Grease Arrestors
An approved-design commercial grease trap that’s easier to install and won’t corrode. Built on our certified underground tank platform, with the documents ready for your trade waste application.
Available in 2,000L, 3,000L and 4,000L.
- Approved design
- Better value
- Backed by the maker
Polymaster Grease Arrestors
Browse Our Range of Grease Arrestors
Your water authority sets the minimum size from the fixtures connected or the peak flow.
Most plumbers call them grease traps. Water authorities call them grease arrestors. They’re the same thing. All three are standard models, with the baffle, 100mm inlet and outlet, and vent fitting factory-fitted. Order through your local plumbing reseller.
| Code | Product | Capacity | Length (mm) | Width (mm) | Weight (kg) | ||
|---|---|---|---|---|---|---|---|
 | GT2000 | 2,000L Grease Arrestor Tank | 2,000L | 2500 | 1639 | 240kg | |
| GT3000 | 3,000L Grease Arrestor Tank | 3,000L | 2500 | 1639 | 240kg | |
| GT4000 | 4,000L Grease Arrestor Tank | 4,000L | 3519 | 1639 | 340kg |
2,000L Grease Arrestor Tank
GT2000
3,000L Grease Arrestor Tank
GT3000
4,000L Grease Arrestor Tank
GT4000
The GT2000 and GT3000 share the same tank. A higher outlet gives the GT3000 1,000L more operational capacity. Height varies with the riser used. Weights and dimensions are approximate.
Options: Risers up to 550mm, cut to length. Class D heavy-duty lids available for trafficable areas.
Not sure which tank is right for your property?
Our team can help you match a model to your water authority’s sizing. Call us on 1800 062 064 or use the instant quote tool above.
Grease Arrestor Applications
Where Are Grease Arrestors Used?
Commercial kitchens and food businesses must pre-treat trade waste before it reaches the sewer. Polymaster’s range covers cafés, restaurants, pubs, clubs and institutional kitchens.
Cafés, Restaurants and Takeaway
The everyday fit-out. Food premises need a grease arrestor before trade waste can connect to the sewer.
Your water authority sets the minimum size, and you choose the GT model that meets it.
Pubs and Clubs
Bigger kitchens, more fixtures, more flow.
The GT4000 gives 4,000L of operational capacity for higher-volume kitchens, where the authority’s sizing calls for it.
Institutional Kitchens
Aged care, childcare and school kitchens.
On larger developments with a hydraulic consultant, named GT models come with drawings, a design compliance statement, certification and test records to support the specification.
Regional Food Businesses
Bakeries, service stations and roadhouses in regional and peri-urban towns.
The baffle and connections come factory-fitted and it’s delivered by our own fleet, so the job doesn’t stall over a missing part a fair way from anywhere.
Highest Quality and Standards
Tank platform certified to AS/NZS 1546.1 and independently witness tested.
10-Year Warranty
Poly tank and HDPE / PVC internals, so there’s nothing to rust.
Australian Made
Made in Australia, where we’ve been manufacturing polyethylene tanks since 1994.
Certified Platform
Certified to AS/NZS 1546.1:2008 (BSI Benchmark). FEA assessed and witness tested.
WHY CHOOSE POLYMASTER
Approved design, in the ground and off your list.
The hard part of a grease trap isn’t the hole. It’s the sign-off. So that’s where this range starts.
Polymaster Grease Arrestors are built on our certified underground tank platform and made in Australia, where we’ve been manufacturing polyethylene tanks since 1994. Here’s how the GT range deals with the things that hold up a grease trap job.
Every model comes with drawings, a design compliance statement, certification and test records, ready to attach to your trade waste application. Check compliance with your local water utility before installation.
FEATURE POINTS
Why Choose Polymaster Grease Arrestor
There is a lot to consider when choosing an on-site wastewater system. Here is what sets Polymaster apart.
Approved design
- Built to an approved design*
- Drawings, design compliance statement, certification and test records ready to attach.
