Double Check (DC) Backflow Preventer Valve Assemblies

Double Check Backflow Preventer Valves are designed to prevent contamination of the potable water supply due to back-siphonage or backpressure from substances that are objectionable to the potable water supply, but non-health hazards.

These double check valve assemblies are designed, cast, machined, assembled and tested in the USA.
5 year warranty
Low pressure loss
Lead-free option

34 products

Apollo® Model DCLF4A Lead Free Double Check

Apollo™ 1/2" Backflow Preventer, Double Check, Lead-Free Bronze with Ball Valves and SAE Test Cocks APOLLO 4ALF103A2F

SKU: 00-4ALF103A2F

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$306.81

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Apollo™ 3/4" Backflow Preventer, Double Check, Lead-Free Bronze with Ball Valves and SAE Test Cocks APOLLO 4ALF104A2F

SKU: 00-4ALF104A2F

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$348.15

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Apollo™ 1-1/2" Backflow Preventer, Double Check, Lead-Free Bronze with Ball Valves and SAE Test Cocks APOLLO 4ALF107A2F

SKU: 00-4ALF107A2F

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$868.22

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Apollo™ 1-1/4" Backflow Preventer, Double Check, Lead-Free Bronze with Ball Valves and SAE Test Cocks APOLLO 4ALF106A2F

SKU: 00-4ALF106A2F

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$736.45

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Apollo™ 1" Backflow Preventer, Double Check, Lead-Free Bronze with Ball Valves and SAE Test Cocks APOLLO 4ALF105A2F

SKU: 00-4ALF105A2F

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$415.08

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Apollo™ 2-1/2" Backflow Preventer, Double Check, Lead-Free , Stainless Steel Body with Flanged NRS Gate Valves APOLLO 4ALF10902

SKU: 00-4ALF10902

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$3,816.76

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Apollo™ 2-1/2" Backflow Preventer, Double Check, Lead-Free , Stainless Steel Body with Flanged OS&Y Gate Valves APOLLO 4ALF10903

SKU: 00-4ALF10903

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$3,816.76

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Apollo® Model DCLF 4A Lead Free* Double Check Valve. Backflow Preventer, with Butterfly Valves Grooved Connections

Apollo™ 2-1/2" Backflow Preventer, Double Check, Lead-Free , Stainless Steel Body with Butterfly Valves Grooved Connections APOLLO 4ALF10909

SKU: 00-4ALF10909

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$4,178.38

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Apollo™ 3" Backflow Preventer, Double Check, Lead-Free , Stainless Steel Body with Flanged NRS Gate Valves APOLLO 4ALF10002

SKU: 00-4ALF10002

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$4,017.66

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Apollo™ 3" Backflow Preventer, Double Check, Lead-Free , Stainless Steel Body with Butterfly Valves Grooved Connections APOLLO 4ALF10009

SKU: 00-4ALF10009

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$4,660.49

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Apollo™ 3" Backflow Preventer, Double Check, Lead-Free , Stainless Steel Body with Flanged OS&Y Gate Valves APOLLO 4ALF10003

SKU: 00-4ALF10003

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$4,017.66

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Apollo™ 2" Backflow Preventer, Double Check, Lead-Free Bronze with Ball Valves and SAE Test Cocks APOLLO 4ALF108A2F

SKU: 00-4ALF108A2F

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$1,097.96

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Apollo™ 4" Backflow Preventer, Double Check, Lead-Free , Stainless Steel Body with Flanged NRS Gate Valves APOLLO 4ALF10A02

SKU: 00-4ALF10A02

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$4,981.91

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Apollo™ 4" Backflow Preventer, Double Check, Lead-Free , Stainless Steel Body with Flanged OS&Y Gate Valves APOLLO 4ALF10A03

SKU: 00-4ALF10A03

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$4,981.91

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Apollo™ 4" Backflow Preventer, Double Check, Lead-Free , Stainless Steel Body with Butterfly Valves Grooved Connections APOLLO 4ALF10A09

SKU: 00-4ALF10A09

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$5,222.96

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Apollo™ 6" Backflow Preventer, Double Check, Lead-Free , Stainless Steel Body with Butterfly Valves Grooved Connections APOLLO 4ALF10C09

SKU: 00-4ALF10C09

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$7,553.21

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Apollo™ 6" Backflow Preventer, Double Check, Lead-Free , Stainless Steel Body with Flanged OS&Y Gate Valves APOLLO 4ALF10C03

SKU: 00-4ALF10C03

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$7,231.79

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Apollo™ 6" Backflow Preventer, Double Check, Lead-Free , Stainless Steel Body with Flanged NRS Gate Valves APOLLO 4ALF10C02

SKU: 00-4ALF10C02

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$7,231.79

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Apollo™ 8" Backflow Preventer, Double Check, Lead-Free , Stainless Steel Body with Flanged OS&Y Gate Valves APOLLO 4ALF10E03

SKU: 00-4ALF10E03

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$13,660.05

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Apollo™ 10" Backflow Preventer, Double Check, Lead-Free with Flanged NRS Gate Valves APOLLO 4ALF10G02

SKU: 00-4ALF10G02

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$21,293.61

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Apollo™ 10" Backflow Preventer, Double Check, Lead-Free with Butterfly Valves Grooved Connections APOLLO 4ALF10G09

SKU: 00-4ALF10G09

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$21,695.38

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Apollo™ 12" Backflow Preventer, Double Check, Lead-Free with Flanged NRS Gate Valves APOLLO 4ALF10H02

SKU: 00-4ALF10H02

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$32,543.05

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Apollo™ 12" Backflow Preventer, Double Check, Lead-Free with Butterfly Valves Grooved Connections APOLLO 4ALF10H09

SKU: 00-4ALF10H09

In Stock

$0.00

In Stock

Apollo™ 8" Backflow Preventer, Double Check, Lead-Free , Stainless Steel Body with Flanged NRS Gate Valves APOLLO 4ALF10E02

SKU: 00-4ALF10E02

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$13,660.05

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