GRAF detention cisterns for rain detention and channel relief.

Detention systems, i.e. rainwater detention, play an important role in the reduction of hydraulic peaks and thus help relieve strain on the public sewer network, particularly in new construction areas. Detention systems usually consist of a volume which is used for the temporary storage of rainwater in the event of heavy rainfall, and a throttling device to limit the draining runoff water. The rainwater is cleaned using a filter before it enters the detention volume in order to avoid compromising the function of the throttling device. The throttled flow of rainfall is fed into the sewer and the excess amount is retained in the detention cistern. This amount accumulates in the detention cistern and is also drained off with the throttled runoff water after the rainfall event. The detention volume is thus discharged and remains available once more as a temporary storage tank for the next rainfall event.

Advantages Carat XXL detention cistern:

  • Suitable for HGV loading up to 40 t
  • Can be mounted in groundwater
  • Dome opening with stainless steel profile for precision fit and secure mounting
  • Lower weight than concrete and steel
  • Various connection surfaces DN 100 (4")/150 (6")/200 (8")
  • Available with DN 300 (12") connection as an option
  • Available with a second tank dome as an option
  • 102,000 l Volume possible
  • Investment security thanks to a 15 year warranty

Advantages

Thought-out in every detail

Low weight
Low weight
Low weight

Tank installation made easy! The significantly lower weight of GRAF products compared to steel or concrete cisterns makes transport and installation easier.

Optionally with second tank dome
Optionally with second tank dome
Optionally with second tank dome

The GRAF XXL tank can optionally be equipped with a second tank dome.

Dome opening with stainless steel profile
Dome opening with stainless steel profile
Dome opening with stainless steel profile

Dome opening with stainless steel profile for high fitting accuracy and mounting safety.

Ready for connection
Ready for connection
Ready for connection

With GARANTIA tank systems, the connection seals are already pre-drilled and lip seals are pre-assembled. This saves time and therefore costs during installation.

Individual connections possible
Individual connections possible
Individual connections possible

Flexible connections possible according to customer requirements on the tank dome up to DN 300 or on the end face up to DN 300.

Low weight

Tank installation made easy! The significantly lower weight of GRAF products compared to steel or concrete cisterns makes transport and installation easier.

Optionally with second tank dome

The GRAF XXL tank can optionally be equipped with a second tank dome.

Dome opening with stainless steel profile

Dome opening with stainless steel profile for high fitting accuracy and mounting safety.

Ready for connection

With GARANTIA tank systems, the connection seals are already pre-drilled and lip seals are pre-assembled. This saves time and therefore costs during installation.

Individual connections possible

Flexible connections possible according to customer requirements on the tank dome up to DN 300 or on the end face up to DN 300.

Sizing

Volume [l]order no.add to enquiry
122000380551
116000380550
112000380519
106000380518
102000380517
96000380516
92000380515
86000380514
82000380513
76000380512
72000380511
66000380510
62000380509
56000380508
52000380507
46000380506
42000380505
36000380504
32000380503
26000380502
22000380501
16000380500
Length [mm]Width [mm]Height [mm]Weight [kg]
28600250031604900
27330250031604610
26360250031604510
25090250031604220
24120250031604120
22850250031603830
21880250031603730
20610250031603440
19640250031603330
18370250031603040
17400250025502940
16130250031602650
15160250031602550
13890250031602260
12920250031602160
11650250031601870
10680250031601770
9410250031601480
8440250031601380
7200250031601100
6230250031601000
459025003160750

calculated size Request for information

Technical details

Accessibility

Earth covering with loading capacity [mm] 800 - 1500
max. axle load [t] 13.5
max. vehicle weight [t] 40
max. vehicle weight with reinforced concrete slab [t] 60

Groundwater installation

Earth covering with groundwater installation [mm] 800 - 1500

Installation

max. earth covering [mm] (without groundwater, vehicle loading) 1500

Accessory