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WATTS Backflow Preventers

Designed to prevent potable water contamination from the reverse flow of polluted water. Capable of bearing up to 180 psi pressures and have a maximum operating temperature of 180 degrees F

Filter


WATTS -

Double Check Backflow Preventers

StyleModelConnection TypeHeightMax. PressureTemp. RangePrice (ex. VAT)
A007M2-QT 1 1/2-----
RFQ
B1/2 007-QT-----
RFQ
CLF007M1-QT 1-----
RFQ
D1/2 LF007-QT-S-----
RFQ
ELF007M3-QT 3/4-----
RFQ
F1/2 LF007-QT-----
RFQ
GLF007M1-QT 2-----
RFQ
A007M2-QT 1 1/4NPT5"175 psi+33°F to +180°F€1,266.46
A1 1/2 LF007M2-QT-SNPT7.062"175 psi+33°F to +180°F€1,971.76
H1 LF007M1-QT-PRESSPress6 3/4"175 psi+33°F to +180°F€775.72
WATTS -

5000SS Series Reduced Pressure Zone Assemblies

StyleModelSeat MaterialBody PatternMax. Working PressureMin. Temp.TypeMeter TypeInlet TypeOutlet TypePrice (ex. VAT)
A5000SS-LG-GPM 3-Straight175 psi33°FKitGPMFlanged JointFlanged Joint€6,391.40
RFQ
A5000SS-LG-GPM 2 1/2-Straight175 psi33°FKitGPMFlanged JointFlanged Joint€5,835.98
RFQ
B5000SS-OSY-GPM 2 1/2RubberStraight175 psi33°FKitGPMFlanged JointFlanged Joint€7,186.51
RFQ
C5000SS-OSY-GPM 3RubberStraight175 psi33°FKitGPMFlanged JointFlanged Joint€7,944.50
RFQ
A5000SS-LG-GPM 6RubberStraight175 psi33°FKitGPMFlanged JointFlanged Joint€11,045.67
RFQ
C5000SS-OSY-GPM 6RubberStraight175 psi33°FKitGPMFlanged JointFlanged Joint€13,750.12
RFQ
C5000SS-OSY-GPM 4RubberStraight175 psi33°FKitGPMFlanged JointFlanged Joint€9,365.95
RFQ
A5000SS-LG-GPM 4RubberStraight175 psi33°FKitGPMFlanged JointFlanged Joint€7,623.75
RFQ
WATTS -

919 Series Reduced Pressure Zone Assemblies

StyleModelSeat MaterialBody PatternTypeValve TypeMax. Working PressureMin. Temp.Inlet TypeOutlet TypePrice (ex. VAT)
A919-QT 1 1/4Engineered PlasticInlineValve To AccessoryQuarter Turn Ball Valve175 psi33°FFemale ThreadedFemale Threaded€1,096.96
RFQ
B919-AQT 3/4PolymerN PatternValve To Accessory-175 psi33°FFemale ThreadedFemale Threaded€1,057.63
RFQ
B919-AQT 1/2PolymerN PatternKit-175 psi33°FFemale ThreadedFemale Threaded€918.36
RFQ
StyleModelMeter TypeSeat MaterialBody PatternMax. Working PressureMin. Temp.TypeInlet TypeOutlet TypePrice (ex. VAT)
ALFC500Z-OSY-CFM 2 1/2CFMRubberZ Pattern175 psi33°FKitFlanged JointFlanged Joint€6,907.98
RFQ
ALFC500Z-OSY-CFM 4CFMRubberZ Pattern175 psi33°FKitFlanged JointFlanged Joint€9,023.25
RFQ
ALFC500Z-OSY-CFM 8CFMRubberZ Pattern175 psi33°FKitFlanged JointFlanged Joint€23,251.19
RFQ
ALFC500Z-OSY-GPM 2 1/2GPMRubberZ Pattern175 psi33°FKitFlanged JointFlanged Joint€6,907.98
RFQ
WATTS -

Backflow Preventers

StyleModelMax. Working PressureMin. Temp.Inlet TypeOutlet TypeInlet Thread TypeBackflow Preventer TypePrice (ex. VAT)
A994-NRS------€5,932.47
B919A-QT-------
RFQ
CL7U2-2-TC 3/4150 psi33°FFemale ThreadedFemale ThreadedNPTDual Check€772.33
RFQ
DL7U2-2-TC-QT 1150 psi33°FFemale ThreadedFemale ThreadedNPTDual Check€987.57
RFQ
WATTS -

