuring proper operating conditions. Additionally, using the correct type of high-quality oil for the specific application and regularly checking and replacing the oil as needed can help extend the life of the diffusion pump.

      It’s important to note that the specific factors affecting oil loss from a diffusion pump can vary depending on the design and operating conditions of the pump. Therefore, it is recommended to consult the manufacturer’s guidelines and specifications for the particular diffusion pump.

      Oil can be lost from a diffusion pump through various mechanisms, including:

      Vaporization: Diffusion pumps operate by creating a high vacuum through the diffusion of vapor molecules. The oil in the pump is heated to a high temperature, causing it to vaporize and create a vapor stream. This jet then entrains and transports gas molecules from the vacuum chamber, helping to reduce the pressure. However, some of the oil molecules can escape from the pump as vapor, leading to oil loss of oil over time.

      Backstreaming: Backstreaming occurs when oil vapor from the diffusion pump flows back into the vacuum chamber or system being evacuated. This can happen if the pressure in the vacuum chamber is higher than the pressure in the diffusion pump, causing the oil vapor to flow in the reverse direction. Backstreaming can result in oil contamination of the vacuum system and loss of oil from the diffusion pump.

      Chemical Reactions: Some chemical reactions can take place between the oil and other substances in the system, leading to the formation of by-products that may escape from the pump. This can contribute to the loss of oil over time.

      Leakage: Mechanical leaks in the pump or the vacuum system can allow oil to escape. The pump consists of various seals and gaskets that prevent oil from escaping. However, over time, these seals can degrade or develop leaks, allowing oil to escape from the pump. Regular maintenance and inspection are essential to identify and address any leaks promptly.

      Maintenance and operation errors: Improper maintenance or operation of the diffusion pump can also lead to oil loss. For example, if the pump is not properly cleaned or maintained, oil residues can accumulate and be lost during operation. Similarly, if the pump is operated at excessively high temperatures or pressures, it can cause accelerated oil vaporization and loss.

      • 0
      • Share
        Share
        • Share onFacebook
        • Share on Twitter
        • Share on LinkedIn
        • Share on WhatsApp

    Sidebar

    Stat

    • Questions 1k
    • Answers 210
    • Best Answers 0
    • Users 73

    Related Questions

    • Why diffusion pump doesn't work properly?

      • 1 Answer
    • How to check heater power input in diffusion pump?

      • 0 Answers
    • How to check heater power input in diffusion pump?

      • 0 Answers
    • How often does one need to change the oil in ...

      • 0 Answers
    • How does a diffusion pump work?

