Direct low pressure valve is one kind of valve used to regulate fluid pressure. It controls the flow of fluid into the reservoir and is normally situated between a pump and a reservoir. A hand lever is used to open and close the valve, and a spring loaded diaphragm regulates fluid pressure. The fire suppression system works by using a detector tube attached to a cylinder valve to detect fire and apply the agent. The shielded cage contains the detection tube, which is always under pressure. Since it regulates and manages valve flow by opening, closing, or partially obstructing numerous passageways, it comes in different variety of designs. It is anti corrosive in nature and robust in construction.