On a positive displacement pump, isolation valves on both sides are typically used for what?

On a positive displacement pump, isolation valves on both sides are typically used for what?

• A. making suction better
• B. making discharge better
• C. using them when replacing pump only
• D. for maintenance only

Answer: (C)

Isolation valves on both sides of a positive displacement pump are there to shut off flow so you can safely remove or replace the pump without draining the entire system or spilling product. When the pump needs to be swapped out, closing the upstream and downstream valves isolates it, making installation of a new unit quick and minimizing downtime and exposure. These valves don’t improve suction or discharge performance; their primary practical use is enabling pump replacement, though they can help during maintenance as well.

Isolation valves on both sides of a positive displacement pump are there to shut off flow so you can safely remove or replace the pump without draining the entire system or spilling product. When the pump needs to be swapped out, closing the upstream and downstream valves isolates it, making installation of a new unit quick and minimizing downtime and exposure. These valves don’t improve suction or discharge performance; their primary practical use is enabling pump replacement, though they can help during maintenance as well.