1. Optimized Control Valve The refill adapter combines easy flow adjustment, safe use and an efficient control valve. It reliably prevents leaks during pouring and ensures safety with every use. Compatible with different bottle types, it offers a balanced mix of functionality and ease of use. Built with robust construction and a precise mechanism for dependable performance. 2. Durable and Reliable Made from high density brass for long service life. Provides safe and efficient use of the filling adapter outdoors. Suitable for regular use. 3. Optimal Compatibility Designed for camping enthusiasts, this adapter expands application possibilities with seamless compatibility with cartridges. It provides a fast filling process that supports uninterrupted cooking or outdoor heating. An ideal choice for outdoor activities. 4. Balanced Flow Provides a stable flow thanks to a flexible structure that resists deformation. Abrasion resistant properties and a reinforced outer layer support reliable outdoor use in varied conditions. Use scenarios - Camping and backpacking: quick, safe cartridge filling for camp stoves on the trail. - Outdoor cooking and heating: continuous filling to support cooking or heating without interruptions. - Outdoor events and daily outdoor use: compatibility with different bottle types and durable performance in harsh environments.