DIVEWAYS has designed and manufactured quality dive equipment in Japan since its’ founding in 1974. Products are made from select materials and are produced to exact specifications by skilled workers. We do not compromise on any aspect of production, resulting in high quality products and outstanding performance.

Our approach differs from competitors who may simply sell imported products to the Japanese market. Instead, our product design is directly influenced by feedback and opinions from the divers who use our product. We combine the latest technology with the feedback from our customers in order to continuously improve our product design and performance. The diver’s opinion and feedback will continue to drive our product development.

DIVEWAYS products have been effectively used and embraced by a wide range of divers with great success. This includes applications from leisure divers all the way to professional divers working in deep sea commercial applications. For all of these divers, there is a high level of confidence in our quality products produced from the best materials available and proudly made in Japan.


FAIL SAFE is a new design idea conceived around the basic concept that mechanical or manual “countermeasures” can be activated by sensing any trouble or breakdown as soon as it occurs. This approach is based on the concept that any trouble with products can occur as a structural or mechanical failure or alternatively, as wear and tear from too much use. In other words, DIVEWAYS designs products with the idea that breakdowns or failures can occur but that the products have guaranteed safety measures. In Japan, this approach is generally interpreted as a multiple safety framework. Multiple safety systems are only a part of the FAIL SAFE technology, and DIVEWAYS sees FAIL SAFE as an integral part of the specialized equipment made for the underwater environment.
Just as an automobile, computer, table, chair, and the many other objects that surround us will occasionally break down or have some type of wear and tear after long use under various conditions, dive equipment also has the possibility to break down. Also, dive equipment is used in salt water which can further deteriorate the equipment’s condition. As humans cannot breathe underwater without dive equipment, SCUBA diving is highly dependent upon quality dive gear. FAIL SAFE is thus a critical component of a sport that relies so heavily upon high performance equipment.

The most important “lifeline” for a diver is the breathing apparatus and its primary component, the regulator. DIVEWAYS has devoted over 30 years of experience, technology, and attention to detail to development of its regulator. For example, in the first stage, the chance of the high pressure spring being damaged is extremely low (approximately within one in three million to thirty million).Only two cases have ever been reported.

Even though the possibility of damage to the spring is very low, it is not zero and thus DIVEWAYS has adopted a dual spring approach in furtherance of the FAIL SAFE concept. Having two springs enables continuous air supply in the event of any roblems with the first spring. In the event of any problems, the system is designed to supply 71.11 PSI to the second stage. Because this pressure is . of the normal pressure setting, the diver can immediately feel the difference in the air pressure and may even have some discomfort in breathing. However, the system is designed to supply enough air for the diver to safely ascend to the surface. This proven dual spring system is part of all DIVEWAYS first stages.
DIVEWAYS works hard to maintain its high, FAIL SAFE standard on the second stage of the regulator as well. For example, the dual spring system has been adopted not only for the high pressure spring but also for the poppet spring. With the capability to restrain air flow to half the normal flow, the 2nd spring works in the event of damage to single spring. This enables the diver to safely ascend to the surface by avoiding sudden air outflow from the tank. It is also designed to be able to further restrain air outflow by closure of the adjustment switch. [Notice]…In case of sudden alfunctions with the poppet spring for normal regulators, the remaining air in tank will completely run out in 80 seconds; even with a full 10 Liter tank (popular type nowadays). If the malfunction happens after consumption of half of the amount of air in the tank (Suppose the same size of 10 Liters),

then you only have 40 seconds left based on our testing data. If a diver, particularly a beginner, suffers flow covered with intense bubbles and impulse due to malfunctions with the poppet spring at 20meters(65.62feet) in depth, is it easy to ascend up to surface within the limited time keeping your mind in control without any panic? If you are diving with the DIVEWAYS regulator, you always have a 2nd spring remaining even though the 1st spring is damaged. This will give you approximately double the time 160 seconds so long as your tank is full. You would still have 80 seconds even if half of the air is remaining in the tank. This feature allows the diver to be able to obtain enough air to return safely up to the water surface while avoiding an air embolism. (Note that there is not enough time remaining for decompression stop even with DIVEWAYS products therefore there is still the risk of decompression sickness).

Further, the demand lever plays an important role that is essential in order for the diver to continue breathing. There is always a risk of fatal accidents due to loss of air supply resulting from a faulty or damaged demand lever. DIVEWAYS has developed a demand lever made of a 3 mm, stainless steel, round bar which has five times the strength of the typical flat demand lever of our competitors. The strength of the lever will allow a diver to get rid of any ice in the second stage during sub-freezing temperatures by simply pressing the clear button and enabling normal airflow operation.

The exhaust valve is also an important part of the air supply assembly. It must function in order to keep the system working properly. Some fatal accidents have been reported as a result of valve coming off because of damage on projection in center of valve. DIVEWAYS has patented a unique connection of all exhaust valves, including the one on the octopus, using the retainer prevents any accidental disengagement even the center projection being damaged. If any malfunctions do occur with the exhaust valve, trouble-free amount of water for breathing will infiltrate the second stage case, thus warning the diver to ascend to the surface for safety.

