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STF Sand Filter

STF Sand Filter
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STF Sand Filter

STF Sand Filters

Filters use sand for a depth filtration . The filtered water is collected by two different systems, manifolds in a uniform distribution or nozzles covering a steel plate at the bottom.
Sand Filters with ManiFolds

INDUSTRIAL SAND FILTERS

 

INDUSTRIAL SAND FILTERS

GENERAL DATA

Disposition

Vertical

Horizontal

Equipment diameter

From DN-500 up to DN-3800

From DN-1400 up to DN-3800

Shell length

Ask STF-Filtros

Working pressure

From 1 up to 10 bar (if others ask STF-Filtros)

Maximum fluid temperature

Ask STF-Filtros

INTERNAL DISTRIBUTOR

Optional internal distributor

Arm collectors or nozzles plate

Nozzles plate standard materials

Polypropylene

Arm collectors standard materials

PVC

Nozzles plate special materials

Polypropylene / PVDF / Stainless steel

Arm collectors special materials

PVC / Polypropylene / PVDF / Stainless steel

FILTERING MEDIA

Monolayer media

Silica sand

Bilayer media

Anthracite + Silica sand

Trilayer media

Anthracite+ Silica sand + Garnet

Absorption media

Activated carbon

STANDARD MATERIALS

Filter housing

S-275-JR carbon steel

Flanges and inlet/ outlet connections

S-235-JR carbon steel

Finish pretreatment

Blasting up to degree SA 2 ½

Standard internal coating

Epoxy without food quality solvents. 300 micron dry layer thickness.

Sea water internal coating

3 mm rubber lining thickness

External coating

- Zinc silicate primer. 65 micron dry layer thickness.

- Two-component epoxy paint cured with polyamide.75 micron dry layer thickness.

- Bright aliphatic polyurethane enamel. 50 micron dry layer thickness RAL 5015.

Joints and bolts

Bichromate quality 5.6 and 5.8

Joints

EPDM

SPECIAL MATERIALS (OPTIONAL))

Filter housing and lids

A-516 carbon steel

P-265 GH carbon steel

AISI 304-AISI 316 stainless steel

Flanges and inlet/ outlet connections

A-105 and A-106 carbon steel

S-235-JR carbon steel

AISI 304-AISI 316 stainless steel

Finish pretreatment

Blasting up to degree SA 2 ½

Glass bead blasting

Internal coating

Epoxy without food quality solvents. 300 micron thickness

-

Sea water internal coating

3 mm rubber lining thickness

-

External coating

-Zinc silicate primer. 65 micron thickness.

-Two-component epoxy paint cured with polyamide. 75 micron thickness

-Bright aliphatic polyurethane enamel. 50 micron thickness

-

Joints and bolts

Bichromate quality 5.6 and 5.8 / A2 and A4 stainless steel

A2 and A4 stainless steel

VALVES

Collectors

Carbon steel with paint treatment or galvanized steel / AISI 304 and AISI 316 stainless steel

Valves

Butterfly /Ball/ Balloon

Valves drive

Manual / Pneumatic / electric / Hydraulic

Control systems

PLC Siemens control system and touch-screen

DESIGN

Design codes

ASME Section VIII / EN 13445 / AD-Merkblatter / CODAP