HydroLogic BIGboy Pleated Sediment Filter, Cleanable | 4.5 x 20 in

HydroLogic BIGboy Pleated Sediment Filter for the First Stage

This is the first-stage cartridge for the HydroLogic BIGboy dechlorinator, the one water meets before it ever reaches carbon. Its job is mechanical: catch silt, rust, dirt, sand and scale so the stages behind it last as long as they should. Instead of a solid wound depth media, it uses folded pleats of polyester and polyester-cellulose. Pleating packs far more filter surface into the same 4.5 x 20 in body. More surface means debris spreads out instead of plugging one thin skin, and flow holds up longer between cleanings. The core is polyester-plus and the end caps are polyurethane and pliable plastisol, which seal against the housing without a separate gasket. It is sized for the BIGboy's 420 GPH (7 GPM) rating. Water temperature can run up to 140°F, depending on pressure and load time. This cartridge removes particles only. It does nothing for chlorine, chloramine or dissolved solids, which is the carbon stage's work downstream.

Servicing a Whole House Sediment Filter Without Replacing It Every Month

Well water, older municipal mains and rain catchment tanks all send grit that wrecks a carbon block early. Put this cartridge first in line so the expensive media only ever sees clean water. When the pressure gauge drops or flow to the reservoir slows, shut the supply and open the housing. Rinse the pleats with a garden hose from the outside in until the run-off turns clear. A soft brush lifts clay or iron staining that a hose alone leaves behind. Let it drip dry, then reinstall it with the housing O-ring seated properly. HydroLogic schedules regular cleaning and a full replacement twice a year. Heavy iron or sandy wells may need it sooner, since pleats eventually stain and stiffen past the point of rinsing. Keep a spare on the shelf so a dirty cartridge never sits in service just because the new one has not arrived. Original HydroLogic cartridges also keep the system warranty intact.

Key Features

• Pleated Surface Area: Folded media holds more debris before flow drops, stretching the time between cleanings.
• Cleanable and Reusable: A hose rinse restores flow, so one cartridge covers months of service.
• First-Stage Protection: Catching sediment up front spares the carbon and membrane stages from early clogging.
• BIGboy Fit: The 4.5 x 20 in body drops straight into the BIGboy sediment housing.
• High Flow Rating: Sized for the system's 420 GPH flow when filling large reservoirs and irrigation tanks.
• Durable Materials: Polyester media, a polyester-plus core and polyurethane end caps tolerate water up to 140°F.

Technical Specifications