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Filtration Support Gravel, 3-5mm nominal size suitable for industrial, recreational, pond and swimming pool water filters

Pack size: 15kg

Gravel Size: 3-5mm

Description& Application:
A natural washed and closely graded support gravel suitable for industrial, recreational and swimming pool water filters.

Prior to ordering:
The volume of support media required will vary with make and capacity of the filter, please check manufacturers recommendations.

Filtration for Non Filtration Specialists:
Pools, spas and ponds require water to be filtered (and as appropriate disinfected) to provide safe places for recreation and livestock. Poor maintenance can lead to clogged filters which can increase the risk of water borne infection.

Typically water filters contain clean closely graded silica sand often carried on a bed of filter support gravel. A pressure fed sand filter or "high rate" sand filter, which is generally located immediately after the pump will typically remove particles down to 10 microns in size (ten thousands of a millimetre).

Water is pumped under pressure into the top of the filter and leaves at the bottom. On the way through suspended dirt and debris in the water is trapped by the particles of sand.

Sand filters need to be cleaned regularly. By re-directing water back up through the sand bed and out to waste, accumulated dirt is flushed out, this is process is called back washing. Sand filters come with a valve known as a multiport valve to change the direction of water flow and to facilitate this process.

Sand media needs changing every three to five years, however, also be aware of a phenomena known as chanelling. This is where water cuts channels in the sand leading to a loss in filter efficiency an again will require the media to be replaced.

Price Promise:
All prices shown include VAT - There are no hidden charges on checkout. This price option applies for personal collection from our Rugeley based depot (WS15 3HF) it does not include delivery.

Design Specify: 3-5mm Filter support gravel from Specialist Aggregates.

Product Code: 2640F

Orders placed for personal collection: You will be advised your collection reference by e-mail. For personal collection orders placed by telephone (01 889 580660) our staff will be able to provide an immediate collection reference.

Personal collection is from: Specialist Aggregates, Unit 5 Rydal Estate, Colton Road, Rugeley, Staffs WS15 3HF.

Collection Logistics: Aggregates will be supplied in easy to handle recyclable plastic packaging. Rocks and boulders will be supplied loose. Products will be loaded as appropriate by hand or using mechanical means into customer's vehicles.

Personal collection times: Monday to Friday 10.00 am to 12.30pm - 2.00 pm to 4.30 pm. Price quoted for this item relates to personal collection only. Extra-over charge for collection by customer arranged courier £15.60 per pack (inc VAT).