In addition, the concept of FAIL SAFE has been utilized even in the fixed diaphragm system of the dive equipment. This functional part of the dive equipment must work correctly in order for the diver to breathe. Instead of the typical system where the diaphragm is simply attached to the face, DIVEWAYS has produced dual attachments as an added safety measure.

With respect to the first fixed system, DIVEWAYS utilized a diaphragm lock type
which is affixed to the purge button inside the second stage (which is typically used
only for exhausting the water inside the second stage). Only DIVEWAYS offers the
dual function capability of the purge button to purge and fix the diaphragm.

In the second fixed system, a ring screw is attached to the face. A combination of a metal face and a metal ring make the second, outside case very secure, protecting it from any impact or compressive force. There has been one case of a diaphragm falling off (reported by CMAS) of a British navy diver as a result of this single fixed ring screw system. Based on its FAIL SAFE concept, DIVEWAYS has doubled the system’s attachments, preventing the diaphragm from ever falling off.

Also, if there is any problem in installing the purge button and face, you can see the incorrect installation by visual inspection due to its shape. Installing the diaphragm in reverse is not possible. Should the ring screw come off, the locking mechanism of the clear button will operate thus the diaphragm is designed not to fall off. Note that the diver can also sense abnormalities at the point where a few drops of sea water will enter the second stage (discharged during the exhaust strokes) by each inhalation.

In addition, DIVEWAYS has the ability to attach an emergency valve having patented which makes it possible to supply a quantity of air to the second stage in case of an emergency regardless of a diver’s ability to breath air from the main tank. The demand rubber valve holds down low pressure air from the first stage (which is designed to push open). DIVEWAYS emergency valve makes it possible to adjust the air supply from a very small amount to a large quantity by simply turning a knob which is a new and original concept worldwide. Therefore no matter what type of accident happens during the dive . from equipment freezes during ice dives to damage of the demand lever or an exhaust valve that has fallen off or a crack in the diaphragm . it is still possible for the diver to have enough air to ascend safely.

In addition to these items, other DIVEWAYS products are also designed and produced based on the FAIL SAFE concept. These include the exhaust (as pictured), dust cap, installation system of the low pressure hose, and the structure of the high and low pressure hose cover. For example, typically most of the exhaust systems feature plastic or stiff rubber attached to the second case by screw. There are a large number of divers who have had their second stage pulled from their mouth due to contact with coral, their own equipment, or other obstructions. This situation could potentially cause beginning divers to panic and forget their training. DIVEWAYS avoids this problem altogether by producing exhaust systems with very soft rubber of superior durability and quality. The patented fixed system requires no screw or tool and thus allows for very easy installation and removal. This makes checking the exhaust valve very easy to do.

One other example is the individual system adopted for the low pressure hose piping,
which is also based on the FAIL SAFE concept. Normally, it is difficult for a diver to
recover their regulator hose when it goes over the shoulder or is pulled from their mouth due to the regulator becoming stuck behind the tank. Again, this situation could potentially cause beginning divers to panic and forget their training due to the difficulty of recovery. However DIVEWAYS has researched a piping system for the low pressure hose which removes the danger by utilizing a longer hose which is routed
under the arm. This positioning is superior to the over the shoulder location as the second stage is always guaranteed to be within arm’s reach. This leads to additional safety and adds three dimensional ability as opposed to the two dimensional aspects of the over the shoulder hose location. Thus there is much less stress on the mouth from the hose itself. This option is optimal for divers with dentures who no longer have a “pulling sensation” when the regulator is in their mouth because of swivel mechanism on connection part.

Also, the string portion of the dust cap can sometimes be cut due to the over-tightening of the yoke knob. The DIVEWAYS dust cap has been designed to release the force built up from over-tightening, thus insuring that the dust cap will never be severed from the equipment. In addition, the size and shape of the yoke knob is designed to avoid more tightening than is actually needed. Other features include a drainage design that utilizes gravity to force the salt water out of the equipment during cleaning, preventing crystallization which leads to rust and other damage.

Because diving is a worldwide sport, our design parameters require that assembly and disassembly be as simple as possible in order to allow for unexpected circumstances in different environments. Neither the first nor the second stage requires any special or unique tools for assembly or dis-assembly other than your basic, typical tools found in most households. A simple screwdriver or a nail as a substitute of screwdriver is all you need to assemble or disassemble the second stage. As a result, divers using our products no longer need to be concerned with carry around tools except for consumable parts such as O-rings in anticipation of problems. Of course, the goal is to produce equipment that does not break down in the first place. However there is always the chance something can happen, and with that in mind while we design, we have done everything possible to ensure the safety even in the event of a breakdown. Again, safety all comes back to the FAIL SAFE design and we always try to consider “what ifs” as we design and produce our equipment. In summary, our thorough management and control of the design and management process by skilled technicians results in a FAIL SAFE system of safety that brings a sense of satisfaction and relief to our customers.


DIVEWAYS has numerous patents relating to the design and production process. Our unique and innovative products have resulted in a number of new patents every year.
These do not come easily and instead are the result of many long hours of trial and error, testing, and listening to customers in our effort to enhance safety with new and improved products. DIVEWAYS will continue to strive to be the “Only One” that you think of when choosing your high quality dive equipment.
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Copyright 2004 Diveways Corporation