Flow Switches
A water flow detector is an electro-mechanical device designed to send an alarm to a fire alarm panel and/or fire department when a continuous flow of water occurs through the fire sprinkler system's piping from an activated sprinkler head or leak in the system.
1" Waterflow Alarm Switch with Retard
SKU# 4684
The Model VSR is a vane type waterflow switch for use on wet sprinkler systems. The VSR may also be used as a sectional waterflow detector on large systems. The VSR contains two single pole, double throw, snap action switches and an adjustable, instantly recycling pneumatic retard. The switches are actuated when a flow of 10 GPM (38 LPM) or more occurs downstream of the device. The flow condition must exist for a period of time necessary to overcome the selected retard period.
$147.15
2" Waterflow Alarm Switch with Retard
SKU# 4669
The Model VSR is a vane type waterflow switch for use on wet sprinkler systems. The VSR may also be used as a sectional waterflow detector on large systems. The VSR contains two single pole, double throw, snap action switches and an adjustable, instantly recycling pneumatic retard. The switches are actuated when a flow of 10 GPM (38 LPM) or more occurs downstream of the device. The flow condition must exist for a period of time necessary to overcome the selected retard period.
$158.98
2-1/2" Waterflow Alarm Switch with Retard
SKU# 4522
The Model VSR is a vane type waterflow switch for use on wet sprinkler systems. The VSR may also be used as a sectional waterflow detector on large systems. The VSR contains two single pole, double throw, snap action switches and an adjustable, instantly recycling pneumatic retard. The switches are actuated when a flow of 10 GPM (38 LPM) or more occurs downstream of the device. The flow condition must exist for a period of time necessary to overcome the selected retard period.
$158.98
3" Waterflow Alarm Switch with Retard
SKU# 4864
The Model VSR is a vane type waterflow switch for use on wet sprinkler systems. The VSR may also be used as a sectional waterflow detector on large systems. The VSR contains two single pole, double throw, snap action switches and an adjustable, instantly recycling pneumatic retard. The switches are actuated when a flow of 10 GPM (38 LPM) or more occurs downstream of the device. The flow condition must exist for a period of time necessary to overcome the selected retard period.
$158.98
4" Waterflow Alarm Switch with Retard
SKU# 4739
The Model VSR is a vane type waterflow switch for use on wet sprinkler systems. The VSR may also be used as a sectional waterflow detector on large systems. The VSR contains two single pole, double throw, snap action switches and an adjustable, instantly recycling pneumatic retard. The switches are actuated when a flow of 10 GPM (38 LPM) or more occurs downstream of the device. The flow condition must exist for a period of time necessary to overcome the selected retard period.
$158.98
5" Waterflow Alarm Switch with Retard
SKU# 4754
The Model VSR is a vane type waterflow switch for use on wet sprinkler systems. The VSR may also be used as a sectional waterflow detector on large systems. The VSR contains two single pole, double throw, snap action switches and an adjustable, instantly recycling pneumatic retard. The switches are actuated when a flow of 10 GPM (38 LPM) or more occurs downstream of the device. The flow condition must exist for a period of time necessary to overcome the selected retard period.
$163.52
6" Waterflow Alarm Switch with Retard
SKU# 4518
The Model VSR is a vane type waterflow switch for use on wet sprinkler systems. The VSR may also be used as a sectional waterflow detector on large systems. The VSR contains two single pole, double throw, snap action switches and an adjustable, instantly recycling pneumatic retard. The switches are actuated when a flow of 10 GPM (38 LPM) or more occurs downstream of the device. The flow condition must exist for a period of time necessary to overcome the selected retard period.
$127.71
2" Yoke Valve Supervisory Switch and Outside Screw
SKU# 4595
The OSYSU is used to monitor the open position of an OS&Y (outside screw and yoke) type gate valve.
$111.82
