• Home
  • /
  • US Water Backwashing Greensand Plus Filter 1.5 Inch | 10-28 GPM

US Water Backwashing Greensand Plus Filter 1.5 Inch | 10-28 GPM

SKU 140-28F-GSP
REGULAR PRICE: $2,916.73 $1,760.00 to $3,370.00

In Stock

REGULAR PRICE: $2,916.73 $1,760.00 to $3,370.00


1.5 Inch US Water Commercial Backwashing Greensand Plus Filter | 10 GPM to 28 GPM

The US Water Backwashing Greensand Plus Filter is designed to remove iron, manganese and small amounts of sulfur from the water supply with the manganese dioxide based greensand plus. It is recommended that a continuous feed of chlorine or potassium permanganate be used to keep the media activated.


  • Flow rates from 10 GPM to 28 GPM
  • Fully-adjustable Fleck 2815 time-clock filter valve
  • Lead-free brass valve body for superior strength and durability
  • Automatic 12-day mechanical time-clock control (shown right)
    • Optional NXT2 Computerized Controller – Provides tremendous flexibility
  • Time-tested hydraulically-balanced piston, seals and spacers designed to control service flow and backwashing
  • Just one internal moving part
  • NSF Certified fiberglass resin tanks (tanks are generally natural in color, but can vary)
  • 1.5" Full-flow hub and lateral Distributors on systems 21” and larger (shown at right)
  • Highest quality Greensand Plus Manganese Dioxide Media


Model NumberCubic Feet MediaPounds GravelPeak Flow RateBackwash Flow RateMineral TankShipping Weight
140-28F-GSP-335010 GPM12 GPM14 x 65400 lbs
140-28F-GSP-445012 GPM15 GPM16 x 65625 lbs
140-28F-GSP-557516 GPM20 GPM18 x 65775 lbs
140-28F-GSP-7710021 GPM25 GPM21 x 621000 lbs
140-28F-GSP-101012528 GPM35 GPM24 x 721375 lbs

Remember: In order to get proper filtration, you need prolonged contact with the Greensand Plus. Therefore, it’s better to oversize the filter than undersize it. You should base your flow rate on the continuous flow, not the maximum flow.

Product Reviews