Step 3 - Check inside the gully. The outer wall is corrugated providing excellent structural strength which reduces the possibility of on-site damage. 12. 80075 Series 450D Stormwater Pit with Galvanised Grate 80073 Series 450S Stormwater Pit with Galvanised Grate 21041 Series 450 Galvanised Steel Grate 97848 Series 450. The velocity around the silt trap is comparatively higher in magnitude to the velocity inside the trap during high and low tides. Sri Lanka is an oceanic tropical island in the Indian sub-continent and located at 5°54′–9°52′N 79°39′–81°53′E (Fig. Delivery 7 days a week The UK’s. Culinary center wastewater contributed to the addition of organic content in domestic wastewater, as. 300mm sediment catchment. 6LB600. Slow down water velocity, whenever possible, to minimise scouring and the loss of suspended sediments. • This trap is provided to remove silt from the drain before discharging into the house drainage system. Viking Plastics provide delivery and pick up and arrange pump out if required. The 'Bottle' trap, access to clean the trap is by unscrewing the bottom. TAblE 1 Product range Product Code Description Mass (kg) IC3000600 Spun Concrete Silt Trap 53 CI325G Cast Iron Grate 4 16 300 ID 630 360 OD We are the supply partner o choice or ne ealand’s civil construction industry specialising in ater and inrastructure based solutions. Water rises to the outlet pipe, leaves the silt trap and is discharged to a drainage system. 5 Tonne x 300mm Diameter. g. View Everhard Industries' range of commercial & residential stormwater solutions & products including Stormwater Pits, Risers, Pollutant Trap & Accessories. of water for stock water, domestic supply and irrigation. 5 tonnes. Aquacell Silt Trap Bk 500x1250 6lb600 also ordered the following. When sediment is cleaned out from sediment Trap Design A 3 Â 10 m silt trap with 1. A silt trap is a method of preventing silt from entering and damaging a soakaway, attenuation or sewer system. Each domestic. Select Country My PortalSilt-traps are treatment systems designed to capture suspended sediment in drains carrying agricultural runoff thereby reducing sediment accumulation in downstream lake ecosystems. 8. Any build-up of silt at the base of the soakaway can be removed. UCR3). For use with the ACO MultiDrain PPD channel drainage system. For smaller residential. Our robust, chemically resistant Polypropylene and Polyethylene silt traps are available in a in a range of depths and pipe sizes for your soakaway and attenuation requirements. Black. We provide world class customised plastic fabricated products for all types of specialised applications. Best Management Practice: Best management practices should be maintained to ensure a clean network at all times. (1) £18. Main Material . Therefore, the gas appliance does not have any sediment entering the gas chamber. Different sizes of silt traps are appropriate for different soakaway systems depending on the size of the area covered and the expected amount of debris. AdjustaPit™. Search, find and download high-quality BIM content for drainage from our listed manufacturers. In order to prevent silt from entering the tank, clogging inlet pipework and reducing storage capacity, it is recommended that the Domestic Silt Trap (6LB300) or the standard Silt Trap (6LB600) is installed prior to the inlet pipework. Integral Filter Barrier. Choosing the best way to manage sediment particles in well water is in the hands of the family. Catchpits / Silt Traps & Fabrications; Pipe Jointing Lubricant; Road Gullies; Land Drainage. excel project tapware; whitehall ceramic disc; whitehall tapware. UCC5 and UCC450) and risers (e. The primary difference between the different types of silt traps is the size of the area covered by your system. PO Box 104298 Lincoln North, Auckland 0654 +64 (09) 837 2725 [email protected] boxes. Our traps have been designed to filter and collect silt particles that discharge from laboratory or commercial wastes. A silt pit is placed in the floor of a wash-down area for the collection of silt and other solid matter that may be flushed from the wash-down area. Soakaway Crates are quick & simple to install and a variety of size-configurations can be easily formed. 00. Aiming the gas flow straight down pushes anything caught in the gas line into the trap where it cannot enter the appliance gas chamber. Silt Traps and Flow Control. trap after each rainfall event for damage from erosion and to ensure that the trap is draining properly. 00. The design unlike traditional single-wall pipe prevents silt accumulation. Add to my list. Wavin AquaCell domestic silt trap extension piece depth 500mm Catalog code: 6LB301 Product specifications Identification specifications -Catalog code Wavin 6LB301 EAN Number 5011479231777 SAP number 000000000004040292 General specifications. 