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MiniMet Valves

MiniMet Single Check Valves are precision-engineered, stainless steel backflow prevention valves designed for low hazard backflow scenarios where simple, reliable one-way flow control is required. These valves automatically prevent reverse flow, protecting potable water supplies from contamination without sacrificing performance or serviceability.

Why Choose MiniMet Single Check Valves

Purpose-Built for Backflow Prevention

MiniMet valves provide automatic backflow protection by allowing fluid to flow in only one direction — preventing unwanted reverse flow that could contaminate the clean water supply. They are ideal for low risk applications such as branch lines, irrigation mains, and non-critical service connections.

316 Stainless Steel Construction

Constructed from 316 Sch10 stainless steel, MiniMet valves deliver exceptional corrosion resistance and long-term durability in wet environments. Stainless steel minimises rust, internal debris and paint blistering, making these valves suitable for demanding conditions without frequent maintenance.

Compact, Plumber-Friendly Design

• Roll-groove coupling for rapid service access
• Lightweight body reduces install effort
• Horizontal or vertical installation options
• Lead-free materials compliant with potable water regulations

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Valve images

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Product specification

Size	Lay Length	Width	Height	Connection	Product Code
65 mm	330 mm	280 mm	280 mm	Table D/E	MiniMet65AT
80 mm	330 mm	280 mm	280 mm	Table D/E	MiniMet80AT
100 mm	330 mm	280 mm	280 mm	Table D	MiniMet100ATD
100 mm	330 mm	280 mm	280 mm	Table E	MiniMet100ATE
150 mm	545 mm	420 mm	420 mm	Table D	MiniMet150ATD
150 mm	545 mm	420 mm	420 mm	Table E	MiniMet150ATE

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Technical specifications

Feature	Specification
Material	316 Sch10 Stainless Steel (body and internals)
Backflow Protection Type	Single Check Valve (one-way flow control)
Pressure Rating	PN16 (medium pressure systems)
Installation Orientation	Horizontal or vertical
Test Taps	Top-mounted test ports for verification
Sevicability	Simple roll-groove access for maintenance
Hazard Rating	Low hazard backflow prevention

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Standards, Performance and Certification

Certified and tested to Australian standards:

• WaterMark Certified under Hydromet’s license WM-022473 (IAPMO Oceania accredited)
• AS/NZS 2845.1 compliant, backed by NATA-approved testing data

This ensures compliance in potable water applications where regulatory acceptance and system safety are paramount. This product complies with the Lead Free requirements of the National Construction Code, Volume 3 (PCA)

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Key benefits

Reliable Backflow Prevention

MiniMet check valves operate automatically based on fluid pressure, opening when forward flow occurs and closing to prevent reverse flow — safeguarding the supply without manual intervention.

Low Maintenance

Stainless steel internals and simple servicing minimize downtime, while top-mounted test taps simplify routine verification and inspection.

Installer-Focused Design

Contractors benefit from ease of installation and service access — reducing labour time and operational interruptions on site.

Optimised for Water Systems

Designed with flow efficiency in mind, these check valves maintain system performance with minimal pressure loss, ensuring stable operation under typical service conditions.

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Accreditation

Hydromet commissioned AWQC to conduct an updated testing program of sampled components supplied into the marketplace on behalf of Hydromet. With the result of this testing program conforming with the requirements of AS/NZS 4020.

• WaterMark Certification
  • NATA approved test reports ensure the quality and compliance of over 40 MiniMet and MetCheck backflow prevention valve models, upholding WaterMark certification. These valves are certified on the Hydromet WM license WM-022473 and Hydromet are subject to annual surveillance by IAPMO Oceania for continued compliance with the WaterMark Certification Scheme.

AS/NZS 2845.1 – MiniMet and MetCheck valves are compliant with AS/NZS 2845.1. All MiniMet and MetCheck valves have a classification of either a low or medium hazard rating, as defined in Volume 3 of the NCC, the Plumbing Code of Australia.

Flanged stainless steel pipework – The AS/NZS 4020 test reports also extend to cover the various SS316 flanged pipes manufactured by Hydromet, with these components being available to suit the installation of any backflow prevention valve or water meter assemblies.