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Page number 12
4.12 Rev. 9-14 Shaded area indicates change MUELLER® FLEXIBLE DISC CHECK VALVE Model 851A ❏ Sizes–2",2-1/2",3",4",6",8",10",12",14",16",18",20",24" ❏ Ductileironbodyandcover ❏ Epoxycoatedinterior&exteriorforcorrosionresistance ❏ CertifiedtoANSI/NSF61 ❏ Stainlesssteelbolts ❏ Bunaencapsulatedsteelflexiblediscwithnylonfabricreinforcement ❏ Verticalorhorizontal(flowupwards)installation ❏ 250psig(1725kPa/17barg)maximumworkingpressure,500psig(3450kPa/35barg)testpressure Options ❏ EPDMdisc Check Valve Parts Part Number 1 2 3 4 5 6 7 Description Body Bonnet Gasket Disc BonnetBolts Plug Material DuctileIron DuctileIron Rubber Steel/Bunaor EPDM Steel DuctileIron Material Standard ASTMA536▼ ASTMA536▼ ASTMD2000BK807 ASTMA36/D2000 SAEGrade5 ASTMA536▼ InteriorLining Epoxy Dimensions** Valve Size* 2" 2-1/2" 3" 4" 5" 6" 8" 10" 12" 14" 16" 18" 20" 24" A 8.00 8.50 9.50 11.50 13.75 15.00 19.50 24.50 27.50 31.00 32.00 36.00 40.00 18.00 B 2.00 2.50 3.00 4.00 5.00 6.00 8.00 10.00 12.00 14.00 16.00 18.00 20.00 24.00 C 3.38 3.38 3.88 4.63 5.13 5.88 7.63 9.88 11.38 13.38 15.38 17.13 19.13 22.75 D 8.38 8.38 9.00 9.63 10.25 11.00 13.75 16.00 18.50 20.50 23.50 25.25 29.25 32.75 Valve Size* 2" 2-1/2" 3" 4" 5" 6" 8" 10" 12" 14" 16" 18" 20" 24" Weight** 22 30 40 71 120 125 222 372 514 696 987 1,340 1,670 2,147 *Nominal **All dimensions are in inches. All weights are in pounds and are approximate. ▼ Material strength ASTM A536 65-45 minimum
Page number 13
MILLIKEN® SA SERIES SECURITY CHECK VALVE ❏ Catalog number - 0600-850M-0 ❏ Size–6" ❏ Ductileironbodyandcover ❏ 100%unobstructedflowpath ❏ Inheritnon-slam,quietoperation ❏ Bubble-tightshutoff,withoutbackflow ❏ SwivelMJglandononeendaidspipeorvalvealignment ❏ Liquidthermosettingepoxycoatedinterior ❏ Universalprimerenamelonexterior ❏ Stainlesssteelbolts ❏ Domedbonnetforeasyinspectionofflexiblediscandseat ❏ Universalprimerenamelonexterior ❏ Ratedat250psi(1725kPa/17barg) Shaded area indicates change Rev.10-15 4.13 Check Valve Parts Part Number 1 2 3 4 5 6 7 Description Body Washer CoverBolt Cover Disc O-ring SwivelFlange Material DuctileIron StainlessSteel StainlessSteel DuctileIron DuctileIronandEPDM Rubber DuctileIron Material Standard ASTMA536 A276Type304 A276Type304 ASTMA536 ASTM536andD2000 ASTMD2000 ASTMA536 Dimensions** Valve Size* 6" A 17.63" B 24.50" C 6.90" D 8.02" E 6.81" F 11.00" Weight** 175 *Nominal **All dimensions are in inches. All weights are in pounds and are approximate.
