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Browse Promax tank categories for residential, rural, commercial, and specialised applications.
Water Tanks
Durable above-ground water tanks for rural, residential, and commercial storage.
Underground Tanks
Underground water storage for sites where space, access, or visibility matters.
Slimline Tanks
Narrow-profile tanks designed for homes, boundaries, and other restricted spaces.
Industrial Tanks
Specialised tanks for demanding commercial, industrial, and process applications.
Water storage, rain harvesting, septic and wastewater solutions for homes and building projects across New Zealand.
Liquid transport, dust suppression and site water management solutions built for demanding site conditions.
Engineered liquid storage solutions for industrial sites, processing plants and specialised applications.
Water storage and liquid management solutions for farms, lifestyle blocks and rural properties.
Easy to specify
Easy access to technical specs, drawing files and compliance documentation.
Easy to install
We engineer ease and practicality in for the every link in the value chain.
Built for purpose
Every vessel is tailored to your requirements - from access ports and fittings to seismic restraints.
Built on Experience
From rural properties to industrial sites, Promax delivers proven solutions backed by local expertise and nationwide reach.
Trade & Specifier Portal
Access our full library of technical resources in one place. Log in to download product specifications, installation guides, drawings, and more. Everything you need to specify and install Promax products with confidence.
Skip the research.
Talk to our team.
Our team knows this range inside out. Tell us about your build, what you're trying to achieve, where it's going, or what you're unsure about and we'll come back with a clear recommendation. No jargon, no obligation.
- Personalised product recommendations for your specific project
- Spec, compliance and sizing guidance included
- Fast replies — usually within one business day