Detention cistern for rainwater detention and sewer relief

  • A detention cistern retains the rainwater and drains it into the sewer at a delayed speed.
  • GRAF cistern for rainwater detention and sewer relief.
  • To guarantee retention of rainwater, a delayed drain is fitted in the sewer with a delay of 0.05 to 16 l/sec. depending on the customer’s specifications.
  • In the event of heavy rainfall, the water level in the cistern rises above this level and is drained into the sewer at a delayed speed using a floating drain choke. This relieves the sewer and the treatment works. The water level can rise to the emergency overflow and sink slowly back down again after the rain.
  • We also construct and supply individual, special solutions.

Advantages Platin XL flat tank:

  • Rotating tank dome to easily align the connecting lines
  • Available with a second tank dome as an option
  • Suitable for HGV loading up to a vehicle weight of 30 t (66138 lbs)
  • Flexible connection up to DN 300 (12")
  • Connection openings with prefitted DN 150 (6") lip seals
  • Tank height of just 125 cm (4' 1")
  • High-quality, integrated DN 150 (6") filter technology
  • Dome opening with stainless steel profile for precision fit and secure mounting
  • Connection fitting of up to DN 200 (8"), on tank dome of up to DN 300

Scope of supply: 

  • Platin XL flat tank
  • Detention set: floating choke drain, outlet fittings with emergency overflow, DN 100 (4") connection

Not included in the scope of supply:

  • Matching cover
  • Installation of optional Platin XL/XXL detention/retention filter package 2

Advantages

Thought-out in every detail

360° rotatable tank dome
360° rotatable tank dome
360° rotatable tank dome

Allows easy alignment to the connecting pipes. A tank that turns it`s head for you.

Low installation depth
Low installation depth
Low installation depth

The minimal installation depth saves you time and money during installation.

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 GRAF 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 200.

360° rotatable tank dome

Allows easy alignment to the connecting pipes. A tank that turns it`s head for you.

Low installation depth

The minimal installation depth saves you time and money during installation.

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 GRAF 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 200.

Sizing

Volume [l]Retention volume [l]Length [mm]Width [mm]Height [mm]Weight [kg]order no.add to enquiry
1000010000490022501910460390327
1500015000750022501910710390328

calculated size Request for information

Technical details

Installation

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

Accessibility

Earth covering with loading capacity [mm] 700 - 1300
max. axle load [t] 11.5
max. vehicle weight [t] 30

Groundwater installation

Earth covering with groundwater installation [mm] 700 - 1500

Downloads

Accessory