Roth Retention Tank 3500L, 100% Retention

Roth Retention Tank – reliable rainwater storage 3,500–10,000 L The Roth Retention Tank is a robust polyethylene (PE) rainwater storage tank designed for commercial use in industry, construction, trade and agriculture. Available in 3,500, 5,000, 6,000, 7,000 and 10,000 liter sizes, the tank can be configured for either 50% or 100% retention, making it ideal for flow control, rainwater reuse and reducing load on the sewer system. Benefits for your business ✅ - ✅ Clear retention control: selectable 50% or 100% retention to match your rainwater strategy - ✅ Durable material: corrosion-free, UV-stable polyethylene (PE) for long service life - ✅ Easy integration: standard DN 100 connections, overflow siphon with small-animal guard and integrated filter basket - ✅ Space-saving design: compact dimensions; available as single or double units for larger volumes - ✅ Optional traffic-rated cover: vehicle-loadable shaft cover available for trafficked areas - ✅ Flexible flow control: retention flow restrictor standard 1", other sizes on request Technical features ⚙️ - Material: high-quality polyethylene (PE) - System: Twinbloc® base tank with integrated filter basket (1 mm mesh in the garden filter package) - Outflow control: floating flow restrictor 1" (flow 0.07–0.5 l/s); 2" or 3" available on request - Connections: inlet DN 100 at dome shaft, overflow siphon DN 100 with small-animal guard, conduit (empty pipe) connection DN 100 - Shaft: DN 600 including cover; pedestrian-rated plastic cover standard - Load rating: vehicle-loadable with optional Roth vehicle-rated shaft cover - Customization: retention volume (50% / 100%) and restrictor sizes configurable per project Equipment & accessories ✅ - ✅ Twinbloc® base tank with integrated filter basket - ✅ Pedestrian-rated plastic cover and DN 600 shaft with lid - ✅ Roth garden filter upgrade kit: filter basket + connection accessories (1 mm mesh) - ✅ Retention flow restrictor (standard 1", alternatives 2" or 3") for defined outflow control - ✅ Optional: vehicle-loadable shaft cover Technical overview – model variants - RT 3500 - Total volume: 3,500 L - 50% retention (usable/retention volume): 1,750 L - 100% retention: 3,500 L - Weight: 145 kg - Dimensions (L × W × H): 2,350 × 2,300 × 975 mm - Max. height with shaft: max. 1,650 mm - RT 5000 - Total volume: 5,000 L - 50% retention: 2,500 L - 100% retention: 5,000 L - Weight: 195 kg - Dimensions: 2,460 × 2,350 × 1,350 mm - Max. height with shaft: max. 2,050 mm - RT 6000 - Total volume: 6,000 L - 50% retention: 3,000 L - 100% retention: 6,000 L - Weight: 255 kg - Dimensions: 3,200 × 1,830 × 1,945 mm - Max. height with shaft: max. 2,875 mm - RT 7000 (two linked units) - Total volume: 7,000 L - 50% retention: 3,500 L - 100% retention: 7,000 L - Weight: 285 kg - Dimensions (2 × unit): 2 × 2,350 × 2,300 × 975 mm (two linked tanks) - Max. height with shaft: max. 1,650 mm - RT 10000 (two linked units) - Total volume: 10,000 L - 50% retention: 5,000 L - 100% retention: 10,000 L - Weight: 365 kg - Dimensions (2 × unit): 2 × 2,460 × 2,350 × 1,350 mm (two linked tanks) - Max. height with shaft: max. 2,050 mm Installation & operation ✅ - ✅ Proper excavation and frost-protection layer per manufacturer/engineer specifications - ✅ For trafficked areas, choose the optional vehicle-rated cover and install according to structural requirements - ✅ Regular inspection and cleaning of the filter basket improves operational reliability - ✅ Adjust the retention flow restrictor to local discharge requirements and sewer connection conditions Compact technical data - Material: PE (polyethylene), UV-stable - Retention volume: 50% or 100% (custom options available) - Standard restrictor: 1" (0.07–0.5 l/s); other sizes on request - Connections: DN 100 inlet, DN 100 overflow siphon, DN 100 conduit connection - Shaft: DN 600 including lid; pedestrian-rated cover standard Conclusion ✅ The Roth Retention Tank is a robust, low-maintenance and flexibly configurable solution for rainwater retention and reuse. With sizes from 3,500 to 10,000 liters, selectable retention (50% / 100%) and well-thought-out connection and filter options, the system is particularly suitable for commercial construction and infrastructure projects, agricultural applications and industrial site drainage. Contact us for tailored offers, custom restrictors or the vehicle-loadable version.