The Rapidrop Model RDWFDR-2 is a Vane type Waterflow detector for use on wet sprinkler systems. It is FM Approved & UL Listed for use on steel pipe. Available in sizes 50mm to 200m. The Vane insert is non-corrosive and the enclosure is suitable for indoor or outdoor use. The waterflow detector switch contains two single pole, double throw, snap action switches and an adjustable pneumatic retard. The switches are actuated when a flow of 10 GPM (38 LPM) or more occurs downstream of the device. This flow condition must exist for a period of time long enough to overcome the selected retard period.
The Model VSR-F is a vane type waterflow switch for use on wet sprinkler systems. It is UL Listed and FM Approved for use on steel pipe; schedules 10 through 40, sizes 2″ thru 8″.LPC approved sizes are 2″ thru 8″ (50mm thru 200mm). The unit may also be used as a sectional waterflow detector on
large systems. The unit 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 gallons per minute or more occurs downstream of the device. The flow condition must exist for a period of time necessary to overcome the selected retard period. The OSYSU is used to monitor the open position of an OS & Y (outside screw and yoke) type gate valve. This device is available in two models; the OSYSU-1, containing one set of SPDT (Form C) contacts and the OSYSU-2, containing two sets of SPDT (Form C) contacts. These switches mount conveniently to most OS & Y valves ranging in size from 2″ to 12″. They will mount on some valves as small as 1/2″.
The cover is held in place by two tamper resistant screws that require a special tool to remove. The tool is furnished with each device and should be left with the building owner or responsible party
The new WFDN Series waterflow detectors from Safe Signal consists of a rugged, NEMA 4-rated enclosure that is more damage resistant than previous metal designs. The waterflow detector is
designed for both indoor and outdoor use, with the widest available temperature range, from 32°F to 150°F. They are also approved for installation on the widest range of pipe schedules, sizes 2 in. through 4 in. are approved for installation on pipe schedules 7 through 40. UL-listed models are equipped with tamper-resistant cover screws to prevent unauthorized entry. Inside, two sets of SPDT (Form C) synchronized switches are enclosed in a durable terminal block with new layout designed to make wiring easy with wire ready terminals, COM terminals are on a different elevation, large barrier between switches and easy to read raised textured lettering all make wiring easy. An optional cover tamper switch is available, securely snaps into place, no tools required.
The water flow indicator with delay function (ZSJZYS) is designed according to GB5135.7 and UL346 and FM1024. The water flow indicator is an important part of the automatic sprinkler system, usually
installed in the main pipe or branch pipe of the pipe system. When the vane detects the water flow, the water flow signal will be converted to electrical signal,and then switch on the alarm system or start the fire pump directly, at the same time, the fire zone will be indicated. The Model MXHQ Supervisory Switch is used to monitor the open or closestatus of an OS&Y
(outside screw and yoke) type gate valve. There are two sizes, the modelMXHQ D50servesthe
OS&Y Gate valves ranging in size from 2″ to 16″ (50mm to 400mm), the other model MXHQ
D450is fit for theOS&Y Gate valves ranging in size from 18″ to 24″ (450mm to 600mm) . Double Micro-switch Design This design could greatly reduce the possibility oferror as a result of faulty micro-switch
signal, multi-signal transmission, which would meet more customer needs;