What is supervised valve?

Valve supervisory switches are used to monitor the open or closed position of the valves that control the water supply in the fire sprinkler system. Supervisory pressure switches monitor the status of the system air pressure in dry and pre-action systems.

What is the function of supervisory switch?

What is a supervisory switch? Supervisory switches detect the status of a fire sprinkler system and relay that information to a central, proprietary, or remote monitoring center or sound a local alarm. To properly maintain a fire sprinkler system, you need information.

What is a monitored sprinkler system?

Fire sprinkler systems automatically detect and then control, suppress, or extinguish fires. Water supplies can come from city water mains, dedicated storage tanks or ponds. Valves and alarm devices control and monitor the water’s flow.

What are supervisory devices?

88.2 Automatic Extinguishing System Supervisory Device. A device that responds to abnormal conditions that could affect the proper operation of an automatic sprinkler system or other fire extinguishing system(s) or suppression system(s), including, but not limited to: control valves. pressure levels.

What is a gate valve sensor?

The System Sensor OSY2 is used to monitor the open position of an Outside Screw and Yoke (OS&Y) type gate valve.

What is the difference between pressure switch and flow switch?

What’s the Difference? Pressure Switches are activated when you reach a certain pressure: between 500-700 PSI. When the pressure meets this threshold, the switch is used to activate the burner for hot water. Flow Switches are activated by the recognition of water flow.

What is a supervised automatic sprinkler system?

Sprinkler supervision is intended to ensure the overall integrity of the piping system by providing a method to verify all control and isolation valves are fully open.

How does a sprinkler valve work?

Alarm Valve This is accomplished by providing a one way (check) valve that is closed when the water pressure on the fire sprinkler side of the valve exceeds the water supply pressure. When the pressure equalises or falls below the water supply pressure, the valve opens to enable water flow.

What is OS & Y gate valve?

QUICK. April 2012. One type of valve commonly used to control water flow to fire sprinkler systems is known as an OS&Y gate valve. OS&Y means “outside stem and yoke” or “outside screw and yoke”. OS&Y gate valves operate by opening and closing via a gate, which lowers into or rises out of the valve.

How does a fire sprinkler valve work?

Each sprinkler head is attached to a pipe that connects to a reliable water source outside the building. When heat activates a sprinkler head, a valve opens, allowing pressurized water from the pipe system to flow out. It’s important for water in a fire sprinkler system to be pressurized.