What type of pump is shown in the...

🔍 Key Concepts

• Observe how many rotors/screws are shown (look for the labeled power rotor and idler rotors). • Identify where the inlet/suction bell is located in relation to the length of the screws (at the end or near the center). • Recall that hydraulic balance in screw pumps is related to where suction enters along the screw length.

💭 Think About

• From the cross‑section, how many separate helical elements actually rotate and mesh together in the pumping chamber? • Does the fluid enter right at one end of the screw assembly or closer to the middle of the screw length? How would that affect axial thrust on the rotors? • Which answers match both the rotor count you see and the suction location you identify in the drawing?

✅ Before You Answer

• Carefully count distinct screws/rotors in the illustration before choosing between “double” and “triple.” • Locate the inlet bell/suction port on the figure (check the parts list numbers) to decide between “center” and “end” suction. • Ensure your final choice matches both: correct number of screws and correct suction location; eliminate any option that only matches one of these.

What type of pump is shown in the illustration? See illustration GS-0144.

Double screw rotary pump with suction at the center for hydraulic balance

Triple screw rotary pump with suction at the center for hydraulic balance

Double screw rotary pump with end suction

Triple screw rotary pump with end suction

🔍 Key Concepts

💭 Think About

✅ Before You Answer