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DGX Custom Regulator Packages

We offer hoses in all three applications used in scuba: High Pressure SPG (HP), Power Inflator (BC), and Low Pressure Regulator (LP). We offer high quality CE EN250 approved scuba hoses in rubber and double-braided flexible polyester versions for all three applications. LOOK CAREFULLY, we offer so many different hoses that it is easy to make a mistake when ordering.
Rubber Hoses for SCUBA Double Braided Flexible Hoses for SCUBA Miflex2™ Brand Hoses for SCUBA

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Choosing the Best Regulator Hose Length

The most common hose length found on the primary SCUBA regulator is about {28 to 30 in | 71 to 76 cm}. For many divers, this hose is too long and will cause the hose to "bow out," and create unnecessary drag and tug on the mouth. This makes for an uncomfortable dive, particularly in current. Our experienced divers choose the slightly shorter hose length of {26 in | 66 cm}, feeling it is more comfortable with less drag and pull.

Increasingly we see our experienced single tank divers using a {40 in | 1 m} hose routed under their arm with the primary regulator on 90° swivel and use a shorter {22 in | 56 cm} hose for the backup regulator. The backup regulator is hung on a necklace directly below the chin. The { 40 in | 1 m } hose is also the common choice for the alternate regulator used on traditional sport diving "octopus" configurations. It is the most popular length for technical diving stage and deco regulators as well.

Many advanced divers and instructors believe the common hose lengths are too short in out-of-air situations and now use a much longer hose, often { 60 in | 1.5 m } for those who dive open water exclusively. Technical divers have adopted a length of { 84 in | 2.1 m } for overhead environments.



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Choosing the Best Primary SPG Hose Length

For most recreational divers, the common high-pressure hose length of { 32 in | 81.3 cm } is long enough to be run under the left arm, across the chest and clipped off on the right shoulder D-ring. A few divers with a large chest, or who like to hold their instruments well out from their body when reading, require a longer hose length of { 42 in | 106.7 cm }. Recently, some recreational divers seeking very streamlined configurations are routing their HP hose with a compact SPG over their left shoulder in the same manner they route their BC hose and those divers are using HP hose lengths as short as { 24 in | 61 cm } and even { 21 in | 53.3 cm }.

Technical divers almost always carry a standalone SPG clipped off to the left waist D-ring. For use with double cylinder configurations, the typical HP hose length is { 24 in | 61 cm }, although some divers find that length slightly too short. It's almost always too short when used with a single cylinder configuration. Many divers clipping to their waist D-ring find a HP hose length of { 26 in | 66 cm } to work well with both singles and doubles. Cave and wreck divers also remove the SPG boot for the same reason they remove the cylinder boot, because the boot surfaces have been known to ratchet divers into tight spots, making extraction difficult.



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Choosing the best BC Power-Inflator Hose Length

For BC power inflator hoses with the ordinary quick-disconnect Schrader fitting, the most common length seen on the 'jacket' style BC is {26 in | 66 cm} or {28 in | 71 cm} because the large-diameter corrugated hose length is relatively long and most sport first stage regulators are 'fixed' port orientations which can result in less than optimal hose routing. Our observation of divers in the water is these one-length-fits-all hoses are often too long, causing the hose to 'bow' out and the inflator assembly to lay at an inconvenient or improper location with the resulting increase in drag. Using a shorter BC hose is particularly beneficial if the diver has added a powered alert whistle inline with the BC power-inflator.

For divers using back inflation, the typical length seen on the 'wing' style BC is {22 in | 56 cm} because the large-diameter corrugated hose is usually a little shorter on wings. This length generally works well on singles where the regulator first stage has swivel ports and on doubles where the hose will coming off the 5th port of the divers right post regulator. Some cave divers prefer a short corrugated hose where the inflator rests at their shoulder rather than their chest, and the BC power-inflator hose is typically {18 in | 46 cm} long. We don't have a recommendation for sidemount divers as the lengths are very sensitive to the configuration, but the {15 in | 38 cm} length is popular and we even see some sidemount rigs using {9 in | 23 cm} hoses, although with short hoses A-framing can be an issue.

BC integrated backup second stages are a special case and require a hi-flow quick coupling. 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. To replace the hose for one of these devices, you will need to use a {26 in | 66 cm} LP regulator hose plus a BC Integrated 2nd Stage Adapter.

Most drysuit inflation systems use the same fitting as found on BCs, but need a longer length. For drysuit divers, where the hose routes under their arm to a chest mounted power-inflator, the typical length is {30 in | 76 cm} or sometimes {36 in | 91 cm} depending on the locations of the power-inflator relative to the first stage supply. We've also seen some drysuit inflation systems which relied upon a special flow-restrictor orifice in the first stage fitting of the hose rather than in the inflator valve itself and while the drysuit inflator hose appears to be the same as an ordinary BC inflator hose, it is not the same. You should consult the manual that came with your drysuit to be certain your drysuit inflator valve can use a standard BC inflator hose.

Finally, we sometimes hear from someone seeking a BC hose for the backup power-inflator of their redundant bladder wing. There is controversy regarding the use of dual bladder wings, and we won't join the debate here. However, rapidly diagnosing a dribbling or runaway power-inflator plus other issues introduced by an additional BC inflation hose, leads some experienced divers who choose to dive with redundant bladder wings to avoid connecting the backup power-inflator. Instead the backup BC is only inflated orally in an emergency.



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