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Scuba Octopus Setup
INTRO
The Scuba Octopus Setup may seem a little daunting at first to beginners or those who have just purchased this essential piece of kit for the first time, which is why Diving Squad are here to help!
But wait – back up, hold your sea horses. What exactly is a scuba octopus? Well, in order to breathe air from a scuba tank, you will need a scuba diving regulator or octopus.
These names refer to the same piece of scuba equipment, which helps to regulate the air that divers can breathe. The scuba octopus is highly necessary for all divers. Without a proper scuba octopus setup, you won’t have access to air.
But how do diving regulator parts work and what is the correct method for a scuba octopus setup? Never fear, Diving Squad are here!
Understanding this piece of your scuba kit is essential to being a scuba diver. You need to make sure that you can trust your scuba octopus setup, as this controls whether you are able to breathe underwater or not.
Diving Squad are here to answer to all of your questions below!
Table Of Content
- Attaching Regulator to Scuba Tank
- How Does a Scuba Regulator Work?
- First Stage Pressure Reduction
- Second Stage Pressure Reduction
- Guide to Buying a Scuba Octopus
- Scuba Regulator Setup: Scuba Regulator Diagram
- Scuba Regulator Parts
- First Stage Parts
- Yoke
- Dust Cap
- Ports
- Primary Second Stage Parts
- Alternate Second Stage Parts
- Low Pressure Inflator Hose Parts
- Submersive Pressure Gauge and Console
- Scuba Regulator Maintenance
- Diving Squad Debriefing
- Diving Squad and Marine Conservation
SCUBA FACT!
Attaching Regulator to Scuba Tank
Before diving in, it’s vital that you take special care and attention when assembling your scuba diving gear.
Preventing equipment problems during a dive is a major aspect of this sport!
Once you have your scuba octopus setup ready, you’ll need to safely and securely attach it to your scuba tank.
Newby divers might run into some hiccups in the beginning, but over time and with practice it becomes a really easy task.
First, you will need to attach your cylinder to the Buoyancy Control Device (BCD). Then you’ll need to attach the regulator to the cylinder valve.
Remember, the first stage of the regulator is what attaches to the air tank, so this is where you will need to focus. This is achieved through a yoke or DIN fitting. Read More about These Parts here! Then it’s just a matter of opening the cylinder valve and testing out the unit before your dive.
If you’re unsure about how to attach your regulator to the tank, be sure to get help from a dive professional. They will make sure that your dive gear and scuba kit is safe for use.
How Does a Scuba Regulator Work?
Scuba tanks are filled with compressed air at an extremely high pressure.
Trying to breathe directly from this is not possible, and would result in injury.
The scuba octopus setup, or regulator, reduces the pressure of this compressed air to a pressure that the diver can safely breathe.
The scuba diving regulator takes pressurized breathing gas or air from a tank and reduces it to an ambient pressure (this is the pressure that we can breathe in).
This is achieved by the air traveling through a series of hoses and valves.
The regulator then sends this breathable air to the diver.
As mentioned above, the scuba octopus setup works with two main stages: first stage pressure reduction and second stage pressure reduction.
It is important to understand the difference between these two stages, and which valves and hoses work to control them.
Don't be the One Without a Scuba Regulator!
Look at this unhappy chap! He didn’t have a Scuba Regulator to attach to his Scuba Octopus, despite that being the most important part of the entire scuba octopus setup!
He now has to climb back aboard the dive boat, only seconds after having dived off it. Forever locked in a never ending cycle of dive and climb.
To ensure you don’t share a similar fate, we wrote about What to Consider when Choosing a Scuba Regulator and Diving Squad’s Favourite Models!
Or Keep Reading Below for More Info about the Scuba Octopus Setup!n
First Stage Pressure Reduction
This initial stage of pressure reduction takes the super high-pressure air or breathing gas from the tank, and lowers it to an intermediate pressure.
This is the first step in creating breathable air, and it is achieved through a few parts.
When looking at a typical open water style regulator, the first stage connects to four different hoses.
One of these channels the high-pressure air directly from the tank and into a submersible pressure gauge.
The other three hoses channel the intermediate pressure air to the second stage, and to the buoyancy compensator (BC) inflator.
Second Stage - Pressure Reduction
This is the part of the process that turns the pressurized air into something which we can breathe. In the second stage, the intermediate pressure from the first stage is then lowered to an ambient pressure.
The ambient pressure matches the pressure of the water surrounding you, and this is what is safe for the diver to breathe.
