A buoyancy control device may include an input for a second rate. The second rate of ascent may be selected by using the first input means 81, which may be a rate selection switch. Alternatively, the second rate of ascent may be selected by bypassing the first selected rate. Depending on the circumstance, a buoyancy controller device could include several features. One embodiment includes a buoyancy device and a weight belt.
Weight belts
The centre of buoyancy for a diver is not within his control. However the suit's weight, and the position in the cylinder, are within his reach. Divers may also have additional control over their buoyancy with weight belts, integrated BC weights, and other weight belts. These buoyancy control devices can be worn at the waist, above your hips, and below your knees to give you a neutral trim.
Dump valves
A BCD has two separate ways to control your buoyancy. Either you can completely deflate your air bladder or add air to refresh it. Dump valves can be attached to a string to regulate the level of air. A majority of BCDs have at least one dump valve on each shoulder. When diving, you can use the dump valves to deflate the air bladder to maintain a comfortable buoyancy.
Jacket-style buoyancy control device
A jacket-style buoyancy control device (BCD) is a good investment, regardless of whether you are a novice diver or an expert diver. Many BCDs can be worn over a swimsuit so that the weight stays in place. Some models come with front weight pockets and rear trim pockets for easy access to your weights. Jacket-style BCDs have a cushioned hardback that is comfortable and can be adjusted to adjust the buoyancy.
Attachment systems BC
A BC vest is a type that scuba divers use to keep buoyant and prevent from sinking. The BC holds the diver, SCUBA tank and other equipment securely in place. BCDs can be similar in design, but the functions and functionality of each model will differ. It is important that you know how to use your BC correctly, and have a backup plan in place for any malfunctions.
Pneumatic valves control depth adjustment
Pneumatic valves are at the heart and soul of industrial processes. They control fluid flow by using the force-balance principle. Three ports make up a pneumatic valve: an air supply port, a control signal output and an exhaust. The control device is controlled by a lever arm. The flexible diaphragm on the arm changes the pressure depending on how an external sensor positions it. When the sensor's pressure rises, the left end of the lever arm lifts and opens the supply air valve. The controlled device will move when there is more pressure.