Double Wall Spiral-Wound HDPE Tanks with Vacuum Safety Monitoring and German DIBt Construction Certification Z-40.21-169


Upright Double Walled HDPE Tanks With Vacuum Safety Monitoring (VSM)
formoplast double wall HDPE tanks are the safe and environment-friendly solution for storage of hazardous substances (Chemical Resistance List). Their double wall design with integrated VSM leak monitoring eliminates the need for costly secondary containment systems. The annular void space between the walls is constantly monitored by a certified leak detection device. The pressure in the void space is maintained within narrow limits by a vacuum pump. An increase in pressure above the upper limit is an indication of a leak which immediately triggers a visual and acoustic alarm. The acoustic alarm can be turned off only by resetting a sealed switch. The flashing light alarm stays on until the damage has been located.

Our flat bottom tanks are available with optional walk-on working platforms and cage ladders for easy access and inspection. formoplast tanks can be supplied with electric-jacket heaters or over-the-side immersion heaters for controlled-temperature storage and/or energy-saving polyurethane foam insulation (tank equipment).

To initiate a specific enquiry, use our enquiry form

Safety Without Compromises - formoplast tanks fulfil all legal regulations

If the tank is large in height or will contain high-density liquids, removal of the contents through the roof may be physically impossible. For such cases we offer a take-off drain system consisting of a leak-monitored double wall pipeline.

In the event the tank is equipped with inlet/outlet ports or manholes, individual acceptance inspection by the third-party inspection agency will required. This inspection is conducted in our works

HDPE Technology for Highest Safety and Decisive Benefits 
- Outstanding chemical resistance
- Excellent corrosion and weathering resistance
- Homogeneous monolithic material
- Good insulation properties
- Space-saving design
- Easy to transport and install
- Lightweight
- Low thermal conductivity
- Long service life
- Simple, cost-efficient retrofitting of accessories

Technical Data

The tables linked to below show our standard product programme of upright flat bottom tanks. 
Tanks up to 50,000 L in volume
Large-scale tanks (over 50,000 L in volume)

To initiate a specific enquiry, use our enquiry form

Flyer double wall tanks (PDF):

Double_wall_tanks.pdf