What is the primary function of gate valves in a lift station?

The primary function of gate valves in a lift station is to isolate the lift station from the wastewater collection system during maintenance. This is crucial for ensuring safety and preventing backups or spills while maintenance activities are being performed. When a gate valve is closed, it creates a barrier that prevents wastewater from flowing into or out of the lift station, allowing workers to safely conduct repairs or inspections without risk of exposure to hazardous materials or situations.

While controlling flow direction and regulating pressure are important aspects of fluid systems, these functions are typically managed by different types of valves designed specifically for those purposes. Similarly, filtering out solids is handled by different equipment and mechanisms, as gate valves are not designed for that function. Thus, the isolation purpose is the key role of gate valves in this context.