









OV Supplies · OVS-GT-18
A stainless grease interceptor that sits under the sink and catches fats, oils and grease before they reach the drain. It is rated for about 18 kg of grease between clean-outs, has a sludge basket for solids and a faucet for draining. Arrives fully assembled with 48 mm inlet and outlet.
Free delivery to most addresses in NSW, ACT, Victoria, Queensland, South Australia and Western Australia; enter your postcode at checkout to confirm. We do not deliver to Tasmania or the Northern Territory yet. Dispatched within 1 to 2 business days. Return within 30 days in the original packaging for a full refund.
Set it under the sink with the inlet toward the sink waste and the outlet toward the drain, connect both 48 mm lines, fill it with water, latch the lid. It comes fully assembled. The connection to the sewer line is plumbing work and your council may want the install recorded.
A commercial kitchen that drains to the sewer needs a grease trap. This one fits under the sink and holds a fortnight of it.
Hot dishwater carries fat as a liquid. Somewhere down the pipe it cools, sets and narrows the drain until one day nothing gets through. A grease trap gives that fat somewhere to cool and float before it reaches the pipe. Water comes in the side, slows down through a triple-path filtration design, the grease rises to the top and the solids drop into the sludge basket, and the clean water leaves through the outlet.
This one is 1.2 millimetre stainless and is rated for about 18 kilograms of grease before it needs emptying. The lid has a rubber ring and buckle locks on both sides, the outlet is threaded, and there is a faucet for draining it down before a clean. It arrives assembled, has a handle on top, and weighs 11.35 kilograms empty.
What this usually leaves the warehouse with.

Waste water enters through the side inlet and slows down through the triple-path filtration design. Slow water lets fat rise and grit sink. By the time water reaches the outlet it has left its grease floating on the surface and its solids in the sludge basket. Nothing moves; there is no power and no consumable filter.

A grease trap is only as good as the person emptying it, so this one makes that easy. The lid has buckle locks on both sides with a rubber ring underneath, the sludge basket lifts out, and a faucet lets you drain the water level down before you scoop. The body is 1.2 mm stainless, so it takes a scrubbing brush and hot water without corroding, and the rounded corners do not cut hands.

Under the prep sink or the dish sink, on the line before the floor waste, with the sink waste into the side inlet and the outlet to the drain. Both fittings are 48 mm and the outlet is threaded. The 600 by 400 footprint fits under most sink cabinets and free-standing sinks. It arrives fully assembled, so the plumber's job is two connections and a fill.
Flow rate is water through the trap; grease capacity is how much it holds before it needs emptying. How fast it fills depends on the kitchen.
The 18 kg side-inlet trap suits one prep or dish sink and a dishwasher. If more than one sink shares a line, size up or fit one per line.
| Item | Size | Capacity | Weight | Price inc. GST | Availability |
|---|---|---|---|---|---|
| Grease trap, side inlet | 600 × 400 × 390 | 18 kg grease, 38 L/min | 11.35 kg | AU $389 | Back soon |
| Oil caddy, 30 L | For fryer oil, which should never go down the sink | 30 L | AU $189 | In stock | |
| Prep sink, 533 mm bowl | The sink most often plumbed through this trap | 60 L | — | AU $609 | Back soon |
Fully assembled; no assembly required.
If the kitchen prepares food commercially and drains to the sewer, almost certainly. Water authorities in every state require grease to be intercepted before it enters their pipes and can fine premises that block a main. Check with your council and water authority for the size they want; many accept an under-sink unit for a small cafe.
When the grease layer builds up; a common rule is about a quarter of the depth. How fast that happens depends on the kitchen, so check it weekly at first and set a day for it. A trap that is not emptied stops trapping.
Drain some water off through the faucet, unlatch the lid, lift out the sludge basket, scoop the grease into a sealed container for the bin or a waste contractor, rinse the inside with hot water, refill and latch it shut. Wear gloves.
Not while the lid is sealed and it is emptied on time. The rubber ring and buckle locks keep it closed; a smell means it is overdue for a clean-out or the seal is sitting on grit.
No. Used fryer oil goes in the oil caddy and off to a recycler, never down a sink. The trap is for the fat that comes off plates, pans and dishwater, not for disposing of oil.