Schweizer Fire Protection Co., Inc.

06/16/2026

Installation of a new kitchen exhaust hood featuring custom stainless steel panels and a fire suppression system has been completed. On to the next!

06/11/2026

Business trip with a little magic on the side.

05/25/2026

Happy Memorial Day! Thank you to all who sacrificed for our nation.

Today, we pause to honor the brave men and women who made the ultimate sacrifice in service to our nation.

At National Fire Protection Association (NFPA), we wish you a meaningful and safe Memorial Day.

04/24/2026

New 6” tyco dry valve installed.

03/28/2026

Fire pump test today!

03/28/2026

Based on the detailed diagram you provided, here is a short explanation of how a Fire Sprinkler System Riser works:
Summary of Operation
A Fire Sprinkler System Riser (the large vertical black pipe) is the central nerve center for a building's fire suppression system. It manages and monitors the water supply to the sprinklers and triggers vital alarms.
* Continuous Monitoring: The Supply Pressure Gauge constantly monitors the pressure of the incoming water supply, while the Re**rd Chamber Pressure Gauge monitors the system's internal pressure.
* The Check Valve: When a sprinkler head activates due to a fire, the drop in system pressure causes the main Alarm Check Valve (the red central component) to open. This allows water from the supply to flow into the sprinkler system piping to suppress the fire.
* Preventing False Alarms: A small portion of this flowing water enters the Re**rd Chamber, which acts as a surge tank. It fills up only when there is sustained flow, filtering out small, temporary pressure surges that might occur, preventing the alarm from going off accidentally.
* Water Flow Detection: Once the re**rd chamber is full, water activates the Model PCN Pressure Switch. This completes an electrical circuit, sending a signal to the Fire Alarm Control Panel (FACP) and, if equipped, the Mechanical Water Motor Alarm (Gong) to sound the alarm throughout the building.
Essentially, the riser ensures water is ready when needed, reliably detects true fire events, and ensures the proper warnings are activated.