Sentry I Open Air · G140

G140 Series

Higher-capacity open-air aeration available in low-yield and 25 GPM configurations for homes and small systems with greater demand.

Overview

The Sentry I G140 Series Open-Air System

The G140 Series • Higher Capacity • 25 GPM • Open-Air System

The G140 Series extends the Sentry I Open Air line with the same treatment options as the G130, offering higher capacity up to 25 GPM. The G140 can also be configured into a Low-Yield setup with the 10 GPM pump. In low-yield configuration, this two-tank system holds 110 gallons of usable water. Need more water, just add additional tank(s). Each additional tank will provide 90 more gallons of storage.

Low-yield and 25 GPM configurations let installers match the unit to well recovery rate and household demand.

The G140 Series system is designed to do everything the typical Open-Air System will do plus the ability to hold extra water for Low-Yield wells or contact time for High-Flow applications.

Sentry I Open-Air G140 Series — Low Yield part no. A 718M422, 25 GPM part no. A 739M442

Common applications

Where this system is commonly used

See all water problems

Capacity

Higher-demand homes

Suited to applications where treated-water demand exceeds compact residential units.

Supply

Low-yield wells

A low-yield configuration is available for wells with limited recovery rates.

Odor

Sulfur & iron

Commonly used to support reduction of sulfur odor and iron staining.

System fit

How it fits into a treatment system

Like other Open Air Systems, the G140 Series is typically installed ahead of filtration, providing aeration to support oxidation.

The 25 GPM configuration is often paired with appropriately sized storage and pressure equipment to maintain consistent delivery.

Key features

Key features

  • Higher-capacity open-air aeration
  • Low-yield and 25 GPM configurations
  • Same treatment options as the G130
  • Serviceable, dealer-supported components
  • Commonly installed ahead of filtration