The RainDrainTM automatically removes rainfall and water collected in any secondary containment berm through gravity drainage while retaining hydrocarbons and contaminants inside the berm.

Using gravity to filter the hydrocarbons out of rainwater, the RainDrain allows operators to safely drain overflow from their berms (berms need to remain empty to have the capacity to contain any spills). Featuring an efficient sleek design and smart engineering, our new and improved RainDrain costs less and delivers more.


With its automatic shut-off “emergency stop valve” in the event of a massive spill, RainDrain is an essential addition for berms or any other area prone to oil and hydrocarbon spills.


  • Filtration elements stop all target contaminants, acting as a hydrocarbon selective unit
  • Easy installation within minutes
  • Ball valve with sight glass to monitor liquid levels and content
  • Flow capacity: 2.25USG per minute (8.5 LPM)
  • Hydro-carbon capacity: 1.5 gallons (slow flow) to two gallon (shutoff)
  • Housing: extruded aluminum tubing (36″ in length)
  • Discharge end – neoprene molded cap with 3/8″ discharge port
  • Feed end – neoprene molded with 3/4″ camlock inlet
  • Components include: filter casing, spare filter media, 8′ chemical hose with camlock fittings, one bulkhead fitting for the berm, ball valve with hose, sightglass and camlock fitting

 Available as:

Part #014654 – 36″ RainDrain, capacity 2 USG, 6″ dia x 36″ L, 23 lbs
Part #014416 – RainDrain Replacement Filter, 6″ dia x 36″ L, 19 lbs