Authentic Japanese product with full international tracking.

Tracked worldwide shipping typically ¥1,200–¥2,300 depending on cart weight and destination.

GRAYL UltraPress One-Way Valve is a genuine silicone valve designed for compatible UltraPress cartridges and purifier systems. It helps prevent backflow of purified water into the filter and protects the system when carrying drinks mixed with powders after purification.

Why choose this product:

Original replacement part, simple fitment, and added protection for the filter during outdoor, sport, and everyday use.

How to use:

Install the valve on a compatible UltraPress cartridge or purifier according to the product manual. Check fitment regularly and replace when worn.

Who it may be useful for:

Useful for UltraPress users who want to maintain proper filter protection and keep their purifier system working as intended.

Important information:

Original weight: 10 g. Material: silicone rubber. Compatible with selected UltraPress and related cartridge models, including older models. Contact us if you want help confirming compatibility before ordering.