75. All units are supplied with circular, 35KN (A15) loading access cover, which will take a light traffic loading, such as domestic driveways and gardens, but not in areas that will potentially experience traffic that is over 2. Rusco 1-1/2-250-F Polyester Screened Filter System. Geological Classification. discharge into the sewer system. Hamilton Australia produces a range of silt/plaster traps, or can custom fabricate something to suit your needs. These systems are designed to collect and remove surface water, either by emptying it into the sewer system, or by allowing it to drain back into the ground below. Separation by flotation and settlement. Water Storage. This requires the use of lagoons, settlement tanks or grassy areas that slow the water down enough for the solids to. The range of underground drainage supplies includes a variety of items specifically designed for sub-terrain drainage installation. Add to Cart. 8. Our standard 320mm X 580mm mini silt trap is for 110mm underground surface water drainage systems. Sediments introduced into our rivers cause environmental pollution and increase flood risk and turn our river water brown. Grease Trap Bucket for use with the JFC GT01 Domestic Grease Trap. 1. 6LB600. After Cyclone Idai, the famers of Nyanyadzi quickly came together to clear the blocked section of canal. You must treat silty water prior to discharge to ensure that the silt settles out. A Infrastructure Company This website is owned and operated by Wolseley UK Ltd. 77 inc. For water sources with a large surface area, you may consider a pleated filter that can net substances between 30-500 microns. Marley 110mm x 30m Drainflo Corrugated Drainage Pipe. How do silt traps work? Step 1. Silt traps filter out physical sediment to prevent sediment buildup in the drywell. 160mm diameter. We offer a wide range of domestic silt traps and catchpits to meet your specific needs. Main Material . The road gully is renowned for its dual combination outlet, creating a trap to prevent any unpleasant smells. 820 Drain union - 0056 . domestic silt trap 16/11/2020 17/11/2020 110 en1401 outlet 110 en1401 inlet optional 110 en1401 inlet optional 110 en1401 inlet 110 en1401 inlet 110 en1401 outlet notes: units supplied with 300 pedestrian rated inspection cover and frame. We design a range of catchpits/ silt traps to separate silt and other particles. 7mm. Compliant with E1/AS1 clause 3. of water for stock water, domestic supply and irrigation. 59 £68. Research in NZ has shown sediment traps to be very effective in capturing silt with a capture rate of 70% reported in one large Canterbury trial. Effectiveness Design engineers should construct sediment traps in accordance with design manual specifications to ensure high sediment removal efficiency, generally 50 to 70 percent (Wossink et al. Separators are designed and tested to EN 858-1. Shop products from small business brands sold in Amazon’s store. 5 meters from the boundary. Locally manufactured stainless steel oil/water separators, grease trap, & floor drains. co. Wastewater Traps. Fuel Oil separators made of polyethylene are required where light liquids occur. Fits on the end of a standard Universal or Lockfast Rod and has a rope eye for additional security if required. 15 Rain Fall mm STAGE 1 - Completing Earthworks Catchment Area Total Catchment Area = ha Soil type : =m2Clay/Loam Therefore design wet sediment basin. TCS Silt Fence Premium can be installed as an entrenched vertical entrapment fence and is designed to intercept and detain stormwater run-off, trapping harmful silt through settlement and filtration before it. 9 Distribution Box – Risers / Lid 2. 05. Dux AdjustaPit™ 350mm – Square Grate Only - DA350GS. Wavin Silt Traps help remove harmful chemicals and unnecessary. 1. Straw bales can be placed downstream of works to act as a barrier and may help trap suspended sediment while allowing the water to pass through the bales. 89 £122. For the catchment and removal of silt and debris from roofs and hard standing areas, before entering the surface water drainage system. This type of blockage is easily cleared, using either your hands (assuming you still have the rubber gloves on) or. 2 Temporary Silt Fence 3 Special Sediment Control Fence 4 Temporary Silt Ditch 5 Temporary Diversion 6 Temporary Slope Drain. SD232113-01: Waterflow Measuring Device Detail: PDF. Our most popular models are the Model 10 “Catch Pot” and the Model 40 “Plaster Trap”. Product name. 160mm diameter. There are, of course, many factors that will effect the build-up of oil and silt, for instance, there will be a seasonal variance, also if a site has a silt trap as a part of the drainage solution. Ex Tax:£1,675. Aquacell Domestic Silt Trap Bn 250x750 6lb300 £331. Before entering a drainage system, contaminated water is directed to the silt trap. Our large fleet of specialist waste management. 