The small return bypass line is commonly described as which term?

• A. Around the pump proportional
• B. Bypass around the pump
• C. Recirculation line
• D. Return line to tank

Answer: (A)

The small return bypass line is described as a proportional bypass around the pump. This means it carries only a controlled portion of water back to the suction side (bypassing the pump) so the amount bypassed adjusts with system conditions, helping regulate discharge pressure and protect the pump when demand is low. Labeling it as proportional around the pump emphasizes that it’s not just a generic bypass or a return to the tank; it’s a managed flow split that varies with pressure or flow to keep the pump operating smoothly. The other terms describe different concepts—simply bypassing the pump without the proportional aspect, a general recirculation path, or returning water to the tank—so they don’t fit the specific function as accurately.