- The product won’t be what holds up your application.
*Check compliance with your local water utility before installation.
Better value
- An established Australian brand with over 30 years in the industry.
- Priced to leave room in your quote.
- No compromise on design, certification or support.
Backed by the maker
- Answers from the people who design, make and deliver it.
- Our own project team behind every order.
- Support through the application, delivery and installation.
Fewer surprises
- Standard models, so there’s no customisation to wait on.
- Baffle, 100mm inlet and outlet, and vent fitting come factory-fitted.
- Made in our own factory and delivered by our own fleet.
Easier to install
- Approx. 240kg to 340kg, so it goes in without a crane.
- Poly tank and HDPE / PVC internals, so there’s nothing to rust.
Easy to service and inspect
- 541mm access ports reach the full volume, with separate grease and sludge zones.
- No power, chemicals or moving parts to maintain.
- Capacity decal and stainless steel ID plate for on-site inspection.
Supply and Scope
What's Supplied, and What You Provide
Standard models, with the baffle and connections factory-fitted. Here’s where our supply ends and the plumber’s work begins.
Supplied
- Tank with factory-fitted baffle and internal pipework
- 100mm PVC inlet and outlet
- Uniseals on every pipe connection
- Access lids
- Air-tight screw cap
- 50mm vent fitting
- Capacity decal and stainless steel ID plate
Options
- Risers up to 550mm, cut to length
- Class D heavy-duty lids for trafficable areas
Plumber Provides
- Vent pipework to above the roof line (air admittance valves aren’t permitted)
- Disconnector gully
- Backflow prevention where required
- Final sewer connection
All to the local water authority’s requirements.
Switching from concrete?
Where a site is still designed around precast concrete, a 240kg to 340kg poly unit goes in without a crane, and polyethylene resists the acid attack that eats concrete traps.
How a Grease Arrestor Job Runs
A typical below-ground grease arrestor job, from sizing through to servicing.
Step 1 — Size to the Water Authority's Calculation
Each authority sizes grease arrestors from the fixtures connected or the peak flow. Choose the GT model that meets its minimum. Don’t oversize just to be safe. A trap that’s too big for the flow can sit stagnant and smell.
Step 2 — Lodge the Trade Waste Application
Attach the drawings, design compliance statement, certification and test records. Check compliance with your local water utility before installation.
Step 3 — Order Through Your Plumbing Reseller
Standard models, so there’s no customisation to wait on. Our own project team is behind every order, through the application, delivery and installation.
Step 4 — Delivery to Site
Made in our own factory and delivered by our own fleet, with delivery to site.
Step 5 — Excavation and Placement
Excavate to local and NCC requirements. At approx. 240kg to 340kg, the unit goes in without a crane.
Step 6 — Risers and Lids
Fit optional risers (up to 550mm), cut to length to suit the installation. Fit a Class D heavy-duty lid where the area is trafficable.
Step 7 — Connections and Venting
Connect the 100mm inlet and outlet using the supplied uniseals. Run the vent from the 50mm vent fitting to above the roof line. Fit the disconnector gully, backflow prevention where required, and the final sewer connection.
Step 8 — Inspection and Pump-Out
The capacity decal and stainless steel ID plate let inspectors confirm the unit on site. The business has it pumped out by a licensed liquid waste contractor on the schedule set in its trade waste agreement.
Polymaster Grease Arrestors must be installed underground by a licensed plumber in line with the latest AS 4766, local authority requirements and Polymaster’s installation guidelines for underground tanks. Final sewer connection and vents are to water authority requirements.
DELIVERY AND DISTRIBUTION
Delivered to Site by Our Own Fleet
Made in our own factory and delivered by our own fleet. Within Zone 1, delivery is free to your local reseller’s store, or $165 inc GST to site.
