GravFlex Multi-Media Filters

Graver’s Flex Media Filters have proven their ability to meet any water filtration problem efficiently and economically in a wide range of commercial and industrial plants.  The most flexible of our product lines, with a simple change of media, downstream equipment is protected from suspended solids or iron fouling.  Available in any convenient size, and with valve arrangements and control options to meet any customer or special requirements.

Typical Applications

• Clarifier Effluent Polishing
• Cooling Tower Sidestream Filtration
• Reverse Osmosis Pretreatment
• TSS Reduction

STANDARD FEATURES

• Filtration Media: Anthracite/Filter Sand/Fine Garnet/Quartz Gravel
• Vessel:
  • Internal Finish: Blast SP5, NSF Epoxy Lining 10-16 MILS DFT
  • External Finish: Blast SP6, Tnemec N69F – Safety Blue
  • ASME Designed and Commercially Rated 100psig/120°F
  • Side and Top Manways (Handways 24”-36” Diameter)
  • Structural Steel Leg with Pads, Lifting Lugs, Strap Legs (24”-36” Diameter)
• Distribution:
  • Splash Plate Upper Distributor
  • Hub and Radial Lower Collector (24”-36” Diameter)
  • Header Lateral Lower Collector (42”-120” Diameter)
• Valves:
  • Resilient Seat Butterfly Valves with Pneumatic Actuators, EPDM Seats, SST Disc/Stem
  • Backwash Flow Control – Limit Open Stops
• Instruments: Inlet/Outlet Pressure Gauges
• Controls: 110V/60Hz/1PH Local Solenoid Enclosure, NEMA 4

AVAILABLE OPTIONS

• Ratings: ASME Code, Seismic Anchoring, ASME B31.1 Face Pipe, NEMA 4X, CRN
• Process: Separate Source Backwash, Air Scour
• Internals: 316 SS Upper and Lower Distribution Systems
• Pipe: 316 SS Face Pipe (Standard on 96”-120” Diameter)
• Media: Greensand Plus, Dual Media (Anthracite/Filter Sand), Single Media (Filter Sand)
• Valves: ASME Pressure Relief (Thermal), Limit Switches, Auto Backwash Flow Orifice Available 24”-72” Diameter
• Instruments: Bi-directional MAG Meter, Differential Pressure Transmitter, Turbidity Meter
• Controls: PLC, HMI, NEMA 4X, UL, cUL

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