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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 > Environmental > Oil / Water Separators

Oil / Water Separators 

Note:  Pay careful attention to the "Installation Instructions" and "Recommended Cleanout and Maintenance Procedures".

Oldcastle Precast Oil/Water Separators offer environmental protection from surface water pollution meeting the needs of a wide variety of run-off applications.

Features:

  • high performance removal of fugitive oil from storm and wash-down water
  • interception capacity for accidental surface releases
  • enhanced pre-treatment for biological and physio-chemical purification systems
  • precision-formed, high quality reinforced concrete retention structure

Oldcastle Precast produces two styles of separators in a number of sizes:

1.  Coalescing Media style separators (CPS) – these are high-performance separators that are designed to separate the oil by gravity, but use coalescing media to improve the efficiency of the separator; the media are able to pick up the smaller droplets of oil providing a cleaner effluent.

 CPS
Catalog No.
Projected
Coalescing
Plate Area
Sq.Ft.
 *Std.
Design
Flow Rate
 Max
Process
Flow Rate
 253-CPS 111 27 144
 264-CPS 196 47 251
 660-CPS 444 105 565
 576-CPS 592 140 754
5106-2-CPS 1,184 280 754
 612-2-CPS 1,776 420 1,130
 816-1-CPS 1,184  280 1,508
 816-2-CPS 2,368 560 1,508
 816-3-CPS 3,552 840 1,508

  *Basic design information per WSDE; user to adjust estimates for variations in real conditions

2.  API (American Petroleum Institute) style separators (SA) – these separators are designed to separate the oil and water by gravity; their efficiency is a function of the size of the vault, flow rate, and retention time.

SA
Catalog No.
Max.
Volume
(gallons)
Flow Rate
15 min. Retention
Time (gpm)
Max
Volume for
Spill Trap (gallons)
253-SA-125 125 8 50
660-SA-550 550 37 250
576-SA-1000 1,000 67 500
5106-SA-1750 1,750 117 875
612-SA-3000 3,000 200 1,500
816-SA-5000 5,000 333 2,500

We recommend using one or more of the following in combination with an oil/water separator for best results:

  • high flow bypass vault
  • sediment trap vault
  • sampling vault
  • oil trap vault
Images Product Name Materials Docs
Chart - Oil/Water Separator CPS (Coalescing Plate Style) & SA (API Gravity Style) Sizing Chart pdf
Installation Instructions CPS & SA Installation Instructions pdf
Cleanout & Maintenance - CPS Style Gravity Separator Recommended Cleanout & Maintenance Procedures-Coalescing Media Style (CPS) pdf
Cleanout & Maintenance - SA Style Gravity Separator Recommended Cleanout & Maintenance Procedures-API Style (SA) pdf
Coalescing Media - 253-CPS 27 GPM Design Flow Rate Concrete pdf dwg
Coalescing Media - 264-CPS 47 GPM Design Flow Rate Concrete pdf dwg
Coalescing Media - 660-CPS 105 GPM Design Flow Rate Concrete pdf dwg
Coalescing Media - 576-CPS 140 GPM Design Flow Rate Concrete pdf dwg
Coalescing Media - 5106-2-CPS 280 GPM Design Flow Rate Concrete pdf dwg
Coalescing Media - 612-2-CPS 420 GPM Design Flow Rate Concrete pdf dwg
Coalescing Media - 816-1-CPS 280 GPM Design Flow Rate Concrete pdf dwg
Coalescing Media - 816-2-CPS 560 GPM Design Flow Rate Concrete pdf dwg
Coalescing Media - 816-3-CPS 840 GPM Design Flow Rate Concrete pdf dwg
Gravity API Style - 253-SA-125 125 Gallon Max. Volume Concrete pdf dwg
Gravity API Style - 660-SA-550 550 Gallon Max. Volume Concrete pdf dwg
Gravity API Style - 576-SA-1000 1,000 Gallon Max. Volume Concrete pdf dwg
Gravity API Style - 5106-SA-1750 1,750 Gallon Max. Volume Concrete pdf dwg
Gravity API Style - 612-SA-3000 3,000 Gallon Max. Volume Concrete pdf dwg
Gravity API Style - 816-SA-5000 5,000 Gallon Max. Volume Concrete pdf dwg
Vault-High Flow Bypass Manhole Manhole Placed Upstream to By-Pass Separator During High Flows Concrete pdf dwg
Vault-Oil Trap Vault Placed Upstream of Separator to Remove Oil & Improve Efficiency Concrete pdf dwg
Vault-Sampling Vault Placed Downstream of Separator for Sampling Effluent Concrete pdf dwg
Vault-Sediment Trap Vault Placed Upstream of Separator to Remove Sediment & Improve Efficiency Concrete pdf dwg

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