Oil & Water Separators

The Oil and Water Separator’s function is to separate clear water in oil/water runoff from carwashes, mechanic shops, gas stations, etc. The separator uses gravitational force and the varying densities of oil and water to remove oil from drainage. In some applications, oil and water separators are used in series with grit traps and reclaim tanks to reclaim water for carwashes and similar systems.


CONCRETE: Class 1 concrete with design strength of 4500 PSI at 28 days.  Unit is of monolithic construction at floor and first stage of wall.  Baffle is slide-in type.
REINFORCEMENT Grade 60 reinforced with steel rebar conforming to ASTM A615 on required centers.
CASTINGS Cast iron manhole ring and cover shall be nominal 24” and shall be traffic duty.


  • Concrete Grade Rings (4″ and 6″ standard)
  • Steel Riser Rings (1/2″ increments up to 5″)
  • Delivery and set in prepared excavation with state-of-the-art crane-truck (location dependent)
  • Locally specified and custom structures available

Standard Drawings Available

Traffic-Rated Non-Traffic
125 Gallon Oil & Water Separator PDF
150 Gallon Oil & Water Separator PDF
300 Gallon Oil & Water Separator PDF
500 Gallon Oil & Water Separator PDF PDF
750 Gallon Oil & Water Separator PDF PDF
1000 Gallon Oil & Water Separator PDF PDF
1200 Gallon Oil & Water Separator PDF
1500 Gallon Oil & Water Separator PDF
2000 Gallon Oil & Water Separator PDF
2500 Gallon Grease Trap PDF

Looking for a CAD drawing? Click here.

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