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GRAF Australia

Trade waste guide

Commercial grease traps in Australia

Size, specify and quote Sapphire and related arrestors for kitchens that must meet trade waste rules.

Request a project quoteCall 1300 131 971

Direct answer

A commercial grease trap captures fats, oils and grease from kitchen wastewater before sewer discharge. GRAF Australia supplies under-sink traps, Grease Buster, Sapphire Grease Trap and Grease Arrestor SC for cafes, restaurants and food production. Size to hydraulic load and authority rules, then quote through grafaustralia.com.au or 1300 131 971.

How it works

Kitchen wastewater passes through an arrestor that separates FOG before discharge to sewer under trade waste limits.

Kitchen fixturesFOG wastewaterGrease arrestorSapphire / SC / under-sinkSeparates fats, oils, greaseSewer / trade wasteAuthority limitsSize to peak kitchen flow and cleaning access, not floor area alone

What to do next

  1. 01

    Collect kitchen hydraulics

    Fixture schedule, peak covers, and whether the authority has a published sizing rule.

  2. 02

    Choose under-sink, Sapphire, Buster or SC

    Match capacity, footprint and cleaning access. Undersized traps fail audits.

  3. 03

    Quote through GRAF Australia

    Send plans to grafaustralia.com.au or call 1300 131 971 for state sales lead times.

When a commercial grease trap is required

Food premises that discharge FOG-laden wastewater typically need an approved grease arrestor under trade waste or council rules. New fit-outs, refurbishments and capacity upgrades are the usual trigger points.

Searching only for grease trap cleaning finds service contractors. Specifying hardware for a kitchen needs a correctly sized trap and an AU supplier who can quote and support the product.

GRAF products prepared for Australian delivery
Commercial arrestors supplied through GRAF Australia and trade partners.

GRAF grease product family

Under-sink grease traps suit light or compact installs. Grease Buster is an above-ground option where pit installs are constrained. Sapphire Grease Trap and Grease Arrestor SC cover larger commercial kitchen loads with access for maintenance.

Pair arrestors with the wider trade waste range (including SC Super Compact pretreatment) when the authority requires more than FOG separation alone.

Sizing, cleaning access and compliance

Size from peak flow and fixture counts, not floor area alone. Undersized traps overflow, smell and fail audits. Design must leave safe access for pump-out and cleaning.

Send kitchen plans or a fixture schedule with your quote request. GRAF Australia state sales will recommend the right arrestor and confirm lead times.

Recycled plastic feedstock used across GRAF manufacturing
Sustainability story sits alongside compliance-led product selection.

Compare options

Match arrestor type to kitchen duty and install constraints.

ProductTypical useNotes
Under-sink grease trapLight / compact FOG loadsOften too small for busy commercial kitchens
Grease BusterAbove-ground where pits are hardCheck access and authority acceptance
Sapphire Grease TrapMainstream commercial kitchensCommon project specification path
Grease Arrestor SCHigher capacity commercialPair with trade-waste pretreatment when required

Specify these products

Frequently asked questions

What is a commercial grease trap?+
A commercial grease trap (grease interceptor or grease arrestor) captures fats, oils and grease (FOG) from kitchen wastewater before discharge to sewer. Australian food premises often need one to meet trade waste and council requirements.
Which GRAF grease traps are available in Australia?+
GRAF Australia supplies under-sink grease traps, Grease Buster (above ground), Sapphire Grease Trap, and Grease Arrestor SC. Selection depends on kitchen size, peak flow, install location and trade waste authority rules.
Sapphire Grease Trap vs Halgan: which should I specify?+
Both appear in Australian commercial kitchens. Specify against hydraulic load, footprint, access for cleaning and the approving authority. GRAF Australia can size Sapphire and related arrestors for your project.
Do I need a grease trap for a cafe or restaurant?+
Most commercial food premises that discharge FOG-contaminated wastewater need an approved grease arrestor. Confirm with your plumber and the local water authority.
What size grease trap do I need?+
Sizing follows fixture units, peak kitchen flow and authority sizing rules. Share kitchen plans or fixture counts with GRAF Australia for a recommendation.
Grease trap cleaning vs buying a new trap+
Cleaning keeps an existing trap compliant. New fit-outs and capacity upgrades need a correctly sized arrestor from GRAF Australia, not only a cleaning search.
Where do I buy a grease trap in Australia?+
Request a quote at grafaustralia.com.au or call 1300 131 971. Trade partners may stock selected lines.
Is a domestic under-sink trap enough for a commercial kitchen?+
Usually no. Commercial kitchens typically need Sapphire, Grease Arrestor SC or similar capacity with correct cleaning access.

Need a commercial grease trap quote?

Send kitchen plans or fixture counts. Call 1300 131 971 or use the quote form.

Request a quote