Contacto
HUESKER, Inc.
Suite 525
3701 Arco Corporate Drive
Charlotte
USA

Short Summary

Short Summary

Precision quality for safe and sound storage of liquids

Cubiertas Covertec concebidas para evitar olores y emisiones perjudiciales cada vez más reguladas y controladas a nivel normativo.

Las cubiertas de doble membrana Covertec son una solución innovadora y de primera calidad para cubiertas superiores en la industria del Biogás.

Disponemos de una amplia variedad de componentes para aplicaciones de Biogás.

Galerie

Details

  • Covertec double membrane roof
  • Covertec silo cover
  • Covertec silo cover with gas-tight lung
  • Covertec weatherproof silo cover
  • Covertec weatherproof silo cover Eco

Double membrane roof maximizes storage volume of biogas plants

The Covertec double membrane roof is an innovative, premium-quality roof system for the biogas industry. The system comprises two separate membranes manufactured from polyester woven fabric, PVC-coated on both sides, with a minimum weight of 27 oz/yd² (900 g/m²) and a minimum tear resistance of 900 lbs per 2 in. (4,000 N per 5 cm). The double-layer assembly is designed to even out pressure fluctuations in the container while the hemispherical and rotunda shape serves to maximize storage capacity. At the same time, the domed surface protects the cover against external weather action, such as heavy snow loads in winter.

Features

  • High-tech membranes with minimum weight of 27 oz/yd² (900 g/m2 )
  • Stainless-steel clamping strip connections
  • Integral supporting air blower with stainless-steel weather cover and outlet valve in external membrane
  • Supporting construction comprising custom-developed, low-strain straps and desulphurization mesh
  • Visual gas level indicator
  • Rainwater deflector and edge cover to protect top edge of container
  • Pressure safety valve (35,315 ft³/h) (1,000 m3/h flow rate) with integral condensate ring to reduce risk of freezing in winter
  • Central column in hardwood or stainless steel, as required
  • Operating pressure of 0.05 psi (+3.5 mbar), designed for short-term peaks up to 0.15 psi (+10 mbar)

Why choose Covertec double membrane roofs?

Low gas permeability, maximum gas storage capacity, extremely high UV stability and high tear resistance are just some of the benefits offered by the Covertec double membrane roof. Manufactured in diameters of up to 148 ft (45 m), they offer reliable protection against snow loads. Moreover, all Covertec double membrane roofs are provided with a five-year warranty.

We would be glad to perform a project- and site-specific structural calculation on your behalf. On request, we will also carry out the full installation (incl. provision of work platforms and cranes).

The package covers all system components, including central column, supporting strap construction, air blower, gas level indicator and pressure safety device.

Silo cover meeting German pollution regulations

By specifying the Covertec silo control cover for your new-build or retrofit projects, you can rest assured that your manure container will meet the stringent requirements of the BImSchV (German Pollution Control Ordinance). A number of German federal states have underlined their commitment to improved air quality by enacting new laws on the filtration of air from agricultural facilities and tightening the requirements for outdoor manure storage tanks.

Covertec silo covers can be installed with diameters of up to 164 ft (50 m) to provide odor- or gas-tight performance. They are also suitable for use as weatherproof covers for silos as well as many other types of storage container.

Ratchet/belt assemblies fixed to the outside of the silo wall allow tensioning via a curved outer tube, which is threaded through a perimeter seam in the cover.

Features

  • High-tech membranes with minimum weight of 27 oz/yd² (900 g/m2)
  • Odor or gas-tight construction
  • Diameters up to 164 ft (50 m)
  • Central column in hardwood or stainless steel (optional)
  • Tensioned by stainless-steel ratchets/high-tensile belts
  • Suitable for all steel and concrete silos on the market
  • Incl. two 3 ft x 4 ft 3 in. (0.9 x 1.3m) access openings as standard

Why choose Covertec silo covers?

Covertec silo covers prevent water infiltration, thereby maintaining full storage capacity. They also excel by their high tear strength and UV stability. The low gas permeability reduces gas and ammonia emissions by over 95%. At the same time, the nitrogen content of the manure is retained.

We would be glad to perform a project- and site-specific structural calculation on your behalf. On request, we will also carry out the full installation (incl. provision of work platforms and cranes).

