• Prevents excessive water spillage during tip changes – When a robotic spot welding gun swaps tips or dressers, cooling water pressure can cause a burst of coolant to escape if not controlled; a water saver identity or similar actuator system stops or reduces flow at that moment. • Protects equipment and floors – Excessive coolant expulsion can damage equipment or make the floor slippery; these devices help contain that. • Reduces coolant waste – By shutting off flow automatically around the tip change sequence, less water (or coolant mixture) is lost.