This is achieved through the pressurized air traveling through a regulator hose, which then gives the diver access to breathe from.
The second stage can be broken into a primary second stage and an alternate second stage.
These are the same thing really, except that the alternate second stage acts as a kind of emergency air source to those who may have run out of air or in an emergency.
Scuba Regulator Setup: Scuba Regulator Diagram
The regulator in your scuba diving kit is generally made up of five basic scuba diving parts. These different parts are all connected together with hoses, and work together to allow you to breathe.
First Stage
This is the initial mechanism involved in the scuba octopus setup. This part attaches directly to the scuba tank, and does what its name suggests – achieves the first stage of pressure reduction.
The intermediate pressured air then travels through the low pressure (LP) regulator hoses to reach the next parts. Even though this air is of a lowered pressure, it is still not safe for the diver to breathe.
Primary Second Stage
This is the part of the setup which the diver puts in their mouth and breathes from. This part is attached to the first stage by the LP hose.
As the name suggests, this part of the regulator works as the second phase of air pressure reduction, and transforms the air into a breathable ambient pressure.
Alternate Second Stage
This part of the scuba octopus setup, also called a buddy regulator or an alternate air source, is basically the same thing as the primary second stage.
It does the same job through the same process as the primary second stage, however, it is used as a backup.
In the case of emergency, such as a fellow diver running out of air, the alternate second stage can be used to allow them to share from your air tank. This part is also attached to the first stage with a LP regulator hose.
Submersible Pressure Gauge
This part of the scuba octopus setup is crucial for your safety underwater. The submersible pressure gauge and gauge console allow the diver to check how much air they have left in their tank to make sure they don’t just run out of air underwater.
A high pressure (HP) hose connects this pressure gauge to the first stage in the regulator. This hose sends HP air directly from the tank to the gauge.
The gauge console also houses other useful gauges, such as a dive computer, depth gauge or compass.
Low Pressure Inflator Hose
The buoyancy compensator (BC) inflator is fed intermediate pressure air from the regulator first stage through this LP inflator hose. This gives the diver the opportunity to add air to their BC directly from tank when they want to.
Scuba Regulator Parts
The scuba octopus setup consists of five main sections. Within these different sections, there are a variety of important pieces and parts which work together in order for your regulator to be successful. It’s a seriously good idea to get to know your scuba equipment and exactly what it consists of.
First Stage Parts
All of the mechanisms which lower the air pressure to an intermediate pressure are housed in the first stage body.
This is a metal cylinder through which the air enters, the pressure is reduced, and then leaves to go through the second stage.
A Yoke or DIN fitting then attaches the first stage body to the scuba tank. This comes with a Yoke Screw which tightens the regulator onto the tank.
A Dust Cap is a small rubber cap which is positioned over the regulator first stage opening and tightened down using the yoke screw.
This dust cap is crucial as it prevents water from entering the regulator first stage body by sealing closed the opening on the first stage.
Ports and Port Plugs are found all over the first stage body. These are where the different hoses are attached to. If the port is not in use, it will be covered by a port plug.
There are often more ports than what is actually needed, so you can position the hoses in the way they like.
Primary Second Stage Parts
The purge button is found on the face of the regulators second stage. This button allows the second stage to flood with air, forcing any water out of the second stage.
The button is used when the second stage has been removed from the mouth and may fill with water.
The ease of breathing adjustment is found on most regulators, and it allows divers to adjust their breathing resistance through a knob or lever.
This adjustment helps to avoid free flow, which is when the air flows continuously out of the second stage regardless of the diver’s breath.
An exhaust valve is located on the second stage and works to channel any exhaled air bubbles away from the divers face.
This is found below the mouthpiece and helps you to keep a clear vision. Then there is the mouthpiece. This is the part that the diver puts their mouth on to access air.
Alternate Second Stage Parts
This part of the scuba octopus setup works exactly the same way as the primary second stage. While it consists of the same parts, it is connected by a low pressure hose.
An LP hose transports the intermediate air from the first to the second stage. An alternate second stage LP hose is usually longer for ease of use by another diver if needed.
Low Pressure Inflator Hose Parts
Where the low-pressure inflator hose attaches to the buoyancy compensator inflation mechanism, a sleeve is used.
This metallic sleeve needs to be held back when connecting the hose to the BC inflator. They are usually textured for easier grip in the water.
The attachment opening connects the BC inflator to the LP hose. These come in a variety of sizes.