Ames Colt Series C400 Reduced Pressure Zone Assemblies

StyleModelInlet TypeOutlet TypeSeat MaterialBody PatternMax. Working PressureMin. Temp.TypeDisc MaterialPrice (ex. VAT)
AC400-OSY-FXG 6Flanged JointGrooved JointRubberStraight175 psi33°FKit-€10,387.25
RFQ
BC400-OSY 2 1/2Flanged JointFlanged JointRubberStraight175 psi33°FKitRubber€4,384.17
RFQ
BC400-DOSY 2 1/2Flanged JointFlanged JointRubberStraight175 psi33°FKit-€4,953.05
RFQ
BC400-OSY 6Flanged JointFlanged JointRubberStraight175 psi33°FKitRubber€10,387.25
RFQ
BC400-OSY 3Flanged JointFlanged JointRubberStraight175 psi33°FKitRubber€4,929.43
RFQ
BC400-DOSY 6Flanged JointFlanged JointRubberStraight175 psi33°FKit-€11,739.49
RFQ
AC400-OSY-GXG 3Grooved JointGrooved JointRubberStraight175 psi33°FKit-€4,929.43
RFQ
AC400-OSY-GXG 8Grooved JointGrooved JointRubberStraight175 psi33°FKit-€17,634.57
RFQ
AC400-NRS-GXG 3Grooved JointGrooved JointRubberStraight175 psi33°FKit-€4,905.81
RFQ
WATTS -

LFFBV Series Full Port Ball Valves

StyleModelMPNPrice (ex. VAT)
ALFFBV-M 1/2 ALFFBV-M 1/2 A€111.67
BLFFBV-M 3/4LFFBV-M 3/4€139.29
WATTS -

5000SS Series Reduced Pressure Detector Assemblies

StyleModelInlet TypeBody PatternMax. Working PressureMin. Temp.TypeMeter TypeOutlet TypeDisc MaterialPrice (ex. VAT)
A5000SS-DOSY-FXG-GPM 3Flanged JointStraight175 psi33°FKitGPMGrooved JointRubber€7,944.50
RFQ
B5000SS-DOSY-FXG-GPM 6Flanged JointStraight175 psi33°FKitGPMGrooved JointRubber€13,750.12
RFQ
C5000SS-DOSY-GXG-GPM 4Grooved JointStraight175 psi33°FKitGPMGrooved JointRubber€10,020.94
RFQ
D5000SS-DOSY-GXG-GPM 6Grooved JointStraight175 psi33°FKitGPMGrooved JointRubber€14,712.37
RFQ
WATTS -

3000SE Series Double Check Detector Backflow Preventer Assemblies

StyleModelInlet TypeSeat MaterialBody PatternMax. Working PressureMin. Temp.Disc MaterialBypass SizeMeter TypePrice (ex. VAT)
A3000SE-LG-CFM 2 1/2--------€7,544.42
RFQ
B3000SE-OSY-CFM 2 1/2--------€9,965.23
RFQ
C3000SE-LG-LM 2 1/2Flanged JointRubberStraight175 psi33°FRubber3/4"-€7,365.48
RFQ
D3000SE-OSY-LM 2 1/2Flanged JointRubberStraight175 psi33°FRubber3/4"-€9,784.59
RFQ
E3000SE-OSY-GPM 2 1/2Flanged JointRubberStraight175 psi33°FRubber3/4"GPM€9,965.23
RFQ
F3000SE-LG-GPM 2 1/2Grooved JointRubberStraight175 psi33°FRubber3/4"GPM€7,544.42
RFQ
WATTS -

200B Series Double Check Valve Assemblies

StyleModelBody FinishMax. Working PressureMin. Temp.TypePrice (ex. VAT)
A200B 1Plain175 psi33°FKit€562.17
RFQ
B200B 3/4Plain175 psi33°FKit€497.15
RFQ
A200B 2Plain175 psi33°FKit€1,167.35
RFQ
WATTS -

