Lockable RPZD / Backflow Protection Cage

Australian Made – Custom Fabricated DuraGal Steel

Protect critical water infrastructure with a purpose-built, lockable steel protection cage designed for RPZD units, backflow preventers, water meters and valve assemblies.

These cages are fabricated in Australia using heavy-duty DuraGal steel, welded mesh, fully welded corners with a protective zinc paint coat, and secure locking points to prevent vandalism, accidental damage and unauthorized access — while still allowing easy servicing when required.

Built from real-world plumbing experience, this design has been installed and proven onsite.

How to Order

Use the Custom Cage Size, Weight & Spec Builder above the Add to Cart button to configure your cage:

1. Select Your Cage Style: Choose from Bent Mesh Only, Standard DuraGal Angle Frame, or Heavy-Duty Industrial Frame.
2. Enter Your Dimensions (W × H × D in mm): The calculator automatically works out your cubic volume (m³), estimates the weight, and selects the matching Size tier for you.
3. Select Your Build Specifications: Choose your mesh coverage (open bottom or open back), mounting bracket position, and hinged door/lid access direction.

3 Cage Styles Available

All styles feature fully welded corners treated with a protective zinc paint coat:

• 1. Bent Mesh Only (3mm 50×50mm Mesh – No Frame / No Door):
  Fabricated from folded 50 × 50 × 3 mm welded mesh with welded corners and a zinc paint coat. Covers 5 sides with an open bottom or back. Does not include an angle frame or hinged lid/door (designed as a fixed bolt-down / lift-off enclosure).

• 2. Standard Frame (25×25×2.5mm DuraGal Angle + 3mm 50×50mm Mesh):
  Fabricated with a 25 × 25 × 2.5 mm DuraGal angle steel frame and 50 × 50 × 3 mm welded mesh, welded corners and zinc paint finish. Includes 1 hinged lockable door/lid and 5 sides covered (including the lid/door), leaving either the back or bottom open depending on your selection.

• 3. Heavy Duty Frame (50×50×5mm Steel Angle + 5mm 50×50mm Mesh):
  Fabricated from 50 × 50 × 5 mm heavy-duty steel angle paired with 50 × 50 × 5 mm heavy-duty welded mesh, fully welded corners and zinc paint finish. Includes 1 hinged lockable door/lid and 5 sides covered (including the lid/door), leaving either the back or bottom open depending on your selection.

Standard Specifications

Standard Size (0.04m³ tier reference):

• Width: 650 mm

• Height: 280 mm

• Depth: 180 mm

Construction:

• DuraGal steel construction with fully welded corners

• Choice of Bent 3 mm Mesh, Standard 25 × 25 × 2.5 mm Angle Frame, or Heavy Duty 50 × 50 × 5 mm Angle Frame

• Heavy-duty welded mesh (50 × 50 mm in 3 mm or 5 mm wire)

• 5 sides covered — open bottom or open back for drainage, pipe clearance & compliance

• Hinged lid or door for servicing access (on Standard & Heavy Duty framed models)

• Welded hasp & staple (padlock ready)

• Mounting tabs with 10 mm fixing holes (positioned on back, base, front, or sides to suit your site)

Finish:

• DuraGal steel with zinc-rich galvanized paint to welds (standard)

• Optional hot-dip galvanizing available on request

Available Options

• Standard 0.04m³ size (as listed above)

• Medium, Large, Most Popular 0.1m³, XL, XXL & Commercial sizes for single or multi-valve installations

• Custom dimensions built to suit your exact pipe layout

• Supply only or supply & install (quoted separately)

• Custom Logo / Signage for the front

Lead Time

• Manufacture: 1-2 weeks

• Built to order in Cornubia, QLD, Australia

• Free local pickup from Cornubia 4130 QLD or Australia-wide delivery

Ideal For

• RPZD / backflow prevention units

• Water meters & valve assemblies

• Commercial plumbing installations

• Body corporate & facility management

• Vandal-prone or public access areas

Why Choose Our Cages?

• Australian owned & fabricated

• Designed for real plumbing installs

• Strong, secure & service-friendly

• No off-the-shelf compromise

• Built to last in commercial environments

Need a Custom Cage?

If you’re unsure on sizing or need something specific, use our enquiry form or contact us directly. Photos, sketches and site measurements are welcome.

Made in Australia. Built properly.