Preparing Your Site
Truck and trailer clearance required is 19 metres long, 5 metres high, and 3.5 metres wide. Check for low branches or powerlines on your access route and ensure your gate and entrance can accommodate a 19m truck and trailer. A flat, clear area of at least 5 metres by 5 metres is required for unloading. Our logistics team will contact you approximately seven days before delivery to confirm your address and access requirements.
GREASE ARRESTORS IN THE FIELD
Let's discuss your project.
Talk to our team. We’ll help you match a model to your water authority’s sizing, get the documents to your client or consultant, and sort the risers and lids for your site.
More Wastewater Solutions From Polymaster
Explore Our Full Wastewater Range
Grease arrestors are one part of Polymaster’s wastewater range. If the job also needs a septic tank, pump well or sewage pumping station, we’ve got you covered.
Pump Wells
Polymaster poly pump wells are designed for the collection and pumping of wastewater and stormwater where gravity drainage is not possible. Available in a range of sizes to suit residential and light commercial applications.
View Range
Sewage Pumping Stations
For black water and grey water applications requiring a complete pump station system, Polymaster’s range covers both domestic and light commercial requirements. Available in stormwater/grey water and sewer/black water configurations.
View Range
Water Tanks
Polymaster’s water tank range, from slimline residential tanks to underground rainwater harvesting systems, is the natural complement to any wastewater solution on your property. Store the water you collect, manage the water you discharge.
View Range
FAQs
Frequently Asked Questions
Everything you need to know about Polymaster’s grease arrestor range, from sizing and approval through to installation and servicing.
What's the difference between a grease arrestor and a grease trap?
They’re the same thing. Grease arrestor is the term water authorities use, and it’s our product name. Most plumbers and business owners call it a grease trap, so we use both.
Is it approved for trade waste?
It’s built to an approved design. Approval for each installation comes from the local water authority through the plumber’s trade waste application, and the drawings, design compliance statement, certification and test records are ready to attach.
Why choose Polymaster over other poly grease arrestors?
It’s built to an approved design on a certified, witness-tested tank platform, and priced below the other poly grease arrestor brands. You buy it through your local plumbing reseller, backed by the people who design, make and deliver it, so you’ve got a team to call from enquiry through to installation.
Which size do I need?
The water authority sets it. Each authority sizes grease arrestors from the fixtures connected or the peak flow, and you choose the model that meets its minimum: GT2000 (2,000L), GT3000 (3,000L) or GT4000 (4,000L). Don’t oversize just to be safe. A trap that’s too big for the flow can sit stagnant and smell.
Is poly really as strong as concrete underground?
Yes. The tank platform is certified to AS/NZS 1546.1:2008 and has been independently assessed by finite element analysis for soil loading. It’s passed witness testing too, including 510kg on the lid for an hour with no deflection, plus water tightness and lateral load testing. It’s backed by a 10-year warranty.
Can it go under a driveway or car park?
The standard poly lid suits pedestrian and non-trafficable areas. For driveways and car parks, fit the Class D heavy-duty lid (available as an accessory) or an independently supported trafficable cover, as the site’s hydraulic design requires.
What's supplied, and what does the plumber provide?
Supplied: the tank with factory-fitted baffle, 100mm inlet and outlet, uniseals, access lids, air-tight screw cap, vent fitting, capacity decal and stainless steel ID plate.
Optional: risers (up to 550mm) and a Class D lid. The plumber provides the vent pipework to above the roof line (air admittance valves aren’t permitted), the disconnector gully, backflow prevention where required, and the final sewer connection, all to the local water authority’s requirements.
Does it need power, chemicals or maintenance?
No power, no chemicals and no moving parts. It separates by design. The business has it pumped out by a licensed liquid waste contractor on the schedule set in its trade waste agreement.
How do I order one?
Through your local Polymaster plumbing reseller. They’re standard models, so there’s no customisation to wait on. Polymaster delivers with its own fleet. Within Zone 1, delivery is free to your local reseller’s store, or $165 inc GST to site (see the delivery map).