4000SS Series Reduced Pressure Zone Assemblies

StyleModelSeat MaterialBody PatternMax. Working PressureMin. Temp.TypeInlet TypeOutlet TypeDisc MaterialPrice (ex. VAT)
A4000SS-F-OSY 4-Straight175 psi33°FKitFlanged JointFlanged JointRubber€8,126.82
RFQ
B4000SS-LG 10-Straight175 psi33°FKitFlanged JointFlanged JointRubber€23,699.97
RFQ
C4000SS-NRS 10-Straight175 psi33°FKitFlanged JointFlanged JointRubber€32,039.30
RFQ
A4000SS-OSY 10RubberStraight175 psi33°FKitFlanged JointFlanged JointRubber€32,388.80
RFQ
WATTS -

957 Series Reduced Pressure Zone Assemblies

StyleModelMax. Working PressureTypeInlet TypeOutlet SizeOutlet TypeBody StyleSeat MaterialConnection TypePrice (ex. VAT)
A957-OSY 2 1/212.1 BarValve To AccessoryFlanged Joint2 1/2"FlangedInlineEngineered PlasticFlanged€6,236.47
B957-QT 312.1 BarValve To AccessoryGrooved Joint3"Grooved JointStraightEngineered Plastic-€6,139.84
RFQ
A957-OSY 312.1 BarValve To AccessoryFlanged Joint3"FlangedInlineEngineered PlasticFlanged€5,458.86
C957-NRS-S 2 1/212.1 BarValve To AccessoryGrooved Joint2 1/2"Grooved JointInlineEngineered Plastic-€4,343.63
RFQ
C957-NRS-S 412.1 BarValve To AccessoryGrooved Joint4"Grooved JointInlineEngineered Plastic-€6,433.59
RFQ
C957-NRS-S 312.1 BarValve To AccessoryGrooved Joint3"Grooved JointInlineEngineered Plastic-€5,299.15
RFQ
D957-BFG 412.1 BarValve To AccessoryGrooved Joint4"Grooved JointInline--€7,382.35
RFQ
D957-BFG 612.1 BarValve To AccessoryGrooved Joint6"Grooved JointInline--€11,690.55
RFQ
B957-QT 2 1/212.1 BarValve To AccessoryGrooved Joint2 1/2"Grooved JointStraightEngineered Plastic-€5,017.21
RFQ
E957-NRS 812.1 BarValve To AccessoryGrooved Joint8"Grooved JointInlineEngineered Plastic-€14,345.26
RFQ
E957-NRS 612.1 BarValve To AccessoryFlanged Joint6"Flanged JointInlineEngineered Plastic-€8,198.04
RFQ
F957-DNRS 4175 psiKitFlanged Joint4"Flanged JointInlineEngineered Plastic-€4,200.87
RFQ
D957-NRS-GXG 6175 psiKitGrooved Joint6"Grooved JointInlineEngineered Plastic-€10,652.33
RFQ
D957-OSY-GXG 8175 psiKitGrooved Joint8"Grooved JointInlineEngineered Plastic-€19,655.79
RFQ
D957-OSY-GXG 4175 psiKitGrooved Joint4"Grooved JointInlineEngineered Plastic-€7,115.62
RFQ
G957-DOSY 8175 psiKitGrooved Joint8"Grooved JointInlineEngineered Plastic-€19,655.79
RFQ
D957-OSY-GXG 3175 psiKitGrooved Joint3"Grooved JointInlineEngineered Plastic-€6,430.23
RFQ
D957-OSY-GXG 6175 psiKitGrooved Joint6"Grooved JointInlineEngineered Plastic-€11,319.15
RFQ
D957-OSY-GXG 2 1/2175 psiKitGrooved Joint2 1/2"Grooved JointInlineEngineered Plastic-€5,753.27
RFQ
H957-DNRS 2 1/2175 psiKitFlanged Joint2 1/2"Flanged JointInlineEngineered Plastic-€3,156.23
RFQ
G957-DOSY 4175 psiKitGrooved Joint4"Grooved JointInlineEngineered Plastic-€8,035.68
RFQ
H957-DNRS 3175 psiKitFlanged Joint3"Flanged JointInlineEngineered Plastic-€3,313.94
RFQ
H957-DNRS 10175 psiKitFlanged Joint10"Flanged JointInlineEngineered Plastic-€45,526.07
RFQ
H957-NRS 4175 psiKitFlanged Joint4"Flanged JointInlineEngineered Plastic-€4,200.87
RFQ
G957-DOSY 3175 psiKitGrooved Joint3"Grooved JointInlineEngineered Plastic-€7,267.54
RFQ
WATTS -

