Delay units are available to prev.
Vane type water flow switch.
Vane type water flow switches are used to generate a fire alarm signal based on a water flow discharge event from a wet pipe fire sprinkler system.
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 basics of water flow switches.
As the name stipulates they feature a vane or paddle that sits in the path of water and moves when it flows.
The unit may also be used as a sectional waterflow detector on large systems.
It is ul listed and fm approved for use on steel pipe.
Schedules 10 through 40 sizes 2 thru 8 50 mm thru 200 mm.
Water flow detec tors used in these types of systems may result in an unintended discharge caused by a surge trapped air or a.
It is ul listed for use on a steel pipe.
A minimum flow of 10 gpm 38 lpm is required to activate this device.
The model vsr is a vane type water flow switch for use on wet sprinkler systems.
The unit contains two single pole double throw snap action switches and an adjustable instantly recycling pneumatic.
It is ul listed and fm approved for use on steel pipe.
They are used in sprinkler system to transmit electrical information due to the flow when a sprinkler head gets activated.
Schedules 5 through 40.
Vane or paddle type flow switches work in wet pipe systems only.
But in dry systems where water quickly replaces compressed air when sprinklers activate that paddle could be damaged or broken off.
These devices sometimes fail and often they are incorrectly installed maintained or tampered with.
These devices are tested at least annually sometimes quarterly.
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.
The potter vsr is a vane type waterflow switch with non corrosive insert for use on wet sprinkler systems.
Models available for pipe sizes 2 through 10.
The vsr may also be used as a sectional water flow detector on large systems.
Removal of waterflow switch to prevent accidental water damage all control valves should be shut tight and the system.
Vane type water flow detectors shall not be used as the sole initiating device in both deluge and preaction systems.
The potter vsr series is the industry standard for flow switches for fire sprinkler systems and is compatible with the widest range of.
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.
The model wfdnft is a vane type water flow detector for use in wet pipe fire sprinkler systems only.