The standard silo cover with gas-tight lung is a gas-tight model incorporating a sheet „lung“ for the storage of gas produced by any type of organic substrate. The cover is clamped to the internal face of the silo to produce a gas-tight seal. With the premium-grade model, the gas-tight seal is positioned on the top edge of the container, thus allowing the cover to be removed even when the silo is full

HUESKER INNOVATION „utility model“ patent pending DE 20 2013 105 656 U1

Features

  • High-tech, afbric-reinforced PVC membranes with minimum weight of 900g per m2, outer face coated to reduce susceptibility to soiling
  • High tear resistance of 4,200 & 4,000 N per 5 cm, low gas permeability, high UV stability
  • Suitable for all steel and concrete silos on the market
  • Used in conjunction with HUESKER‘s Flexxovalve 1000W+ pressure safety device to provide reliable, gas-tight cover; approved by TÜV (German Technical Inspection Association)
  • Standard models allow use for up to +3.5 mbar positive pressure and -0.5 mbar negative pressure
  • Central column in hardwood or, if desired, stainless steel • Tensioned by stainless-steel ratchets and high-tensile belts
  • Incl. gas-tight access openings available in various sizes
  • Customized, siet-specific structural calculation
  • 4-year warranty (VOB)
  • Expected service life of 15 years

The Covertec weatherproof silo cover is a premium-quality product for liquid manure storage and biogas industry. In Germany, farmers and biogas plant operators are obliged by law to prevent and respectively reduce nuisance odours and other emissions.

Covertec weatherproof silo covers are available with diameters of up to 50 m and can be installed so as to provide odour-tight or gas-tight performance. The central column can be supplied in either hardwood or stainless steel. Ratchet/belt assemblies fi xed to the outside of the silo wall allow tensioning via a round tube, which is threaded through a hemstitch in the cover.

Features

  • High-tech, afbric-reinforced PVC membranes with minimum weight of 900g per m2, outer face coated brillant to reduce susceptibility to soiling
  • High tear resistance of 4,200 & 4,000 N per 5 cm, low gas permeability, high UV stability
  • With integrated hemstitch to insert tensioning tube (not separately welded on)
  • Tensioned by stainless-steel ratchets and high-tensile belts
  • Belts closely spaced at 75 to 90 cm centres for longer service life and enhanced durability (with structural calculations)
  • Central column in hardwood or, if desired, stainless steel
  • Incl. two access openings measuring 90 x 130 cm or as requested
  • Standard roof pitch of 17°

Optional: Weatherproof silo cover eco

Special features of this cover include its simplified substructure and optional cost savings through supervised installation by the customer’s own staff.

Differences compared to standard model:

  • Standard roof pitch of 15°
  • 1,00 – 1,53 m belt spacings
  • One opening (90 x 130 cm) as standard
  • Supervised installation by two operatives (economical solution with only brief assistance needed on site)

HUESKER is equipped with cutting-edge technology for leak detection in biogas plants. In the highly experienced hands of our installers, the FLIR GF 320 gas-imaging camera guarantees the prompt and reliable identification of leaks. Minor repairs can be directly performed on site and the roof tensioning checked on request. Survey reports and counselling on possible repairs complete the service range. A check on the gas-tightness of your plant will enable you to achieve maximum returns.

Features

  • State-of-the-art technology (FLIR GF 320 gas-imaging camera)
  • Full explanation of results, with optional marking of leaks
  • Optional survey report with counselling on possible repairs
  • Checking and retensioning of covers on request
  • Possibility of performing minor repairs directly on site (provided no gas in container)
  • Gas-tightness test after repair

 

 

The components incorporated in HUESKER systems designed for biogas plants are also individually available. The range includes membranes, PVA supporting strap constructions, supporting air blowers, pressure safety devices as well as membranes and nonwovens with leak detection system.

Features

  • Membranes manufactured from polyester woven fabric, PVC-coated on both sides, with a minimum weight of 27 oz/yd² (900 g/m²) and a minimum tear resistance of 900 lbs. per 2 in. (4,000 N per 5 cm)
  • Polyvinyl alcohol (PVA) supporting strap construction
  • Supporting air blower
  • Pressure safety device protects against dangerous pressure surges
  • Optional, custom-manufactured membranes and nonwovens with leak detection system

Why choose HUESKER biogas components?

Apart from offering high tear resistance, the membranes are also finished with a special protective coating. They combine low gas permeability with extremely high UV stability.

The HUESKER-developed PVA supporting strap assembly offers significantly higher tensile strength and flexibility than standard polyester supporting constructions. It also excels by its long service life.

The full range of system components, including central column, supporting strap construction, air blower, gas level indicator and pressure safety device, is automatically supplied when you purchase a COVERTEC double membrane cover.