Most call-backs on commercial drainage work come down to one of three things: debris getting into the line, backflow where it shouldn't happen, or a pressure test that won't hold. Here's how to spec each one properly.
Strainer baskets — matching the basket to the outlet
Our 316 stainless floor waste range and the 304 stainless commercial drain strainer basket range cover 80mm, 100mm and 150mm outlets — removable baskets make a real difference on maintenance call-backs in commercial kitchens and washdown areas, since the trap itself never needs to come out to clear debris. Match the basket size to the outlet exactly; oversizing to "make it fit" is the single most common cause of a strainer working loose under flow.
Dual check valves — where backflow prevention is non-negotiable
A 15mm brass dual check valve, 1200kPa rated with a Neoperl valve core is the standard spec for point-of-use backflow protection on hose taps, irrigation take-offs and similar low-hazard connections under AS/NZS 3500. Dual check isn't a substitute for testable backflow prevention on higher-hazard connections — know which category you're dealing with before you spec down to a dual check.
Test plugs — pressure-testing without the mess
An inflatable test plug with hand pump earns its keep on any job where you need to isolate and pressure-test a section without cutting or capping. For anyone running multiple pipe sizes regularly, the 50/100/150mm bundle covers the common range in one kit rather than buying plugs one size at a time as jobs come up.
All three categories are stocked and shipped Australia-wide — browse the full floor waste and drainage accessory ranges for the rest of the fit-out.