Submersive Pressure Gauge and Console
The Submersive Pressure Gauge (SPG) is what you’ll use to monitor how much air is left in your tank. This gauge is often part of a console which consists of a variety of useful tools to the diver.
These can include a depth gauge to monitor your current depth and maximum depth, the SPG showing you how much air pressure is left in your tanks, a compass and dive computer.
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Scuba Regulator Maintanence
Scuba octopus setups are complex but reliable mechanisms.
The scuba octopus setup should definitely give you years of good use. In order for this to happen though, you’ll need to keep your regulator well serviced and maintained.
Any local dive center should be able to take your dive gear in for all necessary services. Once a year should be enough for most divers, but if you dive more often than most, perhaps more frequent services are necessary.
Dive shops often refer to this service as a “tuneup”. While this sounds simple, there is actually a lot of work that should be done for it. Your entire scuba octopus setup will need to be disassembled, inspected, replaced where necessary, cleaned up and reassembled.
This often includes replacing and lubricating threads and O-rings, tending to any possible salt damage, and adjusting and replacing valves, connections and hoses. Make sure that your gauges are also checked in your annual service!
If you use a more popular brand, you’ll find that it’s actually far easier to service and find parts for them in remote locations. Therefore, if you plan on traveling a lot with your scuba gear and diving in far off places, having a better-known brand may be wise for servicing reasons.
Scuba diving relies heavily on the equipment. In order to maintain a good level of safety, and avoid any possible emergencies, it’s vital to have your gear regularly serviced, checked and tested by professionals.
If you tend to use your diving equipment seasonally, it’s best to have your scuba octopus setup serviced before you put it away for storage. This prevents any salt damage which could occur while it is not in use.
Diving Squad Debriefing
Alrighty, Diving Squad! Now that this mammoth article, jam-packed with everything you need to know about the exciting world of the Scuba Octopus SetUp, has finally reached its end…
Don’t forget to…
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Help Diving Squad with Marine Conservation
EPIC FAIL HUMANITY:
- Over 18 billion pounds of plastic enters the World’s Oceans every year. That’s enough trash to cover every foot of coastline around the world with five full trash bags of plastic (Every. Year).
- As well as containing it’s own toxic chemicals, like BPA, plastic absorbs even more potent toxins from other pollutants in the Ocean such as oil, untreated sewage and radioactive waste.
- Plastic is indestructible and never degrades. Instead it simply breaks down into smaller pieces which accumulate together, en masse.
- Today, each square mile of ocean has over 45,000 pieces of plastic floating in it.
- Plastic is mistaken for food and eaten by marine animals. Because it can’t be digested, it fills their stomachs and causes them to starve to death.
- For those “lucky” individuals that don’t eat plastic, the toxic chemicals present in every part of sea water from plastic, wreck havoc throughout the ecosystem causing changes in animals behaviour, immune systems and reproduction.
- There are 200 known ‘dead zones’, or areas deprived of oxygen and devoid of life, (area between 1 and 70,000 km²), in the world ocean, due to plastic: this number has doubled every decade since 1960.
- Chemicals in heavily polluted waters can make their way back to us and cause serious health issues like reproductive problems, hormonal problems, kidney damage, and nervous system damage.
- It’s estimated that by the year 2050, there will be more plastic in the ocean than fish (by weight). AND IT’S GETTING WORSE
The Time to Act is NOW
To Diving Squad, the grizzly stats above are appalling, tragic and completely UNACCEPTABLE. That’s why we are working hard towards combating plastic pollution in the ocean.
How do we do this? Through spreading awareness, providing informative guides on eco friendly diving and donating 10% of all profits that we make towards combating plastic pollution in the Ocean.
So, how does Diving Squad make money? Through You! Every time you click on one of our painstakingly, yet lovingly researched liveaboard, gear or insurance links and spend money – we earn a % commission thanks to affiliate partnerships.
We then donate 10% of this towards Marine Conservation Schemes that target plastic pollution.
What does this mean? It means that if you book a Liveaboard through a Diving Squad link – some of that money goes directly towards Marine Conservation.
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So help us…help you…help the Ocean. Together, we can do this.
To which Marine Conservation charity do we donate, you might ask? Our squad is already hard at work selecting the ideal candidate. The winner will be announced at the end of 2019. Have a suggestion? We’d love to hear… If we pick your suggestion, there just might be something in it for you…
Contact us at: Alex Hatton: [email protected] (Grand Admiral at Diving Squad).
