Frequently Asked Questions

A tundish is a fitting that provides an air gap between a discharge pipe and the waste line, preventing backflow and allowing visible discharge.
Near pressure relief valve outlets on hot water systems or backflow prevention devices, in a visible location.
Yes. All models comply with AS/NZS 3500 and are WaterMark approved.
Most models feature standard 20mm or 25mm inlets, with compatible outlet pipe sizes — check product specs.
Yes. 3Monkeez offers vertical and horizontal inlet models for installation flexibility.
Absolutely. The stainless steel construction is perfect for high-temp discharge lines.
Yes, if local regulations require a visible, compliant method of overflow discharge.
Yes. The hygienic stainless steel design is ideal for sterile or safety-critical environments.
For safety-critical and pressure discharge systems, yes — it prevents backflow and contamination.
Because they combine compliance, durability, and ease of installation — trusted across commercial plumbing projects.

What Is a Tundish?

tundish is a plumbing fitting that provides an air gap between a discharge pipe (like from a pressure relief valve) and the connected waste system. This air gap prevents backflow contamination and allows visible inspection of any discharge — making it an essential component in compliant plumbing designs.

3Monkeez tundishes are manufactured from 304 stainless steel for strength, hygiene, and long-term durability, especially in commercial hot water or safety-critical applications.

Key Features of 3Monkeez Tundishes:

  • ✅ 304-Grade Stainless Steel – Hygienic, corrosion-resistant, and ideal for hot water
  • ✅ WaterMark Certified – Meets AS/NZS 3500 plumbing regulations
  • ✅ Welded One-Piece Construction – Leak-proof and robust
  • ✅ Horizontal & Vertical Inlet Options – Flexible installation on-site
  • ✅ Polished or Brushed Finishes – Suits commercial and exposed areas
  • ✅ Open Sight Gap Design – Ensures visible discharge monitoring

Common Use Cases:

  • Hot water system pressure relief valve discharge
  • Air conditioning and refrigeration condensate drain lines
  • RPZ (Reduced Pressure Zone) backflow prevention devices
  • Boilers, chillers, and plant room drainage
  • Healthcare, laboratories, and aged care facilities

💡 Pro Tip: Always install tundishes in visible locations for compliance and maintenance ease.

Built for Australian Compliance

3Monkeez tundishes are WaterMark certified and engineered to comply with AS/NZS 3500. They're:

  • Trusted by plumbers and specifiers for commercial and industrial fit-outs
  • Designed to prevent siphonage, backflow, and system contamination
  • Suitable for both retrofit and new-build installations

Whether you're outfitting a plant room or updating a commercial kitchen, 3Monkeez tundishes offer peace of mind and long-term performance.