The difference between a purge mask and a regular scuba mask

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Scuba masks are a crucial piece of diving equipment, allowing divers to maintain a clear view of their surroundings while underwater. However, not all scuba masks are created equal, and there are different types of masks available to suit different diving needs. One such type of mask is the purge mask. In this article, we will discuss the differences between a purge mask and a regular scuba mask.


What is a Scuba Mask?

A scuba mask is a piece of diving equipment designed to fit over the eyes and nose, allowing the diver to see underwater. It consists of a frame that holds the lenses in place, a skirt that creates a watertight seal against the face, and a strap that secures the mask in place. Scuba masks are available in a variety of styles, sizes, and materials to suit different diving needs.


What is a Purge Mask?

A purge mask is a type of scuba mask that features a special valve designed to allow the diver to clear water from the mask without having to remove it from their face. The valve is typically located at the bottom of the mask and allows the diver to exhale through their nose, forcing the water out of the mask. This eliminates the need to remove the mask and clear it manually, which can be distracting and time-consuming.


Differences Between a Purge Mask and a Regular Scuba Mask

Purge Valve

The most significant difference between a purge mask and a regular scuba mask is the presence of a purge valve. A purge mask features a one-way valve that allows the diver to exhale through their nose and push any water in the mask out. This ensures that the mask stays clear, allowing for clear visibility while diving. A regular scuba mask, on the other hand, does not have a purge valve and requires the diver to remove the mask and clear it manually if water enters.


Volume

The volume of a scuba mask refers to the amount of air space between the lenses and the diver's face. A lower volume mask has less air space, which reduces the amount of air needed to equalize the pressure inside the mask. This makes the mask easier to clear and provides a wider field of vision. Purge masks are typically designed with a low volume to reduce the amount of air needed to clear the mask. Regular scuba masks are available in both low and high volume options.

Comfort

Purge masks are designed to provide a comfortable fit for the diver. The mask skirt is typically made of soft and flexible materials, such as silicone, that contour to the face and create a watertight seal. The presence of a purge valve also eliminates the need to remove the mask and adjust it manually, providing a more comfortable diving experience. Regular scuba masks are also designed to be comfortable, but the absence of a purge valve means that they may require more adjustments while diving.


Price

Purge masks are typically more expensive than regular scuba masks due to the added functionality of the purge valve. The purge valve adds an extra component to the mask, increasing the cost of production. Regular scuba masks are available at a range of price points, with basic models being relatively inexpensive.


Suitability for Diving Conditions

Purge masks are ideal for diving conditions where water may enter the mask, such as when diving in rough waters or performing activities that involve a lot of movement. The presence of a purge valve ensures that the mask stays clear and provides clear visibility at all times. Regular scuba masks are suitable for a range of diving conditions but may require more adjustments and clearing if water enters the mask.


Conclusion

In summary, a purge mask and a regular scuba mask are both critical pieces of diving equipment, allowing divers to maintain a clear view of their surroundings while underwater. The primary difference between the two is the presence of a purge valve in the purge mask, which allows the diver to clear water from the mask without removing it. Purge masks are typically more expensive than regular scuba masks but provide a more comfortable and convenient diving experience, particularly in conditions where water may enter the mask. Regular scuba masks are suitable for a range of diving conditions, and low volume options are available for those who require a wider field of vision. Ultimately, the choice between a purge mask and a regular scuba mask will depend on the individual's diving needs and preferences.

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