Does the Flow Conditioning Device Ever Fail?
A documented field record of 25,000+ installations with zero recorded in-service failures on the current design — and an architecture that has no mechanism
by which it could ever block your water supply.
25,000+
ZERO
recorded failures, current design
16 Years
No Closure Member
Direct answer: According to AquaFlow Technologies' Engineering Position Statement (AF-TEC-010), the current-generation sealed FCD design — in service since 2010 — has zero recorded in-service failures across more than 25,000 installations and sixteen years of field use. The device contains no closure member of any kind (no gate, ball, disc, seat, or actuator), so there is no mechanism by which it could ever block or restrict flow. In the hypothetical event of an internal failure, water would flow exactly as it did before installation — the only thing at risk is the conditioning benefit, which is covered under the device's lifetime warranty.
A Field Record Measured in Decades,
Not Months
The FCD’s current design isn’t new or unproven — and it’s already gone through one
generational improvement based on its own field history.
25,000+
Units Installed Since 2010
ZERO
Recorded In-Service Failures
16 Years
Current-Design Field Service
Important: Source: AquaFlow Technologies, “Fail-Safe Behavior of the AquaFlow Water Flow Stabilization Device” (Document AF-TEC-010, Rev. 2.3, 2026), signed engineering position statement. This is the manufacturer’s own field record and engineering analysis; Water Flow Innovations has not independently audited the underlying installation data. An earlier, pre-2010 generation of the device used O-ring seals that were a known long-term degradation path — the 2010 redesign eliminated elastomeric seals entirely in favor of a permanently sealed core, and it is this current design that carries the zero-failure record above.
Engineering Position Statement
Read the Full Fail-Safe Engineering Position Statement
Why “Fails Open” Undersells It
A warranty tells you what a manufacturer promises to do if something goes wrong. A field record tells you how often something has actually gone wrong. But for the FCD, the strongest reliability claim isn’t the field record at all — it’s that the device’s physical design makes a supply-interrupting failure structurally impossible, regardless of what the field record shows.
AquaFlow’s engineering position states this plainly: the FCD contains no closure member — no gate, ball, disc, seat, or actuator of any kind. There is no “closed” state for the device to fail into, because the hardware required to create one simply isn’t part of the design. The zero-failure field record corroborates this, but the architectural fact stands on its own.
Most Fail-Open Devices Aren’t Built This Way
Most fail-open devices achieve that behavior through an engineered response — a spring, stored pressure, or a fail-safe mechanism that activates on failure. Those mechanisms can, in principle, fail themselves.
The FCD’s design takes a different approach entirely.
Engineered Fail-Open (Most Devices)
An active device is driven open on failure by a spring or stored energy — an improvement over failing closed, but the fail-safe behavior itself depends on a mechanism that could, in theory, also fail.
Intrinsic Fail-Open (the FCD)
The FCD has no closure member, no seating interface, and no drive mechanism of any kind. The open state isn’t something the device does when it fails — it’s the only state the hardware is physically capable of occupying.
What This Means for Your Facility
Reliability concerns are one of the most common questions we hear before installation.
Here’s what the field record and architecture actually translate to on-site.
No Production Risk From Device Failure
Because the FCD has no closure member at all, a failure — however unlikely — cannot interrupt water supply to your facility’s operations.
No Unplanned Water Service Outage
There is no “closed” state for the FCD to fail into. The device is physically incapable of shutting the line.
Backed by a Real Field Population
25,000+ real-world installations of the current design since 2010 is a substantial sample size, corroborating what the architecture already establishes.
Still Backed by Guarantee & Warranty
The FCD’s reliability record doesn’t replace its 6-month money-back guarantee or lifetime transferable warranty — both still apply regardless of field history.
Does Your Plant Have Any of These Signs?
These are the indicators that your water meter may be over-reading — and that you have recoverable savings on your next bill.
No Gate, Ball, or Disc
Nothing exists inside the device that could be positioned across the bore to block flow.
No Actuator or Power Source
The FCD is fully passive — unpowered, with no stored energy and no control input of any kind.
No Seating Interface
There’s no seat, orifice, or sealing land for anything to close against, even hypothetically.
No Elastomeric Seals (2010+)
The pre-2010 design’s only known degradation path — O-ring aging — was eliminated entirely in the current sealed-core design.
What Backs This Up, Beyond the Architecture
1
Formal Engineering Analysis
FMEA and fault tree analysis published by AquaFlow, examining every postulated internal failure mode.
2
Sixteen-Year Field Record
Zero recorded in-service failures of the current design across more than 25,000 installations.
3
Lifetime Warranty
The device is replaced under warranty if the conditioning function is ever lost — regardless of cause.
4
6-Month Guarantee
A money-back guarantee on the device itself, independent of the reliability question entirely.
See the Full Technical Breakdown
Components, certifications, installation overview, and guarantee and warranty terms — all in one place.
Frequently Asked Questions
What happens if the FCD fails?
Can the FCD shut off my water supply?
Has an FCD ever failed?
What protects me if something does go wrong?
Where does this reliability information come from?
Standards, Certifications & Water Efficiency Resources
25,000+ installations | ZERO recorded failures | No closure member — physically cannot block flow
A Proven Track Record, Backed by a Real Guarantee
See the full technical breakdown, download the full engineering position statement,
or talk to us about your specific facility.