One thing about septic sewage is

Joining of two dissimilar metals is known as __ corrosion.

If a one-flight screw pump is changed to a two-flight screw pump, what percentage of flow increase occurs if everything else is equal?

What compensation will a flexible disk coupling compensate for in angular movement?

Of the following, which could be used as a sacrificial anode in a water tank?

If using a external water source for the pump seal, what should its pressure be in relation to the pressure of the volute?

Viscosity of lubricating oil _ as temperature __ due to the oil becoming thinner.

How is lubricating oil graded?

Grease grade for lubricating is graded by

What may happen when the absolute pressure at the eye of the impeller drops below the vapor pressure of the fluid being pumped causing bubbles to form?