2018 Web Catalog - Page 104



4
Filter Sand & Gravel
Description
Part Number
Suggested Retail
Resins, Media & Chemicals
Filter Sand & Gravel
Red Flint Filter Gravel are naturally- occurring, river-washed,
glacial deposit products. Their excellent chemical properties high in silica content and low in soluble calcium, manganese and
iron compound - meet AWWA-B100-89 specifications. Precision
sizing and uniform grading to close limits meet the rigid spec­i­fi­
ca­tions of professional engineers throughout the United States,
Canada and overseas.
Physical Properties (Filter Sand):
Color...................................................................................light tan to reddish brown
Density..........................................................................................................100 lbs./cu. ft.
Effective Size................................................................................................45 - .55 mm
Uniformity Coefficient............................................................................... 1.6 or less
Acid Solubility................................................................................................... 0.3 - 1.6%
Specific Gravity.............................................................................................. 2.65 - 2.75
For over 50 years, Red Flint River sand and gravel have been
satisfying the requirements of industrial and municipal users.
Red Flint products have been specified and used nationally and
internationally because of their high-quality, desirable chemical
properties, color and a wide range of precision sizing.
Conditions for Operation (Filter Sand):
Bed Depth..............................................................................................................18 - 30 in.
Backwash Rate........................................................................15 - 20 gpm./sq. ft.
Backwash Bed Expansion..................................................35% of bed depth
Service Flow Rate
Municipal................................................................................... 1.5 - 2 gpm/sq. ft.
Industrial................................................................................................... 3 gpm/sq. ft.
Domestic................................................................................................ 5 gpm/sq. ftt.
Processing and regular analysis are supervised by registered
professional engineers. Pre-shipment analysis is available to be
certain of compliance with specifications.
FILTER SAND is graded specifically for use at water filtration
plants. It can be used in municipal, industrial or residential ap­pli­
ca­tions.
The highly spherical shape of UNCRUSHED GRAVEL promotes
good flow and even distribution. Being low in soluble impurities,
it will maintain the quality of
the treated water, especially
in softeners. Three inch layers
are recommended in graded
support beds.
Advantages:
• Highly-spherical shape and uniform grading provides reliable
performance in this product with a long history of performance.
• Low soluble impurities prevent undesirable mineral leaching
into process stream.
Filter Sand
104
FILSAND
GRAVEL 20
GRAVEL 14
Sand filtration continues to make good sense: its cost-to-benefit ratio is very high, and effluent water
quality is often very good. Sand systems can filter to a 10 micron level, yet they are simple in design
and operation. River washed .44 to .55 mm sand with a high silica content, low impurities and a
highly sperical shape for municipal, industrial and residential filter applications.
Pallet quantity - 56 bags per pallet
$
FILSAND
1/2 Cubic Foot Bag (50 lb)
18.80
$
FILSAND-50-BOX
1/2 Cubic Foot Box (50 lb)
36.25
Gravel
Our filtration silica sand and gravel offer extremely high pure silica content (>99% SiO2). All gravels
are washed, dried and sized using PLC controls for consistency. All gravel verieties meet American
Water Works Association B100 Specifications for Granular Filter Media and are NSF certified for
Standard 61 – Drinking Water System Components & Materials.
Pallet quantity - 56 bags per pallet
$
GRAVEL14
1/4" x 1/8", 1/2 C.F Bag
19.70
$
GRAVEL14-50-BOX
1/2 Cubic Foot Box (50 lb)
37.25
$
GRAVEL14-20-BOX
1/5 Cubic Foot Box (20 lb)
24.00

GRAVEL12
GRAVEL12-50-BOX
1/2" x 1/4", 1/2 C.F Bag
1/2 Cubic Foot Box (50 lb)
$
GRAVEL20
GRAVEL20-50-BOX
#20 Flint, 1/2 C.F Bag
1/2 Cubic Foot Box (50 lb)
$

GRAVEL 12
* Non-Stock Items. See “Terms and Conditions” for details.
Fax Nelsen — OHIO - 888.544.8780, ARIZONA - 602.442.0447, TEXAS - 210.714.2571 or FLORIDA - 813.712.2274
All prices and products subject to change without notice. ©2018 Nelsen Corporation
19.90
37.75
$
19.90
37.75
$

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