Claber 8421 Mechanical Water Timer

• Made from: ABS (Acrylonitrile Butadiene Styrene)
• Inlet thread: 1-inch with a 3/4-inch adapter
• Number of outlets: 1
• Outlet thread: 3/4-Inch
• Outlet connection: Quick-Click System for UK standard 1/2-inch hose pipes
• Working pressure: 1-5 bar
• Warranty: Three Years
• Minimum / Maximum watering duration: 5 minutes / 120 minutes
• Washable filter: Yes
• Weight: 175 gms

• A large rotary dial makes setting the desired watering time between 5 and 120 minutes simple.
• No batteries are required.  The timer operates mechanically, eliminating the need for batteries or power sources.
• Reliable and durable: Made from high-quality materials and designed for long-lasting use.
• Versatile: Suitable for various irrigation applications, including sprinklers and drip systems.
• Water-saving: Helps prevent overwatering and ensures efficient water usage.
• The adapter connects directly to a 1/2-inch or 3/4-inch male threaded garden tap. 

What is the Claber 8421 manual tap timer?

The Claber 8421 is a mechanical (non-digital) tap-mounted watering timer that allows you to set a single watering duration. Once the time has elapsed, the water automatically shuts off.

Does the Claber 8421 require batteries or electricity?

No. The timer is fully mechanical and does not require batteries, solar power, or mains electricity.

How do you set the watering time?

Watering duration is set by turning the timer dial to the desired time. The timer will count down and automatically stop the water flow when finished.

What is the maximum watering duration?

The maximum watering time is up to 120 minutes (2 hours), depending on the selected setting.

Can the timer water automatically at specific times of day?

No. The Claber 8421 does not have a clock or scheduling function. Watering starts immediately when the dial is turned.

Is it suitable for drip irrigation systems?

Yes. The Claber 8421 works well with drip irrigation systems, soaker hoses, and sprinklers, as long as adequate water pressure is available.

Can it be used with sprinklers?

Yes. The timer is compatible with most garden sprinklers and hose-end watering systems.

Is the Claber 8421 suitable for low-pressure systems?

It is designed for standard domestic water pressure. Performance on gravity-fed systems may vary depending on available pressure.

How is the timer installed?

Installation is quick and tool-free. The timer screws directly onto a standard ¾" outdoor tap and connects to a hose or irrigation system.

Is the timer weather-resistant?

Yes. The Claber 8421 is designed for outdoor use and can withstand normal garden weather conditions. It is highly recommended to remove the timer from the tap in the winter months, as the Claber 2-year warranty does not cover frost damage.

Can watering be stopped before the timer finishes?

Yes. You can stop watering at any time by turning the dial back to the off position or closing the tap.

Does the timer help save water?

Yes. By automatically shutting off the water after the selected duration, it helps prevent overwatering and water waste.

Is the Claber 8421 suitable for use while on holiday?

It is best suited for attended or short-term watering tasks. For unattended or scheduled watering while away, an automatic digital timer is recommended.

Who manufactures the Claber 8421?

The Claber 8421 is manufactured by Claber, a well-known Italian brand specialising in garden irrigation products.