XS Scuba Brass 2nd-Stage Quick Disconnect — Low-Pressure Adapter with Lock Screw

XS Scuba Brass 2nd Stage Quick Disconnect is a brass adapter that adds a secure, low-pressure quick-disconnect between your regulator hose and second stage for fast attachment or removal.

Whether you need a convenient way to swap second stages, change a regulator, or convert a full-face mask quickly, this brass quick-disconnect installs inline on the low-pressure side and gives a reliable connection with a mechanical lock. Designed for recreational and technical setups that operate below 200 psi, it provides a durable metal coupling option where a quick, repeatable connection is required.

How does the quick-disconnect install on my regulator hose?

Installation is straightforward: the coupler is fitted between the low-pressure hose and the second stage body. The unit threads onto standard low-pressure fittings and secures with its built-in lock screw so the connection remains stable during use.

• Fits between low-pressure regulator hose and second stage
• Threads onto standard low-pressure fittings used in scuba gear
• Lock-down screw prevents accidental separation
• Brass construction for corrosion resistance and durability

Can I use this with my full-face mask or only standard second stages?

The quick-disconnect works with most second stages and many full-face masks that accept low-pressure hose connections. Confirm your mask or second stage uses standard low-pressure fittings and operates under the 200 psi limit before fitting.

• Compatible with most regulators and full-face masks using standard LP fittings
• Intended for low-pressure supply lines only (below 200 psi)
• Useful for quickly swapping gear during training or surface transfers
• Not suitable for high-pressure or first-stage connections

What safety features and limitations should I know about?

The unit includes a mechanical lock screw to reduce the chance of accidental disconnection, and its brass body resists corrosion in marine environments. It is explicitly rated for low-pressure use only; do not use it on high-pressure ports or exceed 200 psi.

• Lock-down screw secures the connection in use
• Brass materials provide long-term durability in saltwater
• Strictly for low-pressure applications—do not exceed 200 psi
• Regular inspections and proper installation required for safe operation

Why choose a brass quick-disconnect instead of plastic or quick clips?

Brass offers a balance of strength and corrosion resistance that outperforms many plastics over time in underwater environments. The metal coupling and screw-lock provide a more robust, tactile connection for divers who swap second stages or use full-face masks frequently.

• Brass resists degradation from saltwater better than many plastics
• Screw-lock adds mechanical security absent in simple push-fit clips
• Durable for repeated attachments and removals during training or multi-user settings
• Compact design keeps low-profile inline with your regulator hose

Who is this for: The XS Scuba Brass 2nd Stage Quick Disconnect is ideal for dive instructors, rental shops, technical divers, and recreational divers who need a dependable low-pressure coupling to swap second stages or attach full-face masks quickly. It suits anyone who wants a rugged, brass inline adapter for repeated use on LP hoses—provided gear is compatible and operations remain below the 200 psi rating.