RPZ Cage Protection That Meets School and Commercial Specs
At Caged Up, we design and supply durable, regulation-compliant RPZ cage solutions engineered to protect vital plumbing assets from vandalism, impact, and unauthorised interference.
Built with experience from servicing Queensland’s education and government sectors, our RPZ cages (also known as backflow cage or backflow valve cage) are specifically designed for reduced pressure zone valves—ensuring these critical safety devices are protected in exposed or high-traffic environments.
Whether you're managing school sites, municipal projects, or large-scale developments, our cages offer the strength, visibility, and compliance you need.
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Why a Backflow Cage is Critical for Site Safety
An unprotected backflow prevention device is vulnerable to vandalism, tampering, and environmental wear. A backflow cage provides robust protection for these devices, which are essential to maintaining clean water supply and public health.
In school environments, RPZ cages are often a required part of infrastructure—mandated by spec to prevent children or unauthorised individuals from interfering with exposed equipment. At Caged Up, we supply custom-made backflow valve cages that meet these project requirements precisely.
Clients rely on our expertise to ensure compliance with local regulations while delivering fast turnaround times and reliable support.
Backflow Device Cage Options: Built to Specification
Each backflow device cage we produce is made to order, ensuring the right fit and finish for your exact application. Standard cages won’t always match the dimensions of RPZ installations, so we work from client specifications to fabricate solutions that provide full coverage and accessibility for maintenance. Key Features:
- Made from either aluminium or steel, depending on budget, environment, and durability needs.
- Incorporates small diamond grill mesh—the same knife-proof material used in security screens.
- Designed to comply with QBuild and other government project specs.
- Welded construction where required to meet “fully welded” spec conditions.
- Raw or powder-coated finishes available.

Condenser Cage and Multi-Use Protection
Many clients also request a condenser cage alongside their backflow valve cage to create a consistent, site-wide equipment protection plan. Whether it's an AC unit, inverter, or valve, Caged Up delivers tailored solutions that shield outdoor mechanicals from both intentional and environmental damage.
Built for Aussie Conditions, Fabricated Locally
Our backflow valve cages are manufactured in Queensland using locally sourced materials. While some components like mesh may be produced overseas, our full fabrication process is proudly Aussie. This gives you several advantages:
- Faster turnaround (usually 2–3 weeks depending on materials and queue).
- Custom-fit accuracy for any site or spec.
- Better alignment with government procurement preferences to support local suppliers.
- Reduced risk of freight damage, delays, or offshore miscommunication.


Installation Flexibility with Every RPZ Cage
While installation is not our primary service, we do offer it as an optional add-on. Most clients handle installation in-house or through contractors, especially on government or commercial sites.
Competitive Advantage: Simplicity, Customisation, and Service
What sets Caged Up apart from generic suppliers or overseas imports?
- Custom fabrication: We don’t just sell “off-the-shelf” units—we build what your site needs.
- Australian-made strength: No flat packs, no bolts—fully welded where required.
- Client-first service: Straightforward ordering, help with specs, and responsive communication.
- Reliable turnaround: Aluminium cages can be completed in as little as one week. Steel cages, which require galvanising, typically take about four.
And with our history of supplying to schools, city councils, and commercial trades, we understand the unique challenges of securing critical infrastructure in public spaces.

Frequently Asked Questions
- What is an RPZ cage used for?
An RPZ cage is used to protect a Reduced Pressure Zone (RPZ) valve—a vital plumbing device that prevents contaminated water from flowing back into clean supply lines. These valves are often mandated by building codes, especially in schools.
- Why do I need a backflow cage?
A backflow cage prevents tampering, vandalism, and environmental damage to your backflow prevention devices. They’re essential for maintaining water quality and ensuring that RPZ devices remain functional.
- Are your cages compliant with school and government specs?
Yes. Our backflow valve cages meet QBuild and Department of Education specs, including requirements for fully welded construction and specific mesh types.
- Can I order a custom backflow device cage?
Absolutely. Most of our work is custom-built to exact client measurements, ensuring a secure fit and streamlined installation process.
- What’s the difference between a condenser cage and a backflow valve cage?
A condenser cage protects HVAC condenser units, while a backflow valve cage secures plumbing devices. However, both are made with similar materials and construction methods for external protection.
- Do you offer powder coating or colour matching for RPZ cages?
Yes. While most school specs don’t require it, powder coating is available for clients wanting a specific aesthetic or added layer of protection.
- What’s your turnaround time for a typical RPZ cage?
Our standard lead time is 2–3 weeks. Steel cages take longer due to galvanising. For urgent projects, aluminium RPZ cages can be fast-tracked depending on our production load.
- Do you offer volume discounts or council supply options?
Yes. We’ve supplied to Brisbane City Council and other large-volume buyers. Get in touch for bulk pricing or government procurement options.