LF909 Small Series Reduced Pressure Zone Assemblies

StyleModelConnection TypeMax. PressureTemp. Range
A2 1/2 LF909-DNRSFlanged175 psi33°F to 110°F
RFQ
B6 LF909-DOSYFlanged175 psi33°F to 110°F
RFQ
WATTS -

LF009 Series Reduced Pressure Zone Assemblies

StyleModelSeat MaterialBody FinishStrainerMax. Working PressureTypeInlet TypeOutlet SizeOutlet TypePrice (ex. VAT)
ALF009M2-QT-S 1--------€971.92
BLF009M3-QT 3/4Engineered PlasticPlainNo12 BarValve To AccessoryFemale Threaded3/4"Female Threaded-
RFQ
CLF009M3-QT-S 3/4Engineered PlasticPlainYes12 BarValve To AccessoryFemale Threaded3/4"Female Threaded€694.45
RFQ
DLF009M2-QT 1 1/2Engineered PlasticPlainNo175 psiKitFemale Threaded1 1/2"Female Threaded€1,319.39
RFQ
ELF009-QT-S 1/2Engineered PlasticPlainYes175 psiValve To AccessoryFemale Threaded1/2"Female Threaded€592.55
RFQ
FLF009M2-QT-S 1Engineered PlasticPlainYes12 BarValve To AccessoryFemale Threaded1"Female Threaded€688.39
RFQ
GLF009M2-QT 1 1/4Engineered PlasticPlainNo175 psiKitFemale Threaded1 1/4"Female Threaded€1,239.85
RFQ
HLF009M2-QT 2Engineered PlasticPlainNo12 BarValve To AccessoryFemale Threaded2"Female Threaded-
RFQ
ILF009M2-QT-S 1 1/2Engineered PlasticPlainYes12 BarValve To AccessoryFemale Threaded1 1/2"Female Threaded€1,434.49
RFQ
JLF009M2-PC-QT 1Stainless SteelPlainNo175 psiValve To AccessoryFemale Threaded1"Female Threaded€1,258.54
RFQ
GLF009M2-PC-QT 1 1/4Stainless SteelPlainNo175 psiValve To AccessoryFemale Threaded1 1/4"Female Threaded€1,973.47
RFQ
KLF009M2-PC-QT 2Stainless SteelPlainNo175 psiValve To AccessoryFemale Threaded2"Female Threaded€2,452.92
RFQ
LLF009M3-QT (W/PRESS) 3/4Stainless SteelPlainNo12.1 BarValve To AccessoryPress3/4"Press€664.45
RFQ
MLF009M2-LF 1Stainless SteelPlainNo175 psiValve To AccessoryFemale Threaded1"Female Threaded€1,061.84
RFQ
NLF009M3-LF 3/4Stainless SteelPlainNo12.1 BarValve To AccessoryFemale Threaded3/4"Female Threaded€912.44
RFQ
OLF009PC-QT 1/2Stainless SteelPlainNo12.1 BarValve To AccessoryFemale Threaded1/2"Female Threaded€978.30
RFQ
PLF009-LF 2 1/2Stainless SteelEpoxy CoatedNo12.1 BarValve To AccessoryFemale Threaded2 1/2"Female Threaded€5,121.88
RFQ
QLF009-DNRS 3Stainless SteelEpoxy CoatedNo12.1 BarValve To AccessoryFemale Threaded3"Female Threaded€7,660.88
RFQ
RLF009-DOSY 3Stainless SteelEpoxy CoatedNo12 BarValve To AccessoryFemale Threaded3"Female Threaded€8,545.51
RFQ
RLF009-DOSY 2 1/2Stainless SteelEpoxy CoatedNo12.1 BarValve To AccessoryFemale Threaded2 1/2"Female Threaded€7,324.94
RFQ
BLF009M3-QT-CT 3/4Stainless SteelPlainNo12.1 BarValve To AccessoryFemale Threaded3/4"Female Threaded€1,099.84
RFQ
QLF009M2-QT-CT 1Stainless SteelCopper Silicon Alloy PlatedNo12.1 BarValve To AccessoryFemale Threaded1"Female Threaded€1,299.89
RFQ
NLF009M2-LF 1 1/4Stainless SteelPlainNo12.1 BarValve To AccessoryFemale Threaded1 1/4"Female Threaded€1,689.85
RFQ
NLF009M2-LF-UL 2Stainless SteelPlainNo12.1 BarValve To AccessoryFemale Threaded2"Female Threaded€1,958.28
RFQ
NLF009M2-LF 1 1/2Stainless SteelPlainNo12.1 BarValve To AccessoryFemale Threaded1 1/2"Female Threaded€1,900.88
RFQ
WATTS -

