Product Overview

Series AGD
Air Gap Drains for Use
With 825Y, 825YD and 826YD
Reduced Pressure Devices
AGD-Y:
3
⁄4" - 2" (20mm - 50mm) / PN 905082
AGD-L: 2
1
⁄2" - 10" (65mm - 250mm) / PN 905083
ES-F-AGD
S P E C I F I C A T I O N S H E E T
Features
• Reducesamountofwatersplashinginareaaroundreduced
 pressureassemblies.
• Funnelsminorreliefvalvedischargeintodrain.
• Conformstoairgapinstallationrequirements.
Operation
TheFEBCOAirGapDrainisdesignedtobeinstalledunderthe825Y
3
⁄ 4 "-2"(20-50mm)and825YD2
1
⁄ 2 "-10"(65-250mm)reducedpressure
assembliestocatchminorreliefvalvedischargeduetopressurefluctua-
tionsand/orminorcheckvalvefouling.
NOTE: Thegapdrainisnotdesignedtocatchthemaximumdischargepos-
siblefromthereliefvalve.TheinstallationofFEBCOairgapwiththedrain
lineterminatingaboveafloordrainwillhandleanynormaldischargeornui-
sancespittingthroughthereliefvalve.However,floordrainsizemayneed
tobedesignedtopreventwaterdamagecausedbyacatastrophicfailure
condition.Donotreducethesizeofthedrainlinefromtheairgapfitting.
Specifications
Theairgapdrainshallbecorrosionresistantmaterialwithstainlesssteel
mountingfasteners.Thedrainmustbeofadesignthatallowsmountingby
attachmentofthedraintothereliefvalveofareducedpressureassembly.
TheairgapdrainshallbeFEBCOSeriesAGDorpriorapprovedequal.
NOTE:Consultlocalcodestoinsuredraininstallationmeetsallrequirements.
Dimensions – Weights
Size:
3
⁄ 4 " - 10" (20 - 250mm)
Materials
Funnel:Corrosionresistant
MountingFasteners:StainlessSteel
Typical Installation
CAUTION: Thisdrainisintendedtocatchminorreliefvalvedischargesdue
tolinepressurefluctuationsandminorcheckvalvefouling.Undercertain
conditionsreliefvalvescandischargewateratratessignificantlygreater
thanthedraincapacity.
1. Beforeinstallationchecklocalcodes.Thistypeofdrainmaynotbe
approvedforuseinsomeareas.
2.AfterinstallationofRPdeviceandpiping,attachdrainfunnelontopipe.
DonotusetheRPdevicetosupportthedrainpipeweight.
3.Sizes:
3
⁄ 4 ",1",&1
1
⁄ 4 "(20,25,32mm):Attachfunnelwiththeshorterbolt
bythreadingthroughthefunnelintothetappedholeinthereliefvalve
body.
 Sizes:1
1
⁄ 2 "and2"(40&50mm):Replacethelowercoverboltwiththe
suppliedlong(relieveallpressureinthedevicebeforeremovingthe
coverbolt).Attachspacertofunnelusingsmallerboltandnut.Position
funnel/spacerovertheprotrudingboltendandsecurewiththesupplied
nut.
Job Name
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Contractor
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Job Location
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Approval
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Engineer
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Contractor’s P.O. No.
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Approval
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Representative
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SIZE (DN) DIMENSIONS WEIGHTS
A B C
in. mm in. mm in. mm. in. lbs. kgs.
3
⁄4-1
1
⁄4 20 - 32 6
1
⁄2 165 2 51 1" Pipe .12 .05
1
1
⁄2 - 2 40 - 50 7
1
⁄2 191 2
3
⁄4 70 1" Pipe .12 .05
2
1
⁄2 65 12
1
⁄4 3 11 5
3
⁄4 146 2" NPT 7 3.2
3 80 12
1
⁄2 318 5
3
⁄4 146 2" NPT 7 3.2
4 100 12
3
⁄4 324 5
3
⁄4 146 2" NPT 7 3.2
6 150 13 330 5
3
⁄4 146 2" NPT 7 3.2
8 200 13
1
⁄2 343 5
3
⁄4 146 2" NPT 7 3.2
10 250 13
3
⁄4 349 5
3
⁄4 146 2" NPT 7 3.2
Note:Dimensionsarenominal.Allowancesmustbemadefornormal
manufacturingtolerances.
A
B (Air Gap)
3
⁄4" - 2" (20 - 50mm) Pipe Slip Fit
2
1
⁄2" - 10" (65 - 250mm)
NPT Thread
C
USA: 4381 N. Brawley • Ste. 102 • Fresno, CA • 93722 • Tel. [phone] • Fax: [phone] • www.FEBCOonline.com
Canada: 5435 North Service Rd. • Burlington, ONT. • L7L 5H7 • Tel. [phone] • Fax: [phone] • www.FEBCOonline.ca
ES-F-AGD 0652 © 2009 FEBCO
A Watts Water Technologies Company
FEBCO product specifications in U.S. customary units and metric are approximate and are provided for
reference only. For precise measurements, please contact FEBCO Technical Service. FEBCO reserves the
right to change or modify product design, construction, specifications, or materials without prior notice
and without incurring any obligation to make such changes and modifications on FEBCO products pre-
viously or subsequently sold.