DGX Adapter: LP Reg Hose = BC Integrated 2nd Stage

DGX Adapter: LP Reg Hose = BC Integrated 2nd Stage
DGX Adapter: LP Reg Hose = BC Integrated 2nd Stage DGX Adapter: LP Reg Hose = BC Integrated 2nd Stage
  • Converts regulator hose to quick disconnect hose for BC integrated alternate air sources
  • Select from different type fittings that are specific to your brand (see options listed below)
  • 9/16-inch male end screws into an ordinary LP regulator hose - other end is a female slide-lock fitting
  • Adapter will add about {2 in | 5 cm} to the length of the regulator hose

DGX Adapter: LP Reg Hose = BC Integrated 2nd Stage

$19.95
In Stock
SKU
DX-7041xx
This adapter will connect any low pressure SCUBA regulator hose to your BC integrated alternate air source

Adapter will add about {2 in | 5 cm} to the length of the regulator hose. Suggested hose lengths are {22 in | 56 cm}. {24 in | 61 cm}, or {26 in | 66 cm}.

You can not use a standard BC inflator QD hose Schrader fitting to supply a BC integrated alternate air source, as the device would not receive enough gas due to the flow restriction of a standard Schrader fitting. These adapters allow any standard-length LP regulator hose to be converted into a quick disconnect hose for BC integrated alternate air sources. The 9/16-inch male end screws into the second stage end of an ordinary LP regulator hose, and the other end of the adapter is a female slide-lock fitting that accepts the hi-flow male post found on BC integrated second stages. The adapter itself will add about {2 in | 5 cm} to the length of the regulator hose. Important: There are different adapters, each is for a different high flow fitting. One of the adapters should work based on the cross reference below and leaks are unlikely with currently manufactured devices. Each of the different quick disconnect female fittings works with the male post found on specific devices as follows:

  • ScubaPro Air II, Atomic SS1, Sherwood Gemini, Tusa Duo-Air II, Zeagle Octo-Z, and ODS (branded as Blue Reef, Dive Rite, Hog and many others)
  • SeaQuest style† See Note Below Regarding CEJN Compatibility
  • Mares Air Control, Aqualung AirSource 3, Aquatec Air-3 & Air-300, DGX Gears BCI, Oceanic Air XS 2, and XS Scuba MultiMax

† Various copies of the proprietary CEJN original 5mm high-flow couplings were used on some devices which are no longer manufactured such as the Aeris Air Link, Apeks Octo Plus, Beauchat Venturi, Oceanic Air Link, Oceanic Air XS, SeaQuest/Aqualung Air Source (but not the current Aqualung Air Source 3 model), US Divers Air Mic, and Zeagle Octo Plus. Collectively the quick-disconnect fitting on these devices is often generically referred to as the SeaQuest style connector (or sometimes Aqualung who later absorbed the SeaQuest brand), although there are slight variations among the devices. While the generic SeaQuest style posts look very similar to each other, in our experience the adapter may not be reliably compatible with every one of the posts on these various older devices. The Mares style adapter may (or may not) work better with a SeaQuest style post on your specific device, but if not then perhaps the most expedient solution is to consider replacing your obsolete device with a DGX Gears BCI Backup Regulator.

The low-pressure regulator hose is NOT included with these adapters. The adapter itself will add about {2 in | 5 cm} to the length of the regulator hose. The suggested lengths of the LP hose regulator hose are:

  • 24-inch LP Reg hose is suggested for typical sport BCD length 19-inch corrugated hose
  • 22-inch LP Reg hose is suggested for typical technical aircell length 16-inch corrugated hose

While it does not work to adapt a BC inflator hose to a regulator, it is possible to adapt a LP regulator hose to a standard BC QD inflator post but to avoid confusion we list that adapter separately (see related products above.) Having the additional low-flow BC inflator hose adapter in your save-a-dive kit provides an easy way to use your regulator with a different BC that has a common low-flow BC QD post simply by swapping the adapter on the end of the hose.

More Information
Brand DGX
SKU DX-7041xx
Weight 0.500000

Customer Reviews

Quick-Disconnect Compatibility and Lack Thereof

Divers are sometimes surprised to learn there is NO universal standard that defines the precise shape and exact dimensions of the compressed gas quick-connect coupling systems used in SCUBA. This can cause compatibility issues with the connection: the fittings will not connect at all; the fittings will not securely connect and can self-disconnect without any overt user action; the fittings will securely connect but gas will not flow; the fittings will connect but will exhibit slow leaks. Four Different QD Posts There is the further complication that the low-flow fitting commonly seen on power-inflators is not suitable for high-flow required by SCUBA regulators, so fittings found on BC integrated second-stages use something else entirely.