Double Check Valve Backflow Preventer Assemblies

StyleModelSeat MaterialMin. Temp.Disc MaterialMax. Working PressureTypeInlet TypeBody FinishBody PatternPrice (ex. VAT)
A200-LBV 2Rubber33°FSilicone175 psiKitFlanged Joint--€998.57
RFQ
B870V-4-DC-LG-DIN-N&VStainless Steel32°FEPDM175 psiKitFlanged JointEpoxy CoatedN Pattern€3,744.35
RFQ
WATTS -

994 Series Reduced Pressure Zone Assemblies

StyleModelTypeInlet TypeOutlet SizeOutlet TypeSeat MaterialBody FinishStrainerMax. Working PressurePrice (ex. VAT)
A994-OSY 6KitFlanged Joint6"Flanged JointEngineered PlasticPlainNo175 psi€13,837.90
RFQ
A994-OSY 3KitFlanged Joint3"Flanged JointEngineered PlasticPlainNo175 psi€7,863.49
RFQ
A994-OSY 4KitFlanged Joint4"Flanged JointEngineered PlasticPlainNo175 psi€8,695.75
RFQ
A994-OSY 8KitFlanged Joint8"Flanged JointEngineered PlasticPlainNo175 psi€24,225.80
RFQ
A994-OSY 2 1/2KitFlanged Joint2 1/2"Flanged JointEngineered PlasticPlainNo175 psi€6,762.77
RFQ
B994-NRS 8Valve To AccessoryFlanged Joint8"Flanged JointEngineered PlasticPlainNo175 psi€22,801.76
RFQ
A994-DOSY 2 1/2Valve To AccessoryFlanged Joint2 1/2"Flanged JointEngineered PlasticPlainNo175 psi€7,237.16
RFQ
A994-DOSY 3Valve To AccessoryFlanged Joint3"Flanged JointEngineered PlasticPlainNo175 psi€8,413.81
RFQ
A994-DNRS 3Valve To AccessoryFlanged Joint3"Flanged JointEngineered PlasticPlainNo175 psi€7,144.32
RFQ
C994-LF 10Valve To AccessoryFlanged Joint10"-Engineered PlasticPlainNo175 psi€24,802.66
RFQ
A994-OSY 10Valve To AccessoryFlanged Joint10"Flanged JointEngineered PlasticPlainNo175 psi€33,014.53
RFQ
D994-LF 8Valve To AccessoryFlanged Joint8"-Engineered PlasticPlainNo175 psi€19,089.30
RFQ
E994-NRS 2 1/2Valve To AccessoryFlanged Joint2 1/2"Flanged JointEngineered PlasticPlainNo175 psi€6,327.26
RFQ
B994-NRS 6Valve To AccessoryFlanged Joint6"Flanged JointEngineered PlasticPlainNo175 psi€13,025.87
RFQ
C994-LF 6Valve To AccessoryFlanged Joint6"-Engineered PlasticPlainNo175 psi€10,784.00
RFQ
A994-OSY-GXG 8Valve To AccessoryGrooved Joint8"Grooved JointEngineered PlasticPlainNo175 psi€25,921.86
RFQ
A994-OSY-GXG 6Valve To AccessoryGrooved Joint6"Grooved JointEngineered PlasticPlainNo175 psi€14,806.91
RFQ
A994-OSY-GXG 4Valve To AccessoryGrooved Joint4"Grooved JointEngineered PlasticPlainNo175 psi€9,306.84
RFQ
A994-OSY-GXG 3Valve To AccessoryGrooved Joint3"Grooved JointEngineered PlasticPlainNo175 psi€8,413.81
RFQ
A994-OSY-GXG 2 1/2Valve To AccessoryGrooved Joint2 1/2"Grooved JointEngineered PlasticPlainNo175 psi€7,237.16
RFQ
B994-NRS 3Valve To AccessoryFlanged Joint3"Flanged JointEngineered PlasticPlainNo175 psi€7,144.32
RFQ
A994-DOSY 4Valve To AccessoryFlanged Joint4"Flanged JointEngineered PlasticPlainNo175 psi€9,306.84
RFQ
WATTS -

