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Oldcastle Precast, Inc.
28499 SW Boberg Rd
Wilsonville OR, 97070-0323
Phone: (503) 682-2844
Fax: (503) 682-2657
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Skip Navigation LinksHome > Products > Water > Backflow Device Vaults

Backflow Device Vaults 

Oldcastle Precast backflow device vaults meet the requirements of all state and local municipalities. We can provide installed backflow devices for both fire service and domestic water applications. The guide below will assist you in sizing the correct vault.

 Valve Size  With FDC  Without FDC
   Catalog No.  Catalog No.
 4"  577 / 676  577 / 676
 6"  676 / 687  676 / 776
 8"  687 / 5106  676 / 687
 10"  687 / 5106  687

Vaults can be equipped to meet your specifications to include:

  • installed double check or double check detector valve
  • access doors
  • ladder & extension
  • pipe or link seals
  • sealer/coating

Send us completed Backflow Device Configuration sheet and we will provide you will a submittal drawing.


Images Product Name Materials Docs
Backflow Device Vault Sizing Chart Double Check/Double Check Detector Valve Vault Sizing Chart pdf dwg
Access Door Selection How to Determine Type of Access Door pdf
660-WA-TVWD TVWD Spec for 3" DCV / DCDV pdf dwg
577-WA-TVWD TVWD Spec for 4" DCV / DCDV pdf dwg
676-WA-TVWD TVWD Spec for 6" DCV / DCDV pdf dwg
687-WA-TVWD TVWD Spec for 8" DCV / DCDV pdf dwg
5106-WA-TVWD TVWD Spec for 10" DCV / DCDV pdf dwg

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