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Flow Switches

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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.
$92.48