009 Series Reduced Pressure Zone Assemblies

StyleModelSeat MaterialValve TypeStrainerMax. Working PressureTypeInlet TypeOutlet SizeFittingPrice (ex. VAT)
A009-M1-QTS--------€852.11
B009-QT-SC 1/2--------€1,022.19
RFQ
C009M2-QT HC 2Engineered PlasticQuarter Turn Ball ValveNo12.1 BarValve To AccessoryFemale Threaded2 1/2"No€2,402.27
RFQ
D009M2-QT 2Engineered PlasticQuarter Turn Ball ValveNo175 psiKitFemale Threaded2"No€1,205.40
RFQ
EU009M2-PC-QT 2Stainless SteelQuarter Turn Ball ValveNo175 psiKitUnion Joint2"No€2,272.25
RFQ
D009M2-PC-QT 1 1/2Stainless SteelQuarter Turn Ball ValveNo175 psiKitFemale Threaded1 1/2"No€1,705.04
RFQ
FU009M2-A-PC-QT 2Stainless SteelQuarter Turn Ball ValveNo175 psiKitUnion Joint2"Yes€2,513.67
RFQ
D009M2-QT-SH 1 1/2Stainless SteelQuarter Turn Ball ValveNo175 psiKitFemale Threaded1 1/2"No€1,578.42
RFQ
G009M3-LF 3/4Stainless SteelNo Shutoff ValveNo12.1 BarValve To AccessoryFemale Threaded3/4"No€730.14
RFQ
H009M2-LF 1 1/4Stainless SteelNo Shutoff ValveNo175 psiKitFemale Threaded1 1/4"No€1,351.37
RFQ
IU009M2-QT-S 1 1/2Stainless SteelQuarter Turn Ball ValveYes175 psiKitUnion Joint1 1/2"No€2,005.52
RFQ
JU009M2-QT 1 1/2Stainless SteelQuarter Turn Ball ValveNo175 psiKitUnion Joint1 1/2"No€1,696.61
RFQ
JU009M2-QT 1 1/4Stainless SteelQuarter Turn Ball ValveNo175 psiKitUnion Joint1 1/4"No€1,532.83
RFQ
KU009M2-QT-S-SH 2Stainless SteelQuarter Turn Ball ValveYes175 psiKitUnion Joint2"No€2,728.07
RFQ
LU009M2-QT-S-SH 1 1/2Stainless SteelQuarter Turn Ball ValveYes175 psiKitUnion Joint1 1/2"No€2,213.19
RFQ
BU009M2-QT-S-SH 3/4Stainless SteelQuarter Turn Ball ValveYes12 BarValve To AccessoryUnion Joint3/4"No€1,077.06
RFQ
MU009M2-QT-S-SH 1 1/4Stainless SteelQuarter Turn Ball ValveYes175 psiKitUnion Joint1 1/4"No€1,970.09
RFQ
N009M2-QT-CT 1Stainless SteelQuarter Turn Ball ValveNo175 psiKitFemale Threaded1"No€1,039.92
RFQ
O009-QT-CT 1/2Stainless SteelQuarter Turn Ball ValveNo175 psiKitFemale Threaded1/2"No€662.58
RFQ
P009M2-LF 1Stainless SteelNo Shutoff ValveNo175 psiKitFemale Threaded1"No€850.82
RFQ
D009M2-PC-QT 1Stainless SteelQuarter Turn Ball ValveNo175 psiKitFemale Threaded1"No€1,006.98
RFQ
QU009M2-QT-S 2Stainless SteelQuarter Turn Ball ValveYes175 psiKitUnion Joint2"No€2,466.40
RFQ
EU009M2-QT 2Stainless SteelQuarter Turn Ball ValveNo175 psiKitUnion Joint2"No€2,030.85
RFQ
B009M2-QT-BC 1Stainless SteelQuarter Turn Ball ValveNo12.1 BarValve To AccessoryFemale Threaded1"No€1,039.92
RFQ
B009M3-QT-BC 3/4Stainless SteelQuarter Turn Ball ValveNo12.1 BarValve To AccessoryFemale Threaded3/4"No€880.36
RFQ
WATTS -

