Monobloc Collection Container 900L Shaft DN 300 for Garden Irrigation

Roth Rainwater Collection Tanks – efficient garden irrigation (approx. 900–3000 L) The Roth collection tanks are compact, robust underground storage units for harvesting rainwater for garden irrigation and small to medium areas. Models with an integrated filter basket provide clean inlet treatment; larger versions offer convenient riser shafts (domes) for easy access with a submersible pump. Installation without a crane is possible depending on the model. ✔️ Benefits for commercial customers - ✔️ Efficient use of rainwater to reduce potable water consumption - ✔️ Models with integrated filter basket for cleaner inflow and reduced maintenance - ✔️ Compact Monobloc design (900 L) ideal for tight installation spaces - ✔️ No crane required for certain versions — faster on-site installation - ✔️ Robust construction with a walkable cover and secure riser shaft for safe operation - ✔️ Water extraction via submersible pump possible — easy connection to irrigation systems Technical features and installation notes - ✔️ Filter basket: On the 1000 L and 1500 L models the riser is permanently bolted to the tank and contains an integrated filter basket. The 2000 L and 3000 L filter-basket versions have a permanently welded riser shaft DN 600 with integrated filter basket. - ✔️ Inlet: Inlet spigot DN 100 located at the shaft (on filter-basket models the inlet is also arranged at the shaft). - ✔️ Without filter basket: Models without a filter basket have a permanently welded access shaft with a walkable cover (shaft length 550 mm, not extendable). Two DN 100 pipe spigots for inlet and overflow are welded into the end faces. - ✔️ Installation type: Designed for single installation — no bottom flange connections. - ✔️ Water extraction: Water can be withdrawn via the top threaded connection using a submersible pump; larger models also allow withdrawal via the riser shaft. - ✔️ Monobloc 900: Compact design, ideal for small plots and confined installation conditions. Model overview - Model: Collection tank Monobloc 900, shaft DN 300 - Volume: 900 L - Dimensions L x W x H (mm): 1910 x 780 x 780 - Height with shaft (mm): 1410 - Inspection opening: Ø 300 mm - Weight: 70 kg - Filter basket: – (no) - Model: Collection tank 1000 L (without filter basket) - Volume: 1000 L - Dimensions L x W x H (mm): 1235 x 720 x 1700 - Height with shaft (mm): 1700 - Inspection opening: Oval 500 x 400 mm - Weight: 60 kg - Filter basket: no - Model: Collection tank 1500 L (without filter basket) - Volume: 1500 L - Dimensions L x W x H (mm): 1880 x 720 x 1960 - Height with shaft (mm): 1960 - Inspection opening: Oval 500 x 400 mm - Weight: 75 kg - Filter basket: no - Model: Collection tank 2000 L (without filter basket) - Volume: 2000 L - Dimensions L x W x H (mm): 2020 x 880 x 2170 - Height with shaft (mm): 2170 - Inspection opening: Oval 500 x 400 mm - Weight: 100 kg - Filter basket: no - Model: Collection tank 3000 L (without filter basket) - Volume: 3000 L - Dimensions L x W x H (mm): 2630 x 880 x 2170 - Height with shaft (mm): 2170 - Inspection opening: Oval 500 x 400 mm - Weight: 135 kg - Filter basket: no - Model: Collection tank 1000 L (with filter basket) - Volume: 1000 L - Dimensions L x W x H (mm): 1235 x 720 x 1680 - Height with shaft (mm): 1680 - Inspection opening: Ø 390 mm - Weight: 45 kg - Filter basket: yes - Model: Collection tank 1500 L (with filter basket) - Volume: 1500 L - Dimensions L x W x H (mm): 1880 x 720 x 1905 - Height with shaft (mm): 1905 - Inspection opening: Ø 390 mm - Weight: 60 kg - Filter basket: yes - Model: Collection tank 2000 L (with filter basket) - Volume: 2000 L - Dimensions L x W x H (mm): 2020 x 880 x 2170 - Height with shaft (mm): 2170 - Inspection opening: Oval 500 x 400 mm - Weight: 105 kg - Filter basket: yes - Model: Collection tank 3000 L (with filter basket) - Volume: 3000 L - Dimensions L x W x H (mm): 2630 x 880 x 2170 - Height with shaft (mm): 2170 - Inspection opening: Oval 500 x 400 mm - Weight: 140 kg - Filter basket: yes ✔️ Selection notes - ✔️ Choose models with a filter basket if you want pre-cleaning of incoming water and reduced cleaning intervals. - ✔️ The Monobloc 900 is particularly useful where installation space is limited. - ✔️ If you plan to use a submersible pump, check the shaft and inspection opening dimensions (Ø / oval) to ensure the pump fits. - ✔️ Note: Shaft extensions are not possible. Models without a filter basket are intended for single installation only. ✔️ Accessories and installation Suitable accessories and pumps are available in our product range. For connection to irrigation systems we recommend submersible pumps with compatible DN 100 fittings or use of the top threaded connections. Conclusion The Roth collection tanks offer a practical solution for rainwater harvesting for commercial projects, construction, trades and agriculture: compact Monobloc variants for tight installations, larger volumes with comfortable riser shafts and optional filter baskets for clean inflow. Robust, low-maintenance and versatile — ideal for sustainable garden irrigation and reducing potable water consumption.