45-Degree Oral Power Inflator
45-Degree Oral Power Inflator
- A replacement K-style 45-degree Power Inflator
- Fits 1-inch inside diameter corrugated rubber hose
- Includes mouth guard and pin for pull-to-dump cable
- Compatible with many/most Scuba brands
- The attaching hardware (clamps or zip ties) is not included
The BC quick disconnect post on the DGX Oral Power Inflator is compatible with the slide-lock Schrader Valve fitting found on most ordinary low pressure BC inflator hoses. This widely used power inflator fits the 1-inch inside diameter corrugated rubber hose found on most tek BC aircells including those from Dive Rite, Halcyon, Highland, HOG, Hollis, IST Dolphin, Light Monkey, OMS, OxyCheq, White Arrow and many other brands.
Includes a removable rubber mouth guard and the pin for a pull-to-dump cable.
Push the button on the end to deflate or orally inflate the BC via the mouthpiece; push the other button for power inflation via the low pressure BC hose. Push both buttons simultaneously to dump gas out the mouthpiece directly from the low-pressure hose, a neat trick allowing you to leave your second stage in your mouth while still inflating a lift bag or SMB.
This product does not include attaching hardware (ie. zip ties or clamps that secure the product to your corrugated hose.)The attaching hardware is available separately.
Some inflation assemblies have a cable that runs through the inside of the corrugated hose. This cable is attached to the power inflator using the pin, such that if you pull down on the inflator itself (and thus pull the cable), a dump valve at the top of the inflator assembly is activated. This feature is usually called 'pull-to-dump' or 'remote-exhaust.' Your inflation assembly may or may not have the feature and the cable, but we include a replacement pin just in case you do need one. If the pin turns out to be unneeded you may safely discard it.
The power inflator service tool, o-ring kit and overhaul instructions are a 'save-a-dive' solution for qualified professionals but our recommendation is to replace, not service, your power inflator if it develops any problems. Improper service could cause a failure of buoyancy control, which has serious and life threatening consequences.
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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 quick-disconnect ( QD ) fittings 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. There is the further complication that the low-flow QD fitting commonly seen on power-inflators is not suitable for high-flow required by regulators, so QD fittings found on BC integrated second-stages use something else entirely.
- Low-flow BC power-inflator Schrader valve QD common to all BC brands sold in North America
- High-flow BC integrated 2nd stage QD common to ScubaPro Air II, Atomic SS1, Sherwood Gemini, Tusa Duo-Air IR3, Zeagle Octo-Z, and ODS (Private label sold by Blue Reef, Dive Rite, Hog and many others)
- High-flow BC integrated 2nd stage QD common to Aqualung AirSource, Aeris Air Link, Apeks Octo Plus, Aquatec Air3, Oceanic Air XS 2, and US Divers Air Mic
The low-flow QD posts can be further divided into two styles: a more widely seen post with a shorter barrel and a raised bridge across the top, or a much less common post with a slightly longer barrel and a flat top. In our experience, the flat top post seems more likely to be encountered in the UK and to a lesser extent in Europe; it's almost never seen in North America or Asia. Hoses designed to fit one style of low-flow QD post are less likely to be compatible with the other. However, even within the bridge top post design we have encountered occasional incompatibilities, usually when there is many years difference in age between the male and female fittings.
First the good news... low-flow QD fitting incompatibilities are rare. All the low-pressure quick-disconnect inflation hoses we sell are compatible with the post found on our replacement power inflator as well as the inflators on all the wings we sell. If you are concerned about compatibility, the best strategy might be to replace the power inflator and hose simultaneously from the same source. Keep in mind that if your BC hose and power-inflator are more than five years old, best practice is to replace them anyway.
Now the bad news... high-flow QD 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 QD hose with the same brand from the same source as the original equipment manufacturer.
We recommend using the OEM hose for your brand of BC integrated 2nd stage, but if you can't find an OEM hose then we do stock high-flow QD adapters that allow any standard-length LP regulator hose to be converted into a quick disconnect hose for BC integrated alternate air sources. The adapter 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. Each of the different quick disconnect adapters works with one or the other of the male posts found on specific brands. A snug fit is a desirable characteristic in all quick disconnect fittings; it means the fitting is 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. Unfortunately, in some cases the adapter might leak because of compatibility issues that are more likely with very old and/or worn posts. It the case of the SeaQuest brand Air Source, it's probably time to retire that device, you should also seriously consider retiring the entire SeaQuest BC; they are both over 30 years old.