  1. Low-flow BC power-inflator Schrader valve post used on BCDs and SMBs
  2. High-flow BC integrated 2nd stage post used on the ScubaPro Air II & Atomic SS1 and many others
  3. High-flow BC integrated 2nd stage post used on the obsolete SeaQuest style devices
  4. High-flow BC integrated 2nd stage post used on the Mares Air Control & Aqualung Air Source 3 and many others

The low-flow posts used for inflation with the female Schrader valve couplings on low-pressure hoses seen in recreational diving can be further divided into two styles:

  • A widely seen post with a shorter barrel and a raised bridge across the top (BC QD, aka Hansen) typically encountered on products from Asia. This post is on virtually all ordinary power inflators used with BCDs and SMBs in North America. Pictured in #1 above.
  • A less commonly seen post with a slightly longer barrel and a flat top (International, aka DIN, aka SeaTec) is more likely to be encountered on products from the UK and Europe because there is an EN standard for the fitting. The International post is seen on nearly all current recreational diving drysuits because the two most dominate wholesale manufacturers of drysuit inflation valves are Apeks (UK) and SI TECH (Sweden).
These two slightly different low-flow posts are in theory compatible with the same Schrader valve female coupler, thus you will often see inflator hoses with the same BC QD coupler marketed for use with both BCD and drysuit inflation valves. However, in our experience the hoses with couplers designed for one style of post are less likely to be entirely compatible with the other style post. We have also encountered occasional incompatibilities in the fittings even within the same style, especially when there are many years difference in age between the female coupling and the male post.

Finally there are other quick-connect couplings occasionally encountered in recreational diving.

  • The CEJN original 5mm low-pressure high-flow fitting manufactured by CEJN AB of Sweden is notable for its reliability. Today, the CEJN proprietary fitting is typically encountered on the inflation valves of drysuits used in commercial diving while most drysuits in recreational diving use the International fitting.
  • The QD system of fittings from Omniswivel International use a coupling and post specifically designed for low-pressure high-flow breathing air applications. The QD post looks similar to CEJN but Omniswivel states their QD system is NOT intended to be compatible with CEJN.
  • The Milton Industries M-style (aka Industrial Interchange Type 'D') fitting is widely used with low-pressure high-flow compressed air driven industrial tools and typically encountered on inflation valves of heavy-duty salvage lift bags used in commercial diving.
  • The QC6 is a quick-connect system manufactured by Swagelok. QC6 is advantageous because the low-pressure high-flow fittings have shutoffs in both ends and can be operated while pressurized for dive applications that require managing the connection with minimal ingress of water. The QC6 fittings are typically seen connecting offboard low-pressure gases into closed-circuit rebreather loops.
  • Also manufactured by Swagelok, the QF4 is a high-pressure compact quick-connect system offering bi-directional flow with no shutoffs. QF4 style fittings are used in the DGX Gears blending and transfill system of components. The connection must NOT be uncoupled while under pressure.

First the good news... low-flow fitting incompatibilities are rare. All the low-pressure quick-disconnect inflation hoses we sell are compatible with the BC QD post found on our replacement power inflator as well as the inflators on all the BCDs and SMBs we sell plus the SI TECH and Apeks drysuit inflation valves with International fittings. We occasionally see compatibility problems with these posts and various adapters.

Now the bad news... high-flow fitting compatibility problems are commonplace. You can not use a standard inflation hose to supply a BC integrated alternate air source, as the device would not receive enough gas due to the restriction of a low-flow fitting. There are several different types of the high-flow fitting commonly seen on BC integrated second stages. If you are concerned about compatibility, the best strategy might be to replace the hose with the same brand from the same source as the original equipment manufacturer. If you can't find an OEM hose then we do stock high-flow adapters that allow any standard-length LP regulator hose to be converted into a quick disconnect hose for modern BC integrated alternate air sources.

A snug fit is a desirable characteristic in all quick connect couplings; it means the fittings are less likely to "self disconnect" or the o-ring seal to leak. However, it also means you must take care to hold the locking ring fully retracted while forcefully and completely pushing the fitting on to the post, then pull back on the connected hose to ensure secure connection.