Inline Shut Off Valve – Freeflow Control Device
The Inline Shut-Off Valve provides greater control and safety in your dives. Designed for low-pressure applications, this compact and durable valve reliably prevents unwanted gas loss and ensures consistent performance in challenging conditions. Perfect for technical setups, it’s a trusted choice for deco rigs, stage bottles, rebreathers, and drysuit inflation.
Fitted to your regulator, the Inline Shut-Off Valve allows a simple sliding action to isolate the free-flowing second stage. This enables the diver to continue the dive using a secondary air source or manually control the airflow, ensuring a safe ascent to the surface.
Designed to fit all regulators that use the standard 9/16″ UNF hose fitting.
Inline Shut Off Valve Features
- Isolates free-flowing second stages
- Guards against unexpected air loss
- Improves diver safety
- Gives total control of a frozen second stage
- Fits any second stage with a standard hose fitting
Reliable Shut-Off: The Inline Valve allows divers to quickly and easily stop gas flow between the regulator hose and second stage, preventing critical gas loss and enhancing safety.
Durable Construction: Built with marine-grade brass fittings and a machined Delrin slide collar, the valve delivers long-lasting strength and corrosion resistance in demanding underwater environments.
Easy Operation: The textured slide collar is designed for simple use, even with gloves on, allowing divers to shut off or restore airflow quickly and efficiently.
Optimised Compatibility: Fits seamlessly between a standard regulator hose and second stage, with 9/16-18 UNF male inlet to 9/16-18 UNF female outlet threads.
Versatile Use: Commonly used with decompression rigs, stage bottles, rebreathers, and drysuit inflation systems, offering flexibility across various dive setups.
Low Pressure Rating: Designed for low pressure use only, the valve is rated to 200 psi (13.8 bar), ensuring safe and dependable function in technical diving environments.
Simple Maintenance: The straightforward design makes upkeep easy, preserving performance and extending the lifespan of your regulator system.
The Inline Shut-Off Valve is engineered for divers who value safety, reliability, and precision. Whether for preventing free-flow in cold water, managing gas during decompression, or protecting against accidental loss, this valve is a must-have addition to your technical diving gear.

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