44. Choose an option 160mm Pipework (standard) Clear. Premier Tech Water & Environment: Rewatec Silt Trap (FST/1) From £ 781. These are pipe extensions that aim gas flow straight down. Perforated land drain is designed to collect surface water and commonly used in agricultural, domestic, commercial and industrial areas. Inspect and replace the drop pipe. POA. 100mm Drainage pit seal. By allowing the fat, grease and oil (FOG) to cool, a grease trap is able to separate the different layers of wastes with water. A gabion is a leaky rock dam wall built in a wadi, valley canyon or water flow, at a point where there would be a. The drum trap is like a metal drum, an essential part of our house plumbing system. 350x200mm riser provides a total of 875mm depth & 60L capacity. £45. 4. Traps are curved bending pipes which can be found underneath plumbing applications in a home, school or office. 1 Temporary Sediment (Silt) Traps Definition A temporary sediment or silt trap is formed by excavation or by constructing a small embankment of stone, stone-filled bags, or other material to retain sediment. The Hynds Precast Concrete Silt Trap Unit is suitable for lawns and patios etc. Small Business. Product Details. Application areas. com or call us on +44 (0) 1296 633033Leave any remaining water in the tank to cool. All ECS Siltceptors will efficiently remove silt and dirt whilst providing a reasonable level of separation of hydrocarbons (oils, greases, petrol’s) which. These design types and associated silt trap facility setups are listed in Table 3. com. A domestic grease trap collects greasy water. 3 Grease Traps – Polyethylene 2. </p><p><br></p><p>There are three types of AquaCell unit. Viking Plastics Engineering Pty Ltd. Domestic silt trap bucket. Not more than one trap shall be permitted on a trap arm. Bucket, for 6LB300 Domestic Silt Trap 200x210mm: Black: 6LB600: Trap, AquaCell Silt 500x1250mm: Black Polypropylene: 6LB622: Trap, AquaCell Silt c/w 225mm Inlet. Utilising a twin extrusion process, the two layers are simultaneously extruded one inside the other and heat welded together in one continuous step. 8 Rainwater Diversion Valve 2. The 300 Silt Trap Chamber has an invert depth of approx 315mm; We offer a wide range of domestic silt traps and catchpits to meet your specific needs. Silt Management; Access Chambers and Manholes; Biological Grease Treatment. Silt traps function by allowing dirty water to enter at a higher level and clean water to exit at a lower level, leaving dirt and silt behind in a removable bucket. Some drywell systems are more complex and involve a silt trap (also known as a catch basin). All construction shall conform to either. Above Ground Settling Tank (Plaster Trap) Fabricated from PVC or 6mm polypropylene for above ground installations. (0) $826 . Trade Sign in or apply for trade prices. Rain Water Gullies and Drains. It is composed of two chambers each measuring 70cm x 50cm x 60cm or 60cm x 60cm x 60cm (L,W,H). In order to prevent silt from entering the tank, clogging inlet pipework and reducing storage capacity, it is recommended that the Domestic Silt Trap (6LB300) or the standard Silt Trap (6LB600) is installed prior to the inlet pipework. Osma UltraRib S/S adaptor to 160mm spigot 150mm 6UR141 Osma UltraRib S/S level invert reducer 150mm 6UR099 OsmaDrain S/S level invert reducer 110x160mm. These include: for more frequent desilting purposes create a silt trap or settlement pond that can be constructed upstream of the main pond. The main design of the breakwater was geotextile tubes covered with rock armor. area of domestic sewage, surface water runoff from roofs and paved areas within the curtilage of premises, and trade effluent. Designed to hold a small amount of water which then works to prevent harmful sewer gases and bacteria entering a room or building, while also allowing wastes to pass through. The uncontrolled build-up of coarse sand and silt particles in your rainwater management system can soon reduce the overall efficiency of your system. To prevent this, farmers in the Creightons Creek area are learning how to build silt traps to stop the rubbish flowing into dams. As rainwater enters the unit, the silt and other ground solids held in the water, fall into the bucket. 99: Wavin Aquacell Eco Inf. £15. 