Description
An inline mechanical shut-off timer that automatically stops water flow after 15–120 minutes — prevents container overflow when filling jugs, tanks, or bottles from a countertop RO system. No batteries, no electricity. Includes 3/8″ OD tubing adapters.
Why you need this
Countertop RO systems produce purified water continuously as long as the faucet is open. If you’re filling a jug, tank, or bottle and walk away, the container overflows. This inline mechanical timer solves the problem: set your fill time (15 to 120 minutes), start the system, and the timer automatically shuts off water flow when the time is up — no monitoring, no spills.
It’s fully mechanical — no batteries, no power outlet, no electronics. Turn the dial to set the time, and the spring-driven mechanism does the rest. Perfect for overnight or unattended operation.
This timer kit uses 3/8″ OD tubing connections. It works with countertop RO systems and setups that use 3/8″ lines. MyWaterClub Legacy countertop RO systems use 1/4″ OD tubing — you would need a 1/4″-to-3/8″ adapter (not included) or the timer can connect to the garden/laundry hose outlet directly via the included 3/4″ adapters.
Key benefits
- ✓Adjustable 15–120 minutes — set the fill time you need
- ✓Automatic shut-off — prevents overflow, spills, and water damage
- ✓Fully mechanical — no batteries, no electricity, no electronics
- ✓Two connection options — inline on 3/8″ tubing or direct to a garden/laundry hose
- ✓Great for filling bottles, jugs, tanks — walk away without worry
- ✓Complete kit — timer + nipple + 2 adapters included
What’s in the box
Specifications
Often used with
Good to know before you buy
- This kit connects via 3/8″ OD tubing. If your system uses 1/4″ OD tubing (like MWC Legacy systems), you’ll need a 1/4″-to-3/8″ adapter, or connect the timer at the garden/laundry hose outlet using the included 3/4″ adapters.
- Turn the dial past 120 and back to your desired time for the most accurate set. Mechanical timers are most consistent when wound fully first.
- The timer shuts off flow, not the faucet. When the timer closes, water stops flowing to the system. Turn off the faucet manually afterward to release pressure.
- Test with a short fill first (15 min) to calibrate your expected fill time before leaving unattended.
- The timer is a mechanical (spring) device — timing is approximate, not precision. Allow a margin when filling near-capacity containers.



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