      • 1 Answer

    Top Members

    Greg Kimble

    Greg Kimble

    • 281 Points
    AlessiaP

    AlessiaP

    • 103 Points
    Thomas

    Thomas

    • 73 Points
    patrickduis

    patrickduis

    • 60 Points
    rcauthon

    rcauthon

    • 58 Points
    Show More

    Questions Categories

    Vacuum Pumps
    119Questions
    , 3Followers
    Thermocouples
    73Questions
    , 7Followers
    Diffusion Pumps
    70Questions
    , 4Followers
    Vacuum Technology
    64Questions
    , 4Followers
    Leak Checking, Testing & Detection
    55Questions
    , 6Followers
    Gauges - Vacuum
    46Questions
    , 3Followers
    Vacuum Pressure
    40Questions
    , 2Followers
    Vacuum Furnaces
    36Questions
    , 4Followers
    Standards, Certifications & Accreditations
    32Questions
    , 1Follower
    Hot Zone - Heating Elements
    30Questions
    , 4Followers
    Quench Cooling System
    29Questions
    , 0Followers
    Water Cooling Systems
    25Questions
    , 1Follower
    Process Control System
    24Questions
    , 2Followers
    Vacuum Seals & O-Rings
    24Questions
    , 1Follower
    Instruments - Vacuum
    19Questions
    , 0Followers
    Vacuum Processing
    17Questions
    , 0Followers
    Instruments - Leak Testers
    17Questions
    , 0Followers
    Vacuum Brazing
    17Questions
    , 4Followers
    Temperature Uniformity Survey (TUS)
    15Questions
    , 3Followers
    Instruments - Measurement
    14Questions
    , 1Follower
    Heat Exchanger
    13Questions
    , 0Followers
    Partial Pressure
    12Questions
    , 1Follower
    Backstreaming
    12Questions
    , 1Follower
    System Accuracy Test (SAT)
    11Questions
    , 2Followers
    Baskets, Fixtures & Racks
    10Questions
    , 1Follower
    Sensors - Pressure
    10Questions
    , 0Followers
    Hot Zone - Refractory
    9Questions
    , 0Followers
    Control System - Temperature
    9Questions
    , 1Follower
    Backfilling
    9Questions
    , 1Follower
    Components, Supplies & Materials
    8Questions
    , 0Followers
    Instrumentation & Testing
    8Questions
    , 0Followers
    Hot Zone - Insulation, Heat Shield
    8Questions
    , 0Followers
    Outgassing
    8Questions
    , 1Follower
    Heating Chamber - Hot Zone
    8Questions
    , 0Followers
    Getter Materials
    8Questions
    , 0Followers
    Vacuum Pumping System
    8Questions
    , 0Followers
    Cold Traps
    7Questions
    , 0Followers
    Roughing Pumps
    6Questions
    , 0Followers
    Power Supply
    6Questions
    , 0Followers
    Control System - Programming
    6Questions
    , 1Follower
    Bakeout
    6Questions
    , 0Followers
    Gauges - Pressure
    6Questions
    , 0Followers
    Horizontal Vacuum Furnaces - Batch
    5Questions
    , 1Follower
    Instruments - Calibration
    5Questions
    , 0Followers
    Tubes, Pipes & Fittings
    5Questions
    , 0Followers
    Residual Gas Analyzer (RGA)
    5Questions
    , 0Followers
    Carburizing
    5Questions
    , 0Followers
    Vertical Vacuum Furnaces - Batch
    4Questions
    , 0Followers
    Cryogenic Pumps
    4Questions
    , 0Followers
    Instruments - Detection
    4Questions
    , 0Followers
    Metallurgy
    4Questions
    , 1Follower
    Instruments - Pressure
    4Questions
    , 0Followers
    Instruments - Analyzers
    4Questions
    , 0Followers
    Hot Zone - Fixtures & Supports
    4Questions
    , 0Followers
    Pressure Vessel (Shell-Tank)
    3Questions
    , 0Followers
    Quenchants - Gases
    3Questions
    , 0Followers
    Control System - Vacuum
    3Questions
    , 0Followers
    Recorders
    3Questions
    , 1Follower
    Data Acquisition
    3Questions
    , 0Followers
    Valves
    3Questions
    , 0Followers
    Instruments - Monitoring
    3Questions
    , 0Followers
    Instruments - Temperature
    3Questions
    , 1Follower
    Gas Quench Systems
    3Questions
    , 0Followers
    Oil Quench Vacuum Furnaces
    2Questions
    , 0Followers
    Hearth Assembly & Rails
    2Questions
    , 0Followers
    Holding Pumps
    2Questions
    , 1Follower
    Gas Supply System
    2Questions
    , 0Followers
    Gas Generators
    2Questions
    , 0Followers
    Controllers
    2Questions
    , 1Follower
    Controller Software
    2Questions
    , 0Followers
    Manifolds
    2Questions
    , 0Followers
    Parts Cleaning Equipment
    2Questions
    , 0Followers
    Electrical
    2Questions
    , 1Follower
    Pyrometry
    2Questions
    , 2Followers
    Flanges
    2Questions
    , 0Followers
    Gauges - Mechanical
    2Questions
    , 0Followers
    Vacuum Measurement
    2Questions
    , 0Followers
    Integral Quench Vacuum Furnaces
    1Question
    , 0Followers
    Booster Pumps
    1Question
    , 0Followers
    Quench Nozzles
    1Question
    , 0Followers
    Gas Storage Tanks & Vessels
    1Question
    , 0Followers
