This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: What must be done to a wafer-lug butterfly valve prior to installation? a. Lubricate the shaft. ... (Read 37 times)

cookcarl

  • Hero Member
  • *****
  • Posts: 539
on: Jul 24, 2018
What must be done to a wafer-lug butterfly valve prior to installation?
 
  a. Lubricate the shaft.
  b. Open the valve.
  c. Close the valve.
  d. Align the flanges.

Question 2

What is the purpose of wearing rings on a centrifugal pump?
 
  a. Prevents fluid leakage
  b. Increases compression ratio
  c. Allows fluid leakage
  d. Prolongs bearing life


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

yifu223

  • Sr. Member
  • ****
  • Posts: 302
Reply #1 on: Jul 24, 2018
Answer to Question 1

b

Answer to Question 2

c


cookcarl

  • Member
  • Posts: 539
Reply 2 on: Jul 24, 2018
Excellent

dyrone

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

Did you know?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Large white butterfly egg Large white butterfly egg
Butterfly Butterfly
Butterfly Butterfly
If the thermostat has a jiggle valve, it should be placed toward the top to allow air to escape. If ... If the thermostat has a jiggle valve, it should be placed toward the top to allow air to escape. If ...
Some plastic intake manifolds are equipped with a pressure relief valve that would open in the ... Some plastic intake manifolds are equipped with a pressure relief valve that would open in the ...
A vacuum-operated EGR valve. The vacuum to the EGR valve is computer controlled by the EGR valve ... A vacuum-operated EGR valve. The vacuum to the EGR valve is computer controlled by the EGR valve ...
Video: Primate Evolutionary Tree Animation

For a complete list of videos, visit our video library