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INDUSTRIAL SAND FILTERS
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GENERAL DATA
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Disposition
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Vertical
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Horizontal
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Equipment diameter
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From DN-500 up to DN-3800
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From DN-1400 up to DN-3800
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Shell length
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Ask STF-Filtros
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Working pressure
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From 1 up to 10 bar (if others ask STF-Filtros)
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Maximum fluid temperature
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Ask STF-Filtros
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INTERNAL DISTRIBUTOR
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Optional internal distributor
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Arm collectors or nozzles plate
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Nozzles plate standard materials
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Polypropylene
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Arm collectors standard materials
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PVC
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Nozzles plate special materials
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Polypropylene / PVDF / Stainless steel
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Arm collectors special materials
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PVC / Polypropylene / PVDF / Stainless steel
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FILTERING MEDIA
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Monolayer media
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Silica sand
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Bilayer media
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Anthracite + Silica sand
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Trilayer media
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Anthracite+ Silica sand + Garnet
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Absorption media
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Activated carbon
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STANDARD MATERIALS
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Filter housing
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S-275-JR carbon steel
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Flanges and inlet/ outlet connections
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S-235-JR carbon steel
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Finish pretreatment
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Blasting up to degree SA 2 ½
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Standard internal coating
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Epoxy without food quality solvents. 300 micron dry layer thickness.
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Sea water internal coating
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3 mm rubber lining thickness
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External coating
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- 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.
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Joints and bolts
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Bichromate quality 5.6 and 5.8
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Joints
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EPDM
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SPECIAL MATERIALS (OPTIONAL))
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Filter housing and lids
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A-516 carbon steel
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P-265 GH carbon steel
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AISI 304-AISI 316 stainless steel
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Flanges and inlet/ outlet connections
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A-105 and A-106 carbon steel
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S-235-JR carbon steel
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AISI 304-AISI 316 stainless steel
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Finish pretreatment
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Blasting up to degree SA 2 ½
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Glass bead blasting
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Internal coating
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Epoxy without food quality solvents. 300 micron thickness
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-
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Sea water internal coating
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3 mm rubber lining thickness
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-
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External coating
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-Zinc silicate primer. 65 micron thickness.
-Two-component epoxy paint cured with polyamide. 75 micron thickness
-Bright aliphatic polyurethane enamel. 50 micron thickness
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-
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Joints and bolts
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Bichromate quality 5.6 and 5.8 / A2 and A4 stainless steel
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A2 and A4 stainless steel
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VALVES
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Collectors
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Carbon steel with paint treatment or galvanized steel / AISI 304 and AISI 316 stainless steel
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Valves
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Butterfly /Ball/ Balloon
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Valves drive
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Manual / Pneumatic / electric / Hydraulic
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Control systems
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PLC Siemens control system and touch-screen
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DESIGN
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Design codes
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ASME Section VIII / EN 13445 / AD-Merkblatter / CODAP
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