70 inc VAT, Each. Silt traps typically include a filtration bucket to separate solids. These can also be used for finer filtration of. £397. Silt bucket is lined with white perforated sheet to collect silt particles. Volume - 21000 CCM. This cookie is set by GDPR Cookie Consent plugin. Everhard Industries Class B Stormwater Pit Grate - To Suit 900 x 900mm Pit. Suitable for a wide range of applications. Viking Plastics has 50 years of expertise as a specialist in plastic fabrication. Sumps & Traps. Silt and sediment control on construction sites What you must do. SKU: S300RISE. Polypropylene Construction. Wavin Silt Traps help remove harmful chemicals and unnecessary. A strong and durable alternative to standard plastic silt traps. Compare. The lid is easily removed to gain access to the grit collection bucket. but mostly no. A silt trap is a ‘basin’-type device that is placed in the upstream of a soakaway crate. Click the image above to learn more about patio drainage options and tips from ACO. As each individual SuDS system is different, they are individually fabricated to take into account water flow rates and ground conditions that differ from site to site. Silt Fences and Super Silt Fences are considered a temporary measure for trapping sediment-laden runoff from small catchments of usually less than 0. menu. 63. Direct download. 06 £196. 10. VAT | € 1,228. 00 ex. The standard cost of delivery* is included with this product, however offloading is the responsibility of the customer. Our range include bottle gullies, gully traps and square hoppers. Caroma 50mm Adjustable 60 - 225mm Cap And Lining (0) $12. Excavated tanks for rainfall storage are common in the southern agricultural areas of Western Australia. B. 3 Technical design criteria 3. 5011479194195. Marshalls Civils & Drainage has developed a range of Offsite Solutions catchpit and silt trap manholes so why spend days constructing an in-situ a catchpit or silt trap manhole on site when one-piece chambers are available and can be installed within hours, not days! The reinforced watertight one-piece chamber structures offer greater design. A soakaway must be 2. This will take around 30 minutes, or up to 60 minutes – 2 hours for a larger tank. Each plumbing fixture shall be separately trapped by an approved type of liquid seal trap. Wrap and overlap the geotextile covering the entire AquaCell structure, to protect the geomembrane. DP350X700RS2 includes half syphon with removable access cap. A silt trap is a designated area where water that is contaminated with suspended sediment can settle to the bottom of the trap until it can be removed. What silt trap will I need? The type of silt trap is dependent on the size of your water storage system, as well as your environment. Silt bucket is lined with white perforated sheet to collect silt particles. Price. Aquacell Core Inf. Premier Tech Water & Environment: Rewatec Silt Trap (FST/1) Large quantities of silt can be associated with wash down areas. Silt-traps Mudtanks Freephone 0800 502 112 sanitation design guide v . Interceptor traps were originally installed to prevent sewer air from venting within domestic systems at a time when the authorities were unsure of the health risks and dangers that this foul air may carry, even at the time there were those who opposed the installation of the traps because they cause waste matter to sit in the outlet of a chamber until the next flush. 5 m height will be set up to control the inflow of sediments into the pond; the silt trap also has a shutter to prevent the first flush run off from the. Extend the bund beyond the edges of the silt trap to ensure no water flows around the outside of the bund, missing the silt trap. • Transportation of these silt particles requires higher velocity and steeper slopes. Making Sediment Traps Domestic quality PVC Drainpipe can be easily cut to any size with a bandsaw or jigsaw. Add to cart. Once the water velocity reduces to a certain level then the fine sediment in the water column drops out to the bottom of the sediment trap. Domestic silt trap extension piece, depth 500 mm. Underground drainage systems are made from uPVC for. € 999. 1. The build-up of silt and dirt from vehicles is a major problem particularly from washdown facilities and we are offering the Siltceptor Range to meet the requirements of these guidelines. A silt trap is a basin device that is set upstream of a soakaway crate and its purpose is to prevent any kind of silt, soil, sediment, metals or pesticides from entering your water storage system by containing water in the trap for some time and allowing these unwanted materials to settle to the bottom of the bucket and separate from the water. 