Commercial Products

Pressurised Sand Filters

Pressurised sand filters work by forcing water at pressure through a bed of carefully graded media that collects any dirt and solids present in the water. Sand filters are a versatile addition to a range of aquaculture, aquarium and pond applications as they can be used in conjunction with a variety of media, providing either mechanical or biological filtration or both.

Application	Media Type
Mechanical filtration only	AFM Media
Combined mechanical and biological	Oolitic Sand

Maintenance Tip

Under certain circumstances, hard water or high pH can cause calcification in the sand filter, causing the sand to solidify and reducing the efficiency of the sand filter. Regular backwashing can avoid this. We recommend periodic manual inspection of the sand filter interior and stirring-up the media inside to ensure continuous peak performance.

Flow Rates

Flow rates through pressurised sand filters depend on a combination of factors, including the type of application, type of media and particulate loading:

High particulate loading and biological filtration	15m³/hr/m² of cross-sectional filter area
Medium particulate loading	25m³/hr/m² of cross-sectional filter area
Low particulate loading	40m³/hr/m² of cross-sectional filter area

Lacron High Pressure Sand Filters

lacron sand filter Lacron filters have been designed with performance and durability in mind. The main tank is made from tough, glass-reinforced polyester suitable for use in saltwater and freshwater. The smooth internal surface helps to prevent clogging and maintains efficient water flow through the unit.

The reliable multi-port valve (sold separately) is easy to use and side-mounted to enable easy maintenance of the sand filter interior without disturbing connection pipework.

The large, clear lid provides a view into the sand filter so that the water flow and backwashing can be observed. A pressure gauge (sold separately) can be fitted to the sand filter to indicate when it is time to clean or backwash the unit.

Technical Facts

Both automatic and manual multi-port valves can be fitted to Lacron high pressure sand filters. The maximum pressure rating is 3.1 bar (45 psi).

Lacron Technical Details

Multi-port valves

lacron sand filter multi-port valve Multi-port valves provide a simple method for easily backwashing and rinsing pressurised sand filters. Although it is possible to operate a sand filter without one, they are generally considered an essential accessory.

Automatic multi-port valves are available that mechanise the backwashing and rinsing process, making the sand filter almost maintenance free.The opening and closing of the valve is motorised and controlled by a programmable timer which can be set to the times and duration of your choice. The automatic multi-port valve will even take care of switching the pump on and off during backwashes.

Multiport Valve Technical Details

Sand Filter Spare Parts

A full range of spares and accessories is available for all sizes of pressurised sand filter. Please ask for further details.

Spare Parts Technical Details

Waterco Medium Pressurised Sand Filters

Waterco Medium Pressure Sand Filters utilise the latest thermoplastic moulding techniques to produce a durable, abrasion-proof and low-cost method for efficiently filtering water. It is non-corrosive and suitable for freshwater and saltwater applications. All Waterco sand filters include a top-mounted multi-port valve to enable simple, fast maintenance and backwashing.

A pressure gauge (supplied) can be fitted to the sand filter to indicate when it is time to clean or backwash the unit.

The unit incorporates a large diameter drain port with a removable non-clogging strainer so that it can be easily emptied of just water or both sand and water.

Waterco Filters Technical Details

Technical Fact

Moulded skid bases are available for Waterco medium-pressure sand filters for improved stability. The tank on all Waterco sand filters is covered by Waterco’s comprehensive 10 year conditional warranty and all other components carry a 12 month warranty. All filters are rated to 0.6 – 0.8 bar (8.7 – 11.6 psi).

Commandomatic Carbon Filter System (TCF series)

The TCF series provides a compact, economical and refillable carbon filtration system. Carbon can be used for the removal of organics, phenols, and other toxic substances.

The filter housings are fabricated from high impact polypropylene and are designed for top loading with an easy locking ring system.

• To ensure optimum adsorption of contaminants the cartridge is designed to allow water to enter at one end and flow through the full height of the carbon bed before exiting at the other end of the cartridge.

• Must be used with a suitable mechanical pre-filter to protect the activated carbon granules from dirt fouling the carbon.

• Requires no additional tools for simple cartridge removal and replacement.

• Replacement carbon is available from TMC.

Commandomatic Technical Details