Description
PRODUCT INFO
Supplier: Pentair Water Filtration-tank Div.
Supplier Part #: 60009-00
Fleck Commercial Air Check
Item Specifications
| Options | 900 | Type | Air Check |
| Item Weight | 0.83 lbs per EA |
The Air Check for a Fleck Commercial Valve
The FL900 is a Fleck commercial air check assembly, part number 60009-00, one of those small components that quietly determines whether a system regenerates cleanly or gives you trouble. During the brine draw portion of a regeneration, the valve pulls brine out of the salt tank; the air check is what stops the draw at the right moment, sealing off the line before air can be pulled into the valve. That seal keeps the system brining properly and prevents air from disrupting the flow through the resin bed.
What Goes Wrong Without It
When an air check wears out or its seal fails, the symptoms can be frustrating to diagnose. Air gets drawn into the valve, the brine draw becomes erratic, and you may find the salt tank overfilling or the softener no longer producing soft water even though it appears to be cycling. Because the part is small and buried in the routine of regeneration, it is easy to overlook, yet replacing a tired air check is often the fix that restores a commercial system to reliable operation.
Where It Belongs
This air check is built for Fleck commercial control valves, and the part number is your guide to matching it correctly. It works in concert with the brine line, the safety float in the salt tank, and the valve's own internals to manage the brining stage. On larger commercial systems where downtime is costly, keeping a spare air check on the shelf is smart preventive practice, since it lets you swap the part the moment symptoms appear rather than waiting on a delivery.
Confirm the Match
Because commercial valves come in several configurations, matching this air check to your exact valve is important before you order. Tell us the Fleck valve you are servicing and we will help confirm the FL900 is the right part for it. We include the documentation we have on file so you can install it correctly, and the Water Softener Plus team is here to help you diagnose the brining problem and guide the replacement so your system draws brine cleanly again.
Overview
- 🇺🇸 U.S.-based support and expert assistance
- 🔧 Built with trusted, industry-standard components
- 🚚 Ships nationwide - freight-safe packaging
- 🏠 Ideal for residential and light-commercial systems
Specs (Typical)
| Max Operating Pressure | 125 psi |
|---|---|
| Max Water Temp | 100 °F |
| Electrical | 120 V AC |
| Flow Range | 5-45 GPM (model dependent) |
Related: Control Valves . Parts . Get sizing help