The 7243 is an essential component of power steering systems that allows the helm pump to operate reliably when power-driven hydraulic pumps are not operational. The 7243 valve retains the hydraulic fluid in the steering system, ensuring the helm pump remains functional. 

When used with a 7147 or 7148 Power Assist Unit from Kobelt, it is important to have a buffer system to allow for shifting to manual mode. The 7243 requires a minimum pressure of 200 PSI [13.8 BAR].