PermaVent®
GRP vent shafts
Used on greenfield projects and in retrofit situations, replacing damaged or corroded metal shafts.
- Smooth interior surface
- Will not rust
- No cathodic protection required
GRP Vent Shafts & Exhaust Stacks
PermaVent® & PermaStack®
GRP vent shafts and waste gas exhaust stacks, chemically and structurally engineered to resist a wide range of acids, alkalis, solvents and corrosive fumes.
- Installed from 10m to in excess of 100m in height
- Rated 50 years durability
- Virtually maintenance free once installed
- Any colour
RPC’s GRP vent shafts, PermaVent®, and GRP waste gas stacks, PermaStack®, are chemically and structurally engineered with the optimal balance of resin and glass fibre for resistance to a wide range of acids, alkalis, solvents and corrosive fumes.
In addition to their resistance to corrosion, pitting and scaling, they are immune to virtually all bacteriological corrosion, will not rust and do not require any form of cathodic protection. A surface coating applied during manufacture ensures a long life even in Australia’s most demanding climatic conditions. Once installed, PermaVent® and PermaStack® are virtually maintenance free.
PermaStack® is designed by RPC’s professionally qualified, experienced engineering team and custom fabricated in our purpose-built factories. RPC has successfully designed, manufactured and installed PermaStack® from 10m to in excess of 100m in height.
The range
PermaVent® · PermaStack®
PermaStack®
GRP waste gas and exhaust stacks
Custom designed ventilation and waste gas exhaust stacks. In accordance with local wind loading designation, geology and topography, PermaStack® may be free standing, guyed or supported by a lattice steel frame.
- Light weight
- Rigid but flexible
- Excellent machinability
Advantages
- Excellent corrosion resistance
- Smooth interior surface
- Rated 50 years durability
- Lifestyle colours (any colour)
- No maintenance
Applications
- Sewage reticulation systems
- Sewage pumping stations
- Sewage treatment plants
- Potable water supply systems
- Industrial, petrochemical and food processing industries
- Mineral processing, pulp and paper, chemical process, oil and gas, and power generation
Proven in service
- PermaVent® is used extensively by SA Water, Hunter Water, Sydney Water and Gold Coast City Council
- St Marys WRRF: 1.2m diameter × 18m GRP stack (2024)
- BHP Whyalla: 3.8m diameter × 100m exhaust stack (1998)
Brochures and data sheets
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