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 |
