Advanced Mechanical Seal Quiz #1

15 Questions | Total Attempts: 47

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Advanced Mechanical Seal Quiz #1

Advanced Mechanical Seal Topics


Questions and Answers
  • 1. 
      Chesterton's Rotary Equipment Sales Tool can be used to
    • A. 

      Determine the type of pump you are sealing

    • B. 

      Determine the flow produced by a single seal

    • C. 

      Determine the actual PV based on the operating conditions

    • D. 

      Determine the density of the fluid sealed

  • 2. 
    When working to seal a fluid we use environmental controls to make the fluid
    • A. 

      Dirty, hot and sticky

    • B. 

      Clean, cool and lubricious(film forming)

    • C. 

      Dirty, cool and sticky

    • D. 

      Corrosive, abrasive and hot

  • 3. 
    It is impossible to demonstrate the financial value of one environmental control versus another.
    • A. 

      True

    • B. 

      False

  • 4. 
    If a fluid is sticky and a poor seal face lubricant(molten sulfur) we must
    • A. 

      Use a single seal with a soft carbon seal face versus a tungsten carbide seal face

    • B. 

      Use a dual seal or HVS with a clean barrier fluid/Lubricant pressured to 1 bar higher than the sealed pressure

    • C. 

      Use a metal bellows seal with Inconnel 718 metal bellows and plan 11

    • D. 

      Use a stationary split seal with a high pressure holder

  • 5. 
    The best way to determine the best environmental control option is to
    • A. 

      Estimate the costs and match to the process needs

    • B. 

      Select based on the highest sales value

    • C. 

      Specify the Spiraltrac device in every pump

    • D. 

      Specify a flow meter for every pump

  • 6. 
    Liquid lubricated mechanical seals can run at high speed with no seal face lubrication
    • A. 

      True

    • B. 

      False

  • 7. 
    A horizontal split case pump has a suction pressure of 2 bar and a discharge pressure of 10 bar.  What is the seal chamber pressure?
    • A. 

      2 bar

    • B. 

      4 bar

    • C. 

      8 bar

    • D. 

      10 bar

  • 8. 
    What is the main difference between a 442 and 442M Split Seal?
    • A. 

      Split versus Non-Split

    • B. 

      Cast Gland Only

    • C. 

      Rotary versus Stationary Seal

    • D. 

      Rotates Narrow Face to Avoid Wiping, Uses a Machined Gland and Allows Motion

  • 9. 
    What pump manufacturer and models would you use DirectFit Seals?
    • A. 

      Warman AH Series

    • B. 

      Sulzer APP and APT

    • C. 

      Goulds 3196 Series

    • D. 

      Goulds 4400 Series

  • 10. 
    Which mechanical seal model can be used in hot water up to 170 C/350 F with no cooling?
    • A. 

      180

    • B. 

      155

    • C. 

      180H

    • D. 

      150

  • 11. 
    Which seal model below is not used on mixers or reactors normally?
    • A. 

      442M

    • B. 

      280M

    • C. 

      150

    • D. 

      4400H-CW

  • 12. 
    180H hydro pad seals can work very well in a light slurry. 
    • A. 

      True

    • B. 

      False

  • 13. 
    If the 180H is used in a service which starts at 150C, then is cooled to 20 C we would expect
    • A. 

      Smooth service

    • B. 

      Happy customers

    • C. 

      Leakage at the cooler temperature

    • D. 

      High heat generation

  • 14. 
    The only difference between the 186 and the 186 HT is they use different secondary seals
    • A. 

      True

    • B. 

      False

  • 15. 
    A pumping ring seal (180PR/442PR) is typically considered in service above 350 F or 170 C.
    • A. 

      True

    • B. 

      False

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