The main components of a transfer pump are: The pump head, which pumps fluid The inlet and outlet pipes Control valve The inlet pipe connects the pump head to the source of fluid being pumped. The outlet pipe connects the pump head to another container or location where the fluid can be stored or transferred. The control valve controls how much fluid is allowed through each pipe based on how much pressure is being generated by the pump head. Transfer pumps are available in a variety of sizes and configurations, depending on their intended purpose and desired performance level.