SOVAL DN50 Manual

Date:Apr. 7th, 2021
Rev.A
OPERATION&MAINTENANCEINSTRUCTION MANUAL
Vane-typeWaterFlowDetectors,SaddleConnection
1
Specifications:
ServicePressure: 450 psi
FlowSensitivityRange forSignal:15-37.8L/min(4-10 GPM)
Contact Ratings: 8Aat125 / 250VAC; 3Aat 24VDC;2.5Aat 30VDC
Operating TemperatureRange: 0 -49
Compatiblepipe:steelpipe, schedule10 ~40
MaximumSurge:18 FPS(5.5m/s)
UL Listed, FMApproved
CAUTION!
Vane-type waterflowdetectorsthat aremonitoringwet pipe systemsshall notbe used indry pipe, deluge, or
pre-action systems.The surgesofwaterinsuchsystemsmaybreakthe vane ordamage the mechanism.
Do not useinpotentiallyexplosiveatmospheres.
General Information
Waterflowdetectorsaremounted towater-filled pipesin sprinklersystems.Itisused on steelpipe,schedules
10 through 40, sizes50mm thru200mm (2 thru8 ). SeeTable1fordetectorssizes.
Waterflowinthe pipe deflectsavane, whichtriggersaswitchusuallyafteraspecified delayperiod.Allwater
flowdetectorshaveapneumaticallycontrolled mechanicaldelaymechanism.Delaysreset ifthe flowof water
stopsbeforethe entiredelayhaselapsed. Allswitchesareactuatewhen the waterflowrateis10 gallonsper
minuteorgreater,but willnot actuateif the rateisless than 4gallonsperminute.Thisinstallation manual
coversthe following waterflowdetectorsforsprinkler.
Table1Detectorssizes
Nominal Pipe Size Model Max. PressureRating(psig)
DN50 2 811-020 450
DN65 2.5 811-025 450
DN80 3 811-030 450
DN100 4 811-040 450
DN125 5 811-050 450
DN150 6 811-060 450
DN200 8 811-080 450
Installation Guidelines
NOTE:Donotleave cover offforanextendedperiodoftime.
1. Thesedevicesmaybe mounted on horizontalorvertical pipe.Onhorizontal pipe theyshallbe installed on
the top side of the pipe wheretheywillbe accessible.Besurethereisadequateclearanceforinstallation and
removal.See Fig.1formounting dimensions.
2. The deviceshouldnot beinstalled within15cmofafitting whichchange the direction ofthe waterflowor
within60cmof avalveordrain

Date:Apr. 7th, 2021
Rev.A
OPERATION&MAINTENANCEINSTRUCTION MANUAL
Vane-typeWaterFlowDetectors,SaddleConnection
2
3. Drainthe systemand drillaholeinthepipe.And be surethe holeisperpendiculartothe centerofthe pipe,
asshowinFig.2. Ifthe holeisoffcenter,the vane willbind againstthe inside wallofthe pipe. Useaholesawin
aslowspeed drilltocut aholeof theproperdiameter,asshowinTable2.
4.Removeburrsand sharpedgesfromthe hole.Clean and removeall scaleand foreign matterfromthe inside
of the pipe foradistanceequal tothe pipediameteron eitherside of the hole. Clean theoutside ofthe pipeto
removedirt, metalchips, and cutting lubricant.
5. Rollthe vane sothatit maybe inserted intothe hole;do not bend orcreaseit.Seatthe gasket against the
saddleand mountthe detectorintothe pipe.Insert the vane sothatthe arrowon the saddlepointsinthe
direction of the waterflow. The bushing shouldfitinsidethe holeinthe pipe.
6. Installthe U-bolt and tighten nutsalternatelytoensureauniformseal(see the Table2fortorque values).
Fig.1Mounting dimensionsFig.2Mounting holelocation
7. The vane must not rub the inside ofthepipe orbind in anyway. If the vane binds, removethe detectorand
correctthe causebeforeproceeding.
8. Ensurethat thedirectionofarrowon the saddlepoint shouldbe consistent withthe direction of the water
flow. See Fig.3.
Notes:Remove burrs fromedgeofhole. Cleanoutscaleandforeignmatter frominsidewall ofpipe.
Table2Maindimensions
Nominal Pipe
Size
Nominal Pipe
Size
OD.
Pipe wallthickness L H Hole
size U-BoltNuts torque
Schedule10 Schedule40
mm in mm in mm in mm in mm mm mm Nm
DN50 2 60.3 2.375 2.77 0.109 3.91 0.154 84 188 32+1 40-50
DN65 2.5 73.0 2.875 3.05 0.12 5.16 0.203 92 200
DN80 3 88.9 3.500 3.05 0.12 5.49 0.216 104 220
51+1 70-95
DN100 4 114.3 4.500 3.05 1.12 6.02 0.237 133 245
DN125 5 141.3 5.563 3.40 0.134 6.55 0.258 160 272
DN150 6 168.3 6.625 3.40 0.134 7.11 0.280 187 298
DN200 8 219.1 8.625 3.76 0.148 8.18 0.322 240 350
(Thistorque isonlyfornormaluse.The type test torqueisrecommended tobe appropriatelyincreased.)

Date:Apr. 7th, 2021
Rev.A
OPERATION&MAINTENANCEINSTRUCTION MANUAL
Vane-typeWaterFlowDetectors,SaddleConnection
3
Wiring
1.AllmodelhavetwoSPDT switches，one can be usedtooperateacentral station,whilethe othercontactis
used tooperatealocal audibleorvisualannunciator.SwitchcontactsCOMand NOareclosed whenwateris
flowing and open when itisnot. Connectthe switches, asshowninFig.4,depending on the application.
2. Aground screwisprovided withallwaterflowdetectors.When grounding isrequired,clampwirewithscrew
inholelocated between conduit entranceholes.See Fig.5.
3. If asecond conduit entry isrequired,removetheknockout plug: Placescrewdriveratinside edge of
knockouts, notinthe center.
Fig.3AssemblydiagramFig.4Typical electricalconnections
Retard Adjustment
The delaycan be adjusted byrotating the retardadjustmentknob from0tomaxsetting. Toadjustthe setting,
turntheadjustmentknob clockwisetoincreasethe delay,counterclockwisetodecreaseit.The timedelay
shouldbe set at the minimumrequired topreventfalsealarms.
Maintenance
Inspect detectorsmonthly.Ifleakarefound, replacethedetector.
Fig.5Ground screw