    Loaders & Tracks
    1Question
    , 0Followers
    Flowmeters
    1Question
    , 0Followers
    Data Loggers
    1Question
    , 0Followers
    Nitriding
    1Question
    , 0Followers
    Health & Safety Protection
    1Question
    , 1Follower
    Control System – Recording
    1Question
    , 1Follower
    Control System – Testing
    1Question
    , 0Followers
    Backfill Gases
    1Question
    , 0Followers
    Vacuum Pump Maintenance
    1Question
    , 0Followers
    Vacuum Pump Performance Checks
    1Question
    , 0Followers
    Semi & Continuous Vacuum Furnaces
    0Questions
    , 0Followers
    Other Vacuum Furnaces
    0Questions
    , 0Followers
    Elevator System
    0Questions
    , 0Followers
    Hydraulic Power Units
    0Questions
    , 1Follower
    Tank Base Assembly
    0Questions
    , 0Followers
    Pump Chillers
    0Questions
    , 0Followers
    Quench Blower Assembly
    0Questions
    , 0Followers
    Baffles
    0Questions
    , 0Followers
    Water Tank Assembly
    0Questions
    , 0Followers
    Cooling Towers
    0Questions
    , 0Followers
    Parts Handling Equipment
    0Questions
    , 0Followers
    Electric Motors
    0Questions
    , 0Followers
    Actuators
    0Questions
    , 0Followers
    Other Sub-Systems
    0Questions
    , 0Followers
    Hydraulics
    0Questions
    , 0Followers
    Mechanical
    0Questions
    , 0Followers
    Pneumatics
    0Questions
    , 0Followers
    Solenoids
    0Questions
    , 0Followers
    Vacuum Meters
    0Questions
    , 0Followers
    Vacuum Furnace Maintenance
    0Questions
    , 1Follower
    Other
    0Questions
    , 0Followers
    Control System
    0Questions
    , 1Follower
    Instruments - Sensors
    0Questions
    , 0Followers
    Vacuum Valves
    0Questions
    , 0Followers
    Feedthrus
    0Questions
    , 0Followers
    Pressure Relief Valves
    0Questions
    , 0Followers
    Control System – Calibration
    0Questions
    , 0Followers
    Gas Surge Tanks
    0Questions
    , 0Followers
    Work Preparation & Handling
    0Questions
    , 1Follower
    Fixturing Techniques
    0Questions
    , 0Followers
    Heating Chamber – Hot Zone Construction
    0Questions
    , 0Followers
    Vacuum Measurement Systems
    0Questions
    , 0Followers
    Sensors – Vapor Pressure
    0Questions
    , 0Followers
    Mean Free Path
    0Questions
    , 0Followers
    Leak Repair
    0Questions
    , 0Followers
    Eutectic Melting
    0Questions
    , 1Follower
    Cycle Recipe Design
    0Questions
    , 0Followers
    Preheating, Soaking & Ramp Rates
    0Questions
    , 0Followers
    Heat Exchanger Maintenance
    0Questions
    , 0Followers
    Maintenance Procedures
    0Questions
    , 0Followers
    Vacuum Seals & O-rings Maintenance
    0Questions
    , 0Followers
    Cleaning of Parts
    0Questions
    , 0Followers
    Cleaning of Fixtures
    0Questions
    , 0Followers
    Vacuum Furnace Systems & Design
    0Questions
    , 0Followers
    Heat Exchanger Design
    0Questions
    , 0Followers
    Basket, Fixture & Rack Design
    0Questions
    , 0Followers
    Vacuum Furnace Construction
    0Questions
    , 0Followers
    Hot Zone & Refractory Designs (Carbon & Metal)
    0Questions
    , 0Followers
    Gas Quench System Design
    0Questions
    , 0Followers
    Water Cooling System Design
    0Questions
    , 0Followers
    Pumping System Design
    0Questions
    , 0Followers
    Gas Nozzles & Hearth Design
    0Questions
    , 0Followers
    Vacuum Furnace Installation & Commissioning
    0Questions
    , 0Followers
    Vacuum Furnace Decommissioning
    0Questions
    , 0Followers
    Plant Safety & Best Practices
    0Questions
    , 0Followers
    Vacuum Heat Treat Applications
    0Questions
    , 0Followers

    Explore

    • Home
    • Categories
    • Questions
      • New Questions
      • Trending Questions
    • FAQ Blog
    • Groups
    • Tags
    • Points Rewards
    • Users
    • Help

    Footer

    VacuumFurnaces.com

    A mobile and online question-and-answer directory for vacuum furnace end-users, commercial and in-house vacuum heat treaters, and equipment, product, and service suppliers. Our knowledge networking platform allows for professional connections on the basis of asking questions, finding answers, and sharing common goals and pursuits in the best interests of all our members.

    About Us

    • About Us!
    • FAQ Blog
    • Resources
      • Free to Join
      • Answer it Forward
      • What is an FAQ Blog Post?
    • Contact Us
    • Sitemap

    Legal Stuff

    • Terms & Conditions
    • Privacy Policy

    Help

    • Membership Benefits
    • Support

    Follow

    © 2023 Discy. All Rights Reserved

    We use cookies to ensure that we give you the best experience on our website. If you continue to use this site we will assume that you are happy with it.Ok