Scuba Tank Refill Adapter, G5/8 to 8 mm, Aluminum

Portable scuba tank refill adapter helps you top up a small cylinder fast from a larger tank or compressor for safer, more flexible dives. Built with a standard G5/8 input and an 8 mm male quick-connect outlet, it’s designed for smooth, leak-resistant air transfer under high pressure. Compact aluminum construction makes it easy to pack for travel, training, routine maintenance, or emergency backup tank refills.

• Fits standard G5/8 input with 0.3 in / 8 mm male quick-connect outlet for broad scuba tank and compressor compatibility


• Delivers fast, smooth air transfer with a precision sealing surface to help reduce leaks during refills


• Handles high-pressure use with durable aluminum body, finely machined threads, and corrosion-resistant build


• Simplifies setup with quick-connect operation for faster large-to-small cylinder filling


• Packs easily with compact, lightweight design for dive bags, tool kits, and travel-ready use

Keep this high pressure fill station adapter on hand to reduce downtime between dives and stay prepared when a backup bottle needs a rapid top-up. The rugged aluminum construction and clean thread machining are built for repeated connections, while the compact footprint makes it a practical addition to any dive gear setup. For recreational diving, training sessions, or emergency readiness, this refill connector is a simple way to support consistent air replenishment. Grab yours today and keep your fill setup ready when you are.

• Material: Aluminum


• Input: G5/8 in


• Output: 0.3 in / 8 mm male quick-connect


• Size: 5.4 x 2.4 x 0.9 in (136.5 x 62 x 24 mm)


• Weight: 0.53 lb (0.24 kg)