FAQ About SCUBA Regulators

Products - Regulators & SPGs

FAQ About SCUBA Regulators

It is difficult to give you a meaningful answer regarding breathing performance of ANY of the primary regulators we sell, including our own DGX Gears brand, in relation to other specific brands or models we don't sell. However, perhaps we can put the performance issue in perspective: In reality, any modern balanced general purpose scuba regulator, designed to perform to EN 250 standards and properly maintained, is capable of delivering gas more than adequate for the needs of two sport divers (primary plus an octo). That's not to say there aren't poorly performing sport regulators in the market, but you can't buy them at Dive Gear Express.

There is no perfect regulator; they all have strengths and weaknesses that make each uniquely more or less suited to your needs. Keep in mind that a big brand name and high price are factors that rarely equate to better performance or better value. When choosing regulators at Dive Gear Express, make your decisions based on considerations that are less about "performance" and more about matching the regulator to the diving application. For example, an extreme exposure (i.e. deep and cold) technical diving regulator is a poor choice for shallow tropical sport diving. Beyond the features of the regulator itself, you should consider the supplier along with how the model was designed and has been supported. As an independent servicing dealer, we stock complete regulator packages, components and parts with online ordering and same day shipping.

Yes, these fittings are very standardized. Technical divers use the DIN connection because it is much more reliable than yoke connection. All SCUBA regulator first stages sold by Dive Gear Express have a universal standard DIN connector (also known as G 5/8" BSP) that will work with any 200 bar and 300 bar DIN outlet SCUBA valve. Internationally, the DIN outlet is by far the most commonly seen type of valve connection. The yoke A-clamp fitting for the K-valve outlet is still predominate in North America and the Caribbean, although even here the universal Pro DIN/K valve it rapidly replacing the K-valve on rental tanks. The DIN outlet is the most travel friendly because for use with K-valves, our DGX Custom sport regulator packages for all brands include an easy DIN-to-Yoke spin on adapter. A DIN-to-Yoke adapter is also available for purchase as an low cost option for those SCUBA regulators that don't include an adapter.

For more information please read our detailed article SCUBA Valves and Regulator Fittings.

The knob and lever are used to alter the breathing characteristics of some types of regulator second stages. For a detailed explanation on their purpose and usage, read our TekTip titled What is the knob and lever on my second stage?.

Dive Gear Express is an authorized service center for Dive Rite, Mares XR, and Poseidon regulators. We of course also provide maintenance service for our house brand DGX Gears regulators. For all the details visit SCUBA Regulator Maintenance Service at Dive Gear Express.

For regulator brands that we are not certified to service, we recommend using a factory authorized service center nearest you. Three long established U.S. based companies that specialize in factory authorized regulator service for most brands are Airtech in North Carolina, RegTech in Wisconsin, and Pacific Scuba Repair in California.

The only difference between our unbranded SPG "brass & glass" models and similar branded SPG models is the logo and price; any SPG will work on any regulator regardless of brand and they are all manufactured by Termo Industra of Italy with equal quality construction. Our unbranded generic SPG models have a lower retail price as a result of being sourced directly from the manufacturer. Our long experience with the unbranded and branded "brass & glass" SPG models has been they all have similar reliability and durability in the field. Regardless of brand, every product we sell is backed by Dive Gear Express 5-star quality customer service. For more information see our TekTips titled SPG Depth Ratings and Inside Submersible Pressure Gauges.

It's probably not the SPG or hose itself that's leaking. All high pressure SCUBA hoses use an air spool with two tiny #003 O-rings to mate the swivel connector on the female hose fitting to the male fitting on the hose or wireless pressure transmitter. If the air spool O-rings are worn, the assembly can also have a slow leak around the swivel. Even when an O-ring has failed completely or the spool is omitted entirely, a tiny flow restriction present in the high pressure port of the regulator and/or the male hose fitting will cause a leak to be much slower than expected. We recommend replacing the air spool, or at least the spool O-rings, whenever replacing the hose. See our video on Leaking SPG Spool Replacement.

No, the sound is completely normal, nothing is loose and nothing is wrong. If you vigorously shake the thin naked gauge, you will hear the sound of the internal coil spring contacting the body.

The sound is typical for all thin gauges regardless of brand, and in no way affects the performance of the gauge. The larger naked gauges, because they have a larger body that allows a different design, do not make this sound. However, g-force impacts on any gauge may cause a loss of calibration so please stop shaking your gauges.

The only difference is the branding and price; any DIN-to-Yoke adapter will work on any DIN regulator regardless of brand and they are all of equal quality chromed brass construction. The generic value priced DGX adapters are available in your choice of black or silver color, and features a nice sized handwheel which makes it easy-grip to install and remove from the valve.

Omniswivel brand products are available with a exceptional variety of different fittings and most are made from stainless steel. The Omniswivel brand itself is well knownfor their product quality and their products are made in the USA. Some of their most popular simple adapters are also available in generic chromed brass versions that are manufactured offshore. In our experience the durability and reliability are similar for both Omniswivel and generic versions.

† Originally named M&J Engineering, the company rebranded as Omniswivel International after their most well known product the Omni-Swivel omni-directional 360° swivel adapter that screws in-line between the low pressure hose and any standard second stage.

We do stock a few generic replacement parts such as hoses and O-rings, but in general our answer has to be "probably not" for most BC and regulator parts from these popular brands. We know it's frustrating; some dive equipment brands express concerns about liability or safety as their reason for prohibiting the retail sale of their branded individual replacement parts to consumers. The good news is that we agree the consumer has the right to repair and our Dive Gear Express policy is to sell individual parts for any brand we currently stock. For those brands we don't stock, our recommendation is to return the equipment directly to the manufacturer for service or repair.