Vane Type Water Flow Switch

The basics of water flow switches.

Vane type water flow switch.

Flow switches vsr s vane type waterflow alarm switch with retard for small pipe the model vsr s is a vane type waterfl ow switch for use on wet sprinkler systems that use 1 25mm 1 32mm 1 38mm or 2 50mm pipe size. Vane type water flow detectors shall not be used as the sole initiating device in both deluge and preaction systems. These devices are tested at least annually sometimes quarterly. Instrumentation products flow measurement flow switch vane type ask price flow switch is the target type unit that works on the magnetic principle of attraction.

The unit contains two single pole double throw snap action switches and an adjustable instantly recycling pneumatic. The model vsr is a vane type water flow switch for use on wet sprinkler systems. They are used in sprinkler system to transmit electrical information due to the flow when a sprinkler head gets activated. But in dry systems where water quickly replaces compressed air when sprinklers activate that paddle could be damaged or broken off.

Water flow detec tors used in these types of systems may result in an unintended discharge caused by a surge trapped air or a. Lpc approved sizes are 2 thru 8 50 mm thru 200 mm. It is ul listed and fm approved for use on steel pipe. The potter vsr series is the industry standard for flow switches for fire sprinkler systems and is compatible with the widest range of.

The potter vsr is a vane type waterflow switch with non corrosive insert for use on wet sprinkler systems. As the flow causes the flapper to deflect the magnet moves closer to or further away from the switch causing the reed switch to actuate. Vane or paddle type flow switches work in wet pipe systems only. The model vsr s is a vane type waterflow switch for use on wet sprinkler systems that use 1 25mm 1 32mm 1 38mm or 2 50mm pipe size.

It is ul listed and fm approved for use on steel pipe. The vsr may also be used as a sectional water flow detector on large systems. It is ul listed for use on a steel pipe. Removal of waterflow switch to prevent accidental water damage all control valves should be shut tight and the system.

These devices sometimes fail and often they are incorrectly installed maintained or tampered with. Schedules 5 through 40. A minimum flow of 10 gpm 38 lpm is required to activate this device. Delay units are available to prev.

As the name stipulates they feature a vane or paddle that sits in the path of water and moves when it flows. Models available for pipe sizes 2 through 10. The model vsr is a vane type waterflowswitch for use on wet sprinkler systems. Schedules 10 through 40 sizes 2 thru 8 50 mm thru 200 mm.