Quick Disconnects (LP) - High Flow

These adapters allow any low-pressure regulator hose to be converted into quick disconnect system with high flow supply for a regulator 2nd stage or a BC integrated alternate air source. These QD fittings are NOT suitable for use with a high-pressure hose or SPG.

DGX Adapter: BC Integrated 2nd Stage Hose = BC Inflator
$11.00
DGX Adapter: LP Reg Hose = BC Integrated 2nd Stage
$21.95
DGX High Flow QD
$29.00
DGX Adapter: 9/16-18 to QD with Locking Collar
$22.00
DGX Adapter: 3/8-24 to QD with Locking Collar
$20.00
OmniSwivel High Flow QD
Select Part to See Price
OmniSwivel High Flow QD System Fittings
Select Part to See Price
High Flow QD Hose Assembly
$125.00
Service Kit - OmniSwivel, QDF Series
$19.99
Service Kit - OmniSwivel, QDM-CV Series
$19.99
OmniSwivel O-Ring Kit for OSI-QDM-YFI
$6.99

Warning

Using any type of quick disconnects to switch between gas supplies while in the water has the risk of introducing at least a few drops of water contamination in the line and possibly flooding the downstream side of the line. This has the potential to cause a malfunction in any devices that are downstream of the disconnect. The diver should close the upstream shutoff or valve, perform the switch, then open the valve and operate the downstream device to clear the line. Dive Gear Express recommends that in-water switching using quick disconnects only be performed as an emergency procedure. For in-water switching that does not run the risk of contamination through the quick disconnects, consider using a gas switch block.

Tek Tip

QC6 Quick Connect System and SCUBA

Swagelok makes the QC6 quick-connect system of high-flow fittings for the instrumentation industry where it is primarily used with liquids. The technical diving community as begun to adopt the QC6 system for mission critical quick-connect SCUBA applications where it is used with gases; it is particularly seen in rebreather applications. Compared to other high flow quick connect systems in scuba the QC6 system has some advantages: The QC6 stem is available with a double-end shutoff (DESO) feature indicated by a red color collar that blocks flow from both the body and the stem while they are not connected. The QC6 system can be reliably coupled and uncoupled while pressurized up to 250 psi. QC6 also has a relatively small inclusion volume of less than 1 cm³ when the fittings are coupled together while underwater.

The QC6 system from Swagelok does not natively offer any compatibility with the fittings commonly seen in SCUBA low-pressure gas applications meaning either aftermarket adapters are required and/or the QC6 fittings themselves must be aftermarket machined, which raises safety and reliability concerns. Considering the adapters, the QC6 solution is significantly larger and longer than other systems. Also, the QC6 system from Swagelok is considerably more expensive than other quick connect systems typically seen in diving applications; a single set of stainless steel QC6 body and DESO stem with adapters and/or aftermarket modifications is going to cost $200.00 or more. Regardless of the QC6 small inclusion volume, because using any quick-disconnect system underwater for gas switching is unavoidably going to allow some contamination in to the gas line, we do not recommend QC6 routine use for gas switching.

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