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Filter Sand and Gravel

Highly spherical shape and uniform grading provide our Filter Sand and Gravel with reliable performance

DESCRIPTION

Filter Sand and Gravel are naturally occurring, river washed, glacial deposit products. Their excellent chemical properties – high in silica content and low in soluble calcium, magnesium and iron compounds – meet AWWA-Bl00-96 specifications. Precision sizing and uniform grading to close limits meet the rigid specifications of professional engineers throughout the world.

For over 80 years our Filter Sand and Gravel have been satisfying the requirements of industrial, municipal and residential users. These products have been specified and used nationally and internationally because of their high quality, desirable chemical properties, color, and wide range of precision sizing.

Processing and regular analysis of production are supervised by registered professional engineers.

Our Filter Sand is graded specifically for water filtration plants. It can be used in municipal, industrial or residential applications for sediment filtration.

Our uncrushed Gravel has a highly spherical shape that promotes good flow and even distribution in support beds. Gravel is low in soluble impurities and it will maintain the quality of the treated water, especially in softeners. Three inch layers are recommended in graded support beds.

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ADVANTAGES

Our Filter Sand is graded specifically for water filtration plants
Filter Sand can be used in municipal, industrial or residential applications
The spherical shape of uncrushed gravel promotes good flow and even distribution

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PHYSICAL PROPERTIES

Filter Sand
Color: Light tan to reddish brown
Density: 100 lbs./cu. ft.
Mesh Size: 18×35*
Effective Size: 0.45-0.55 mm*
Uniform Coefficient: 1.6 or less*
Acid Solubility: 0.3-1.6%
Specific Gravity: 2.65-2.75
* All physical properties and conditions for operation are the same for gravel with the exception of mesh size, effective size and uniformity coefficient.

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CONDITIONS FOR OPERATION

Filter Sand
Bed depth: 18-30 in.
Freeboard: % of bed depth (min.)
Backwash flow rate: 15-20 gpm/sq. ft.
Backwash bed expansion: 20% of bed depth
Service flow rate:
Municipal: 1.5-2 gpm/sq. ft.
Industrial: 3 gpm/sq. ft.
Domestic: 5 gpm/sq. ft.

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FLOW RATE
Service Flow Pressure Drop and Backwash Bed Expansion charts to be added later. Check back for updates.

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ORDER INFORMATION

Part No.

Description

Cu.Ft./Bag

Wt./Cu.Ft.*

Bags/
Pallet

Weight/
Pallet

Pallet Dim.

A8071

Filter Sand
(0.44-0.55 mm)

1

100 lbs.

30

3050 lbs.

42″x40″x45″
A8072 #20 Flint
1

100 lbs.

30

3050 lbs.

45″x41″x40″
A8072-01 #20 Flint
.5 (50 lbs.)

100 lbs.

40

2050 lbs.

42″x40″x30″
A8073 1/4 x 1/8 Flint
1

100 lbs.

30

3050 lbs.

42″x40″x44″
A8073-02 1/4 x 1/8 Flint
.5 (50 lbs.)

100 lbs.

40

2050 lbs.

42″x40″x30″

A8074

1/2 x 1/4 Flint

1

100 lbs.

20

2050 lbs.

42″x40″x28″

A8075

3/4 x 1/2 Flint

1

100 lbs.

20

2050 lbs.

42″x40″x28″
A8076 1 x 3/4 Flint
1

100 lbs.

20

2050 lbs.

42″x40″x28″

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STANDARDS
Drinking Water Treatment System Components Classified by Underwriters Laboratories Inc.® in Accordance with Standard ANSI/NSF 61-(1991)-57Y3.

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Filter Sand and Gravel are more fine media from Clack Corporation.