2. Diameter . Silt trap with 160 mm OsmaDrain inlet. The Silt Guard 300 Series is designed for installation upstream of medium to large volume, cellular/crate-attenuation systems, ponds, swales and irrigation systems. Traps. com. These use a geotextile fastened to post or a wire fence (e. 75: 6lb600 Wavin 500mm Silt Trap 1. trap after each rainfall event for damage from erosion and to ensure that the trap is draining properly. The road gully is an important component of your surface water drainage system that can prevent any sediments from entering the system. B4750 – 450mm x 750mm. The domestic grease trap minimises pipe blockages by reducing the amount of grease (and other fat/oil based substances) entering the drainage system. Sand and larger silt particles will settle out reasonably quickly, however clay and fine silt will take much longer (a number of weeks). Shop our wide range of drainage at warehouse prices from quality brands. 3 Electrical Pits 2. Catalog code Wavin. 7. This is how silt traps work: slow the influent. Wavin manufacture a range of sizes depending on the catchment area. 143 Woodlands Drive Braeside, Victoria 3195. Delivery. Silt Traps 36 Ancillaries 37-38 Spares 39 Contents AquaCell Systems. Waste water enters the trap from sourse (eg a kitchen sink). A paint collection tank is designed for the collection of acrylic and oil based paint residue as well as solvents. Wavin AquaCell domestic silt trap extension piece depth 500mm. AQA. Home / Drainage Solutions / Silt Management / ETSG 1 – Silt Trap – Drainage area 5500 sq. 65 ex. For large reservoirs, the size of the sediment trap has to be increased to accommodate huge amounts of run off water. They separate oil from water, and safely retain the oil until it is removed. Product Details. Grit / Sludge Traps. 05 £331. 54: Aquacell Domestic Silt Trap Bn 250x750 6lb300 £331. £ 2,099. AdjustaPit™. Waste water enters the trap from source (for example, a kitchen sink). Jaybro's friendly customer service team are here to assist you in finding the right product for your application. Straw Bales. shop now. au. As the silt trap fills up with water, silt settles at the. In order to prevent silt from entering the tank, clogging inlet pipework and reducing storage capacity, it is recommended that the Domestic Silt Trap (6LB300) or the standard Silt Trap (6LB600) is installed prior to the inlet pipework. Catalog code Wavin. chain link fence; Figure 1). Please allow 2-3 working days for delivery. The Gully Guard™ system is an environmentally friendly silt trap; an inexpensive, low maintenance and reusable engineered solution that assists in the prevention of blocked gullies, surface flooding and watercourse contamination due to silting and debris build-up. JFC GT01-L – Domestic Grease Trap Cast Iron Cover Cast iron, pedestrian duty cover for use with the JFC GT01 Domestic Grease Trap. PP. Usually petrol stations, car washes and vehicle repair garages. EAN Number. A masonry chamber works like a grit chamber that shares the silt, sand, etc. For small, domestic soakaways, the following method can be used or adapted to suit the site requirements. A Triple Interceptor is also known as a Food and Oil Interceptor or Grease Trap. PBSL Group give a brief video of their inline silt trap or sediment trap, ideal for installation with soakaways. What is silt trap and how does it work? A silt trap is an area, like a shallow trench, where run-off from fields or tracks is detained. Geotextile silt fences. 11 months. Highly Respected. The units have identical dimensions but are manufactured to perform. At the appliance connection point, there usually is a sediment trap or dirt pocket, sometimes called a drip leg that includes a nipple and a cap. W1-100 Single Chamber 1-stage Wash Down and Silt Separator – 10,000 litres. Connecto Trade®. The main outlet has the option of a 150mm twinwall pipe connection. Compare. 5 acre/100 ft of flow, perimeter dikes may be used to. • Risk of water seal breaking in the trap is high because of induced siponage. PVC-U/Polypropylene. The inlet to the dam is made of 3 holes. auWe offer an extensive range of Silt Traps and Catchpits for surface & storm water drainage. 1020mm or 1530mm Depth. The GT02 is a fully contained 3 chamber unit which includes dual collection buckets and galvanised lids. They prevent solid waste e. The source for all types of gravity drainage, sewer installation and pressure pipe systems in any private or public development. Domestic Silt Trap Extension Piece: 500: 250: 250:. £31. 