Why shop with us?
The UltraTech 9874 is the mid-range recessed frame configuration of the Ultra-HydroKleen catch basin filter, custom-fitted for catch basins with drain openings between 26" and 33" in diameter. Designed for drains in known high-contaminant "hot spot" locations, the recessed frame seats flush within the catch basin ledge so the unit sits below grade, keeping it fully protected from traffic and above-grade interference while maintaining complete filtration performance. As a patented true filter verified by the EPA's ETV program, it forces stormwater through up to three separate filter chambers before discharge — removing hydrocarbons, heavy metals, sediments, phosphorous, nitrogen, and other organics from stormwater and industrial runoff.
- Recessed Frame for Mid-Range Catch Basins – Custom-fitted recessed frame seats flush within the catch basin ledge for drain openings between 26" and 33" (660 mm – 838 mm); available for round or square grate configurations with custom sizes available upon request
- True Multi-Stage Filtration – Patented separate-chamber design forces water through up to three different filter media bags before discharge, exceeding 80% sediment removal efficiency and targeting hydrocarbons, heavy metals, phosphorous, and other organics simultaneously
- Mix-and-Match Media Compatibility – Supports Sorb-44 (Part #9462), Activated Carbon (Part #9463), PhosFilter (Part #9461), and Heavy Metal Media (Part #9460); filter media bags are sold separately and must be ordered based on site-specific pollutant profile
- High-Flow Bypass System – Integrated bypass prevents ponding or flooding during high-flow storm events, maintaining full drainage function even when filter media approaches capacity
- Optional Sampling Capability – Compatible with the sampling option (Part #9876), which must be ordered with the unit at time of purchase and cannot be retrofitted; works with the Ultra-Universal Sampler (Part #8247, sold separately) for post-treatment effluent monitoring
Product Specifications:
| Model Number | 9874 |
| Product Type | Ultra-HydroKleen – 26" to 33" Recessed Frame |
| Frame Type | Recessed Frame – Sits Flush Within Catch Basin Ledge |
| Fits Drain Openings | 26" – 33" (660 mm – 838 mm) |
| HydroKleen Body Dimensions | 15" L x 19" W x 19" Deep |
| Flow Rate with Overflow | 135 ft³/min (1,000 gpm) |
| Sediment Removal Efficiency | Exceeds 80% |
| Media Capacity | 2–3 Media Filter Bags (Based on Catch Basin Size) |
| Filter Media | Sold Separately – Part #9462 / #9463 / #9461 / #9460 |
| Grate Compatibility | Round or Square Catch Basin Grates – Custom Sizes Available |
| Bypass System | Yes – Prevents Flooding or Ponding During High-Flow Storm Events |
| Sampling Option | Available – Part #9876 (Must Be Ordered with Unit – Not Retrofittable) |
| Color | Green |
| Recommended Maintenance | Filter Media Replacement Every 6 Months (Varies by Pollutant Load) |
| Compliance | Supports NPDES 40 CFR 122.26 / EPA BMP / TMDL Requirements / EPA ETV Verified |
| UPC | 808416098747 |
| Country of Origin | USA |
| Brand | UltraTech International |