Stop oil, sediment, and other debris from entering curb inlets and catch basins
The two openings of a combination street drain—the curb inlet and the street grate—have been a challenge when it comes to creating stormwater management products that protect both openings from pollutants. The Ultra-Drain Guard Curb-Insert Model tackles this challenge head-on.
The system starts with our standard Ultra-Drain Guard and adds additional fabric and a heavy-duty tension rod that keeps the fabric in place to filter pollutants from water flowing into the curb inlet. The standard Ultra-Drain Guard inserted into the catch basin handles the rest.
The “Plus” version of the Ultra-Drain Guard Curb Insert Model further protects the two inlets by using our own Ultra-Filter-Tex material in place of the standard model’s fabric. Both versions filter oil and sediment, but the Ultra-Filter-Tex model captures more oil or other hydrocarbons.
- For use with combination catch basins with a street grate and curb opening.
- Heavy-duty tension rod secures Ultra-Drain Guard inside curb inlet — stopping sediment and other contaminants from entering curb portion of the storm drain.
- Fits grate sizes up to 40” x 40” and curb inlets up to 60” wide.
|Part #||Model||Dimensions in. (mm)||Containment Capacity gal. (L)||Weight Capacity UDL lbs. (kg)||Weight lbs. (kg)|
|9230||Oil & Sediment, Curb-Insert Model||For Curb Inlets 24-42 (610-1067)||Up to .87 gallons (3.5 L) of Oil||Up to 40 lbs. (18 kg) of Sediment||2 (.9)|
|9231||Oil & Sediment, Curb-Insert Model||For Curb Inlets 42-60 (1067-1524)||Up to .87 gallons (3.5 L) of Oil||Up to 40 lbs. (18 kg) of Sediment||3 (1.4)|
|9239||Oil & Sediment Plus, Curb-Insert Model||For Curb Inlets 24-42 (610-1067)||Up to 1.38 gal (5 L) of Oil||Up to 40 lbs. (18 kg) of Sediment||3 (1.4)|
|9240||Oil & Sediment Plus, Curb-Insert Model||For Curb Inlets 42-60 (1067-1524)||Up to 1.38 gal (5 L) of Oil||Up to 40 lbs. (18 kg) of Sediment||4 (1.8)|
Frequently Asked Questions
How long will a Ultra-Drain Guard last?
It is difficult to arrive at a definitive answer for this as there are several factors that will determine how long an Ultra-Drain Guard will last after it has been installed. The amount of rainfall and the amount and type of pollutants that the unit will be exposed to, among other things will determine the Ultra-Drain Guard’s life expectancy. For this reason, we recommend inspecting the unit after each significant rain event to better understand how much each Ultra-Drain Guard will capture. We have had test units in Seattle as well as Florida that were still working effectively after more than a year after installation.
Do I have to take the grate out of the storm drain to install an Ultra-Drain Guard?
Yes. While we do have some stormwater products that do not require the grate to be lifted, the Ultra-Drain Guard, Curb-Insert Style does require that you first lift the grate.
What do I do with the Ultra-Drain Guard when I'm done with it?
If the unit has only been used to remove dirt, sand, and sediment from the incoming stormwater flow, it can be disposed of like any other trash/waste. If oil/grease or any other hydrocarbons have been absorbed by the geotextile material, it must be disposed of in accordance with local regulations and requirements.
How much water can the Ultra-Drain Guard handle?
When new, the Ultra-Drain Guard has a flow rate of 90 gpm/ft2. However, the unit has been designed with overflow ports. These allow the Ultra-Drain Guard a flow rate of 770 gpm which will prevent any flooding or ponding during extreme rain events. Any water that goes through the overflow is essentially untreated.
Does this product work with synthetic oils?
While the needle-punched geotextile material used, can absorb synthetic oils, the Ultra-Filter-Tex material is designed for the absorption of hydrocarbons and will not absorb synthetics.
Can the Ultra-Drain Guard be reused?
Yes, under most circumstances. If the Ultra-Drain Guard is filled with sand, silt, and sediment, it can be removed from the drain, emptied out and replaced. Trash and debris can also be removed. The exception is if the Ultra-Drain Guard is saturated with oil, gas or other hydrocarbons. Because these pollutants can be flushed out of the Ultra-Drain Guard by a major rain event, it is recommended that the units be replaced instead of reused.
Why do you use Ultra-Filter-Tex for this product?
Ultra-Filter-Tex (used only in the “Plus” Models) removes oil and other hydrocarbons much faster than traditional absorbents. A polypropylene sorbent material will not allow water to freely pass through it. Oil will absorb at the surface of a polypropylene absorbent, and the polypropylene will eventually blind over and the center will not absorb any oil.
Is hardware included?
Yes, you will receive everything you need including the hardware (tension rods). No other parts, pieces or components will be necessary to install/use your Ultra-Drain Guard.
What other products could be used instead of the Ultra-Drain Guard?
An Ultra-Inlet Guard (Curb-Style) would be a good option to the Ultra-Drain Guard, Curb-Insert Style. The main difference being the installation process (the Ultra-Inlet Guard lays on top of the drain and is held in place with heavy-duty magnets). You can also check out the Path to the Perfect Product to see what other products might be a good option.
Helps Comply with These Rules & Regulations
- Stormwater Management Regulation 40 CFR 122.26
- National Pollutant Discharge Elimination System (NPDES)
- Total Maximum Daily Load (TMDL)
Additional Product Information
Uniform Product Codes (UPCs)
- UPC 808416092301 Ultra-Drain Guard Oil & Sediment, Curb-Insert Model (Part #9230)
- UPC 808416092318 Ultra-Drain Guard Oil & Sediment, Curb-Insert Model (Part #9231)
- UPC 808416092394 Ultra-Drain Guard Plus Oil & Sediment Plus, Curb-Insert Model (Part #9239)
- UPC 808416092400 Ultra-Drain Guard Plus Oil & Sediment Plus, Curb-Insert Model (Part #9240)