5 mm holesRELN Domestic Traditional Pits Product Review. Silt trap with 300 mm TwinWall inlet. This improves the quality of water before it is reintroduced back into the drainage system. Wavin Osma is the reference for residential and commercial drainage systems. BY CAPACITY / POPULATION. A domestic well can cost between $5,000 and $10,000. Silt traps. Here’s a video that teaches you how to make six classic traps: the Ojibway bird snare, the Paiute deadfall, the figure 4 deadfall, the wynn double-wishbone deadfall, the T-bar snare and the fishing gorge hooks spring pole. Wavin AquaCell domestic silt trap extension piece depth 500mm 6LB301 Wavin AquaCell flange adaptor to UltraRib 150mm 6LB104 Wavin AquaCell flange adaptor to UltraRib 225mm. 44: Aquacell Plus Inf. Still, a trap’s performance Aquacell domestic silt trap bn 250x750 Wavin : £331. EAN Number. ETST 100 & 200 silt traps will Improve water quality downstream of the unit by removing silts, debris, and litter Delivered ready to install, reducing installation time and costs Quick and simple to install, is lightweight and can be lifted and installed by a single person There are two models in the range – 100 litre and 200 litre. The benefits of the silt fence are increasingly becoming recognised in Britain: The Environment Agency/SEPA Pollution Prevention Guidelines (PPG5) now recommend the use of silt fences to reduce. Look for a lock or as an added precaution. Telephone 0844 5561818 calls are charged at 7p per minute PLUS your telephone network will charge you which can be significant. Step 4: Return the trap into its place. Domestic machines (equal to or less than 10Kg in size per machine) • For one or two domestic machines, each machine is fitted with a lint trap. Please contact the Sales team on 01773 767611 for further details. Silt traps. The 'Bottle' trap takes up less space under a waste outlet and is ideal for pedestal mounted basins where space is usually very limited. Wavin attenuation solutions give you maximum control over stormwater discharge. . 110mm Rectangular Hopper Head. Connections to Domestic Water Booster Heater: PDF. Silt Trap . Nelson catchpit Nelson catchpit Item W D H Weight Sump 1140 660 1200 990 * Manufactured in Nelson for Nelson City Council. Gully Traps. 6. 16. 05 £331. The tried and tested Polystorm geocellular range is designed to provide retention, attenuation or infiltration at a variety of depths. allow contaminated water full of silt/contaminants to settle. cart: 0 items. 00. After the baking soda, pour white distilled vinegar in the drain. ETSG 3 - Silt Trap - Drainage area 16500 sq. Washdown and silt traps can be used in areas such as car. 5011479231760. The Soakaway Boxes are manufactured to the same exacting standards as other high-quality brands such as the Wavin Aquacell crates. Yard Gully Set with Silt Bucket and Ductile Iron Grating - 12. Wavin AquaCell domestic silt trap 250mm depth 750mm 6LB300 Wavin AquaCell domestic silt trap bucket 6LB302 Wavin AquaCell domestic silt trap extension piece depth 500mm 6LB301 Wavin AquaCell silt trap with 160mm OsmaDrain inlet 6LB600 Wavin AquaCell silt trap with 225mm TwinWall inlet 6LB622 Wavin Sewer Bottle Gully Riser 110mm 4D916 Some drywell systems are more complex and involve a silt trap (also known as a catch basin). It is installed to take wastewater from upper floor toilets, baths and sinks into the underground drainage. Description. Step 2. 315mm uPVC Silt Trap complete with filter bucket. This innovative product operates on the principal of gravity separation. It is designed to catch. Designed to intercept silt and solids upstream of Rainwater Harvesting and Flood Management systems the ETSG range is equally at home in vehicle wash applications. In areas where sheet flow leaves the site and the drainage area is greater than 0. Viking Plastics domestic grease traps are available for above ground (under the sink) and below ground installations. Dwv System S&P Polypropylene Combination Trap 40mm. 75: 6lb600 Wavin 500mm Silt Trap 1. PO Box 104298 Lincoln North, Auckland 0654 +64 (09) 837 2725 orders@aqualine. This innovative product operates on the principal of gravity separation. Add to Basket. 082 697 5289 shaun@alltrap. 06th November 2020. Storm Drain™ Garage Pack - 3. This will take around 30 minutes, or up to 60 minutes – 2 hours for a larger tank. A manhole cover is not supplied with this product. this material will settle. 5m deep and comes with 3x 110mm connections. We offer 24-hour emergency response services whether it involves a grease trap leak or a major spill. New Zealand’s original height adjustable silt pits are faster to install than traditional pits and require no pit adjustment call-backs. The typical thickness of the gravel pack is 4 to 6 inches. Designed for the catchment of silt & solids in stormwater systems, the chambers are water tested and supplied with seals as a fully water tight chamber.