719 Series Double Check Valve Assemblies

Watts 719 Series double check valve assemblies are used in plumbing systems to prevent the backflow of water and protect the potable water supply from contamination. These backflow preventers feature bronze alloy construction for structural rigidity and corrosion resistance. They are further coupled with elastomers that resist the effects of chloramine. These backflow preventers have a separate access and a top-entry check valve arrangement that facilitates convenient maintenance procedures. They have a maximum working pressure of 175 psi (12.06 bar).

StyleModelValve TypeMax. Working PressureInlet TypeOutlet TypeStrainerOutlet SizeFittingInlet Thread TypePrice (ex. VAT)
A719-LF 1/2-175 psiFemale ThreadedFemale Threaded---FPT€467.64
RFQ
AU719-QT-S 2-175 psiUnion JointUnion Joint---NPT€1,931.25
RFQ
A719-LF 3/4-175 psiFemale ThreadedFemale Threaded---FPT€509.83
RFQ
A719-QT-LH 1-175 psiFemale ThreadedFemale Threaded----€631.39
RFQ
A719-LF 1 1/4No Shutoff Valve12.1 BarFemale ThreadedFemale ThreadedNo1 1/4"No-€795.98
RFQ
B719QTS 2Quarter Turn Ball Valve12.1 BarFemale ThreadedFemale ThreadedYes2"No-€1,621.48
RFQ
A719QT-S-R10 1/2Quarter Turn Ball Valve12.1 BarFemale ThreadedFemale ThreadedNo1/2"No-€744.47
RFQ
A719QT-S-R10 3/4Quarter Turn Ball Valve12.1 BarFemale ThreadedFemale ThreadedNo3/4"No-€744.47
RFQ
B719-AQT-R10 3/4Quarter Turn Ball Valve12.1 BarFemale ThreadedFemale ThreadedNo3/4"Yes-€924.25
RFQ
StyleModelSeat MaterialMax. Working PressureMin. Temp.TypeInlet TypeOutlet TypeInlet Thread TypeBody PatternPrice (ex. VAT)
AD4000B 2-175 psi33°FKitFemale ThreadedFemale ThreadedNPT-€1,782.69
RFQ
A4000BM3-LH 3/4Polymer175 psi33°FKitFemale ThreadedFemale ThreadedNPTStraight€880.36
RFQ
StyleModelMeter TypeSeat MaterialBody PatternMax. Working PressureMin. Temp.TypeInlet TypeOutlet TypePrice (ex. VAT)
AC500N-OSY-LM 8-RubberN Pattern175 psi33°FKitFlanged JointFlanged Joint€21,809.93
RFQ
AC500N-DOSY-C 4CFMRubberN Pattern175 psi33°FKitFlanged JointFlanged Joint€9,619.16
RFQ
AC500N-DOSY-C 8CFMRubberN Pattern175 psi33°FKitFlanged JointFlanged Joint€21,933.91
RFQ
AC500N-DOSY-G 8GPMRubberN Pattern175 psi33°FKitFlanged JointFlanged Joint€21,933.91
RFQ
WATTS -

