
A wet system consists of a wet alarm valve assembly, closed sprinkler heads, water flow indicators, control valves, end water test devices, piping, and water supply facilities. The pipes of the system are filled with pressurized water, and in the event of a fire, water is immediately discharged once the sprinkler heads are activated. Additional Information: 1. When a fire occurs, the ambient temperature around the fire source rises, causing the sprinkler heads above the fire to open and release water, leading to a drop in pipe network pressure. The subsequent pressure drop behind the alarm valve causes the valve plate to open, connecting the pipe network to the water source to supply water for firefighting. 2. Some water flows through the concave groove on the valve seat via the alarm valve's signal pipe, activating the hydraulic alarm bell to sound an alarm signal. If the pipe network is equipped with a water flow indicator, it can detect water flow and also send an electrical signal. If a pressure switch is installed in the pipe network, it can send an electrical signal when the water pressure drops to a certain level, initiating the water pump to supply water.

When modifying race cars, I frequently work with wet clutch systems, which primarily consist of clutch plates, a hydraulic control unit, oil pump, and cooling oil. The clutch plates are immersed in specialized oil, providing excellent heat dissipation during high RPM or aggressive driving to prevent overheating and melting. The system also includes a pressure plate and driven plate, utilizing oil pressure for smooth engagement and lightning-fast gear shifts. In contrast, dry systems operate with minimal oil, but wet systems offer greater durability and superior torque-handling capabilities. I always recommend checking oil levels and seals, as oil leaks can cause delayed shifting. Regular maintenance like oil changes and cleaning oil passages is crucial to ensure system stability during long-distance or mountain driving, enhancing overall vehicle performance.

As an experienced auto mechanic with years of practice, the basic components of a wet system include the clutch assembly, oil bath reservoir, hydraulic pump, and electronic control module. The clutch plates with friction materials are immersed in oil to reduce wear, while the oil pump circulates cooling oil to prevent component burnout due to high temperatures. Common issues such as oil seal aging leading to leaks or oil pump clogging causing rough shifting can be addressed by checking oil quality and ensuring unobstructed pipelines during repairs. The system design also incorporates safety valves and heat exchangers to maintain stable oil temperatures. Wet systems are more reliable than dry systems, especially for heavy-duty vehicles or frequent start-stop operations, reducing failure rates. A maintenance tip is to inspect and replace the oil every 20,000 kilometers.

I've been driving automatic transmission cars for over a decade. The key components of wet systems include clutch plates, hydraulic mechanisms, and cooling oil. During operation, the oil immerses the clutch to ensure smooth gear shifts without jamming, providing a more comfortable driving experience. Components like oil pumps maintain oil circulation to control temperature, while seals prevent leaks. If the system malfunctions, shifting may become rough or overheating may occur, making it difficult to start the car. From daily use perspective, wet systems have fewer issues and longer lifespan compared to dry systems, with simpler maintenance requiring only regular oil changes. I have technicians check the oil level during each service interval to ensure system health, which makes driving much more worry-free whether in city traffic or on highways.


