Markets served by Viking Gear Pumps

Internal gear pumps are very versatile in terms of the application they can cover. From very thin liquids (less than 1 cps) to very thick liquids (more than 100,000 cps), clean liquids to abrasive liq…

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Pumping Polyols for Polyurethan (PU) Foam Industry

We will be discussing about the selection of gear pump for Polyol with fillers added in it. Before going to the selection, let us first understand about the Types and Uses of POLYOLS and FILLERS.


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What if diaphragm fails in an AODD pump?

AODD pumps have been gaining popularity since last couple of decades & now find their presence in every industrial segment because of their ability to pump wide range of fluids. Let it be corrosive, a…

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What is Pump?

A pump is mechanical device which is used to transfer fluid from one point to another point, usually from lower elevation to higher elevation. The pump performs this action with the help of a prime mo…

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Regeneration of Transformer Oil

Transformer is one of the main assets in the electrical power industry which needs to be maintained for guaranteed uninterrupted power transmission. Transformer oils are important for the functional t…

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Centrifugal vs PD Pump

According to the Hydraulic Institute (HI) pumps are classified in two families i.e, positive displacement and centrifugal (roto-dynamic), both having their best areas of application and uses. However,…

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Pumping Isocyanates for Polyurethane (PU) Foam Industry

Before starting with the selection of the pump, let us first understand about the uses, types and properties of Isocyanates.

Isocyanates are a family of highly reactive, low molecular weight chemic…

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How to Select AODD Pump? Parameters to consider

Factors to be considered while selecting the AODD pump are as follows:

1.Fluid – The most important factor to be considered is the Type, Composition and Nature of the fluid in order to avoid th…

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For a petrochemical plant, customer ordered an Air Operated Double Diaphragm pump to lift water from an underground pit for intermittent application. The pit was 5 meter deep and custome…

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Diaphragms separate air and liquid chambers of an AODD (Air Operated Double Diaphragm) Pump. Failure of diaphragm will not only stop the pump operation but also result in leakage of the process fl…

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1. Which standard is put forth by the American Petroleum Institution (API) which covers the requirement for rotary positive displacement process pumps and pump units for use in the petroleum, petrochemical, and gas industry services?
  • API 610
  • API 674
  • API 676
  • API 682
2. If the main air valve of an Air Operated Double Diaphragm (AODD) pump centers, what will happen?
  • Nothing, the pump will operate as usual
  • Pump will stop
  • Liquid will leak from pump
  • Pump will be noisy
3. What is the maximum pressure rating available for pinch valves?
  • 10 bar
  • 10 bar
  • 100 bar
  • 500 bar
4. Which of the following is seal-less pump design?
  • Magnetic drive gear pump
  • Peristaltic hose pump
  • Air Operated Double Diaphragm Pump
  • All of the above
5. Why the circumferential piston pump can sustain higher pressure than tri-lobe pump?
  • Rotor material is special stainless alloy
  • Heavy duty bearing design
  • Strong shaft
  • Rotor width is more

Score =

Correct answers:

Hope you enjoyed it. Thanks for your time.