LF709 Series Double Check Valve Assemblies

StyleModelValve TypeMax. Working PressureStrainerOutlet SizeSeat MaterialBody FinishMin. Temp.TypePrice (ex. VAT)
ALF709-QT-FDA 6-175 psi--Stainless SteelEpoxy Coated33°FKit€16,545.71
RFQ
ALF709-QT-S-FDA 2 1/2-175 psi--Stainless SteelEpoxy Coated33°FKit€9,473.98
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ALF709-QT-FDA 2 1/2-175 psi--Stainless SteelEpoxy Coated33°FKit€8,604.56
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BLF709-DNRS 3Non Rising Stem Gate Valve175 psiNo3"Stainless SteelEpoxy Coated33°FKit€7,382.35
RFQ
BLF709-DNRS 8Non Rising Stem Gate Valve175 psiNo8"Stainless SteelEpoxy Coated33°FKit€29,462.95
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CLF709-NRS-S-FDA 10Non Rising Stem Gate Valve12.1 BarYes10"Stainless SteelEpoxy Coated33°FKit€41,703.64
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CLF709-NRS-S-FDA 6Non Rising Stem Gate Valve12.1 BarYes6"Stainless SteelEpoxy Coated33°FKit€15,179.98
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CLF709-NRS-S-FDA 4Non Rising Stem Gate Valve12.1 BarYes4"Stainless SteelEpoxy Coated33°FKit€9,268.01
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BLF709-NRS 8Non Rising Stem Gate Valve175 psiNo8"Stainless SteelEpoxy Coated33°FKit€27,533.61
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BLF709-NRS 10Non Rising Stem Gate Valve175 psiNo10"Stainless SteelEpoxy Coated33°FKit€35,559.09
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DLF709-NRS 2 1/2Non Rising Stem Gate Valve12.1 BarNo2 1/2"Stainless SteelEpoxy Coated33°FKit€6,725.63
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BLF709-DNRS 10Non Rising Stem Gate Valve175 psiNo10"Stainless SteelEpoxy Coated33°FKit€38,049.04
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BLF709-DNRS 4Non Rising Stem Gate Valve175 psiNo4"Stainless SteelEpoxy Coated33°FKit€7,834.77
RFQ
ELF709-NRS 4Non Rising Stem Gate Valve12.1 BarNo4"Stainless SteelEpoxy Coated33°FKit€7,834.77
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ALF709-NRS-S 2 1/2Non Rising Stem Gate Valve175 psiYes2 1/2"Stainless SteelEpoxy Coated33°FKit€8,128.52
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ALF709-DNRS 2 1/2Non Rising Stem Gate Valve12.1 BarNo2 1/2"Stainless SteelEpoxy Coated33°FKit€7,196.62
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BLF709-DNRS 6Non Rising Stem Gate Valve175 psiNo6"Stainless SteelEpoxy Coated33°FKit€13,831.15
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CLF709-QT-S-FDA 4Quarter Turn Ball Valve175 psiYes4"Stainless SteelEpoxy Coated33°FKit€11,457.55
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CLF709-QT-FDA 4Quarter Turn Ball Valve175 psiNo4"Stainless SteelEpoxy Coated33°FKit€10,024.31
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CLF709-QT-FDA 3Quarter Turn Ball Valve175 psiNo3"Stainless SteelEpoxy Coated33°FKit€9,448.68
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CLF709-QT-FDA 8Quarter Turn Ball Valve12.1 BarNo8"Stainless SteelEpoxy Coated33°FKit€35,245.91
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CLF709-QT-S-FDA 3Quarter Turn Ball Valve175 psiYes3"Stainless SteelEpoxy Coated33°FKit€10,368.69
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CLF709-QT-S-FDA 8Quarter Turn Ball Valve175 psiYes8"Stainless SteelEpoxy Coated33°FKit€38,521.47
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Features

  • Watts backflow preventers feature a compact, modular design for installation in tight spaces.
  • Their single-cover, top-entry facility permits easy access for maintenance purposes.
  • They are capable of bearing up to 180 psi pressures and have a maximum operating temperature of 180 degrees F.
  • They come equipped with replaceable seats and seat discs. They do not require any special tools for servicing.

Frequently Asked Questions

How does backflow occur?

Backflow is generated by cross-connections that have the possibility of permitting pollutants into the drinking water system. Back siphonage can happen when the pressure in a tank is less than the water system's pressure.

Can check valves prevent backflow?

Check valves offer a basic form of backflow prevention, stopping water from flowing in the wrong direction.

Are dual check valves the same as backflow preventers?

Double-check valves (also known as double-check assembly) are somewhere in between a check valve and a backflow preventer. They are usually installed in places where backflow requires to be contained with a one-way valve, but the investment needs to be less than a backflow preventer.

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