Aluminium SWITCH Trigger: Brew and Clean Your Immersion Dripper

By Hario USA | Published: 2026-11-04

Category: How-to Guides

Learn how to brew with the Hario SWITCH immersion dripper and keep the aluminium trigger clean for smooth, reliable pours every time.

Quick answer

Use the aluminium SWITCH trigger as a durable replacement for the standard plastic trigger, and follow a simple brew-and-clean routine: preheat, brew with the valve closed for immersion, then open to drain, and hand-wash the trigger regularly to prevent buildup.

Why the trigger material matters for immersion brewing

The SWITCH dripper relies on a trigger mechanism to hold and release the valve. A worn or sticky trigger can make it hard to switch between immersion and pour over, leading to inconsistent extraction. The aluminium SWITCH trigger is a spare part designed for those replacing the standard plastic trigger; it is not compatible with Largo Tea products, so check your model before ordering.

When to replace the trigger and what to expect

Replace the trigger if you notice the valve no longer stays closed during immersion or if the action feels rough. The aluminium trigger is sold as a spare part only—base, ball, and dripper are not included—so you will need to reuse your existing parts. It is made in China and should be washed by hand; it is not microwave safe.

Step-by-step: brewing with the SWITCH and cleaning the trigger

Preheat and set up: Rinse the dripper with hot water, insert the filter, and add coffee. Make sure the trigger is in the closed position so the valve seals. A cold dripper can drop your brew temperature; always preheat.
Add water and immerse: Pour water in a circular motion, ensuring all grounds are saturated. Let the coffee steep with the valve closed for your desired time. If water drips through immediately, check that the trigger is fully closed and the valve is clean.
Release the valve: Gently press the trigger to open the valve and let the coffee drain. Avoid pressing forcefully; a light touch is enough. Forcing the trigger can damage the mechanism; if it sticks, rinse and try again.
Clean the trigger after each use: Remove the trigger and rinse it under warm water. Use a soft brush to remove coffee oils. Hand wash only—do not put it in the dishwasher or microwave. Coffee oils can harden and cause sticking; rinse immediately after brewing.
Deep clean weekly: Soak the trigger in a mixture of warm water and a mild coffee cleaner for 10 minutes, then rinse thoroughly and dry. Regular deep cleaning prevents buildup and keeps the trigger moving smoothly.

Product facts

Aluminium SWITCH Trigger: Aluminium SWITCH trigger is a spare part (base, ball, and dripper not included) and is not compatible with Largo Tea products. Ensure you have the correct SWITCH model and reuse your existing base and ball; do not buy for Largo Tea.
Aluminium SWITCH Trigger