What do drain valves on the line side allow the operator to do?

Drain valves on the line side are specifically designed to relieve hose pressure. When water is conveyed through a hose, especially during operations involving mobile water supply systems, pressure can build up. This pressure can create safety hazards, such as bursts in the hose or difficulty in disconnecting the hose from fittings.

By using drain valves, operators can safely release this pressure from the hose system before making any changes to the setup, such as disconnecting hoses or aligning equipment. This function is crucial for maintaining safety and ensuring that the system can be managed without risk of water pressure causing accidents or damage.

While increasing water pressure, changing the direction of flow, or conducting emergency shutdowns are important operations in various contexts, these functionalities are not the primary role of drain valves on the line side. Their main purpose remains focused on safely managing and relieving pressure in the system.