Gul Purge Dive Mask: How to Clear Water and Fit It Right (2026)

Updated November 2026

A gul purge dive mask uses a small one-way valve on the lower part of the frame so you can blow water out of the mask without tipping your head back or lifting the skirt. This guide explains what the purge valve does, how to check that a gul purge dive mask fits your face, and how to clear it confidently underwater. The steps below work for most women, including those with narrower faces or smaller noses.

How a Purge Valve Works

A purge valve sits at the bottom of the mask lens. When you exhale gently through your nose while pressing the mask against your face, air pushes past the valve and forces water out through the skirt. Because you exhale through the nose rather than blowing up toward the lens, the valve clears the mask faster and reduces the chance of breaking the seal.

Shopping for one? See our guide: 6 Best Dive Masks with Purge Valve: Top Picks Compared (2026).

The valve only works if the skirt seals well against your face. A purge valve cannot fix a poor fit, so start with fit before you worry about clearing.

Step-by-Step: Fit and Test a Gul Purge Dive Mask

1. Hold the mask against your face without the strap. Breathe in gently through your nose. The mask should stay on your face with no air leaking in at the edges.
2. Check the nose pocket. Your nose should sit inside the lens area with room to pinch the nose if needed. If the bridge presses hard on your nose, try a different size or model.
3. Fit the strap so it sits low on the back of your head, below the ponytail line if you wear one. A strap that sits too high pulls the skirt away from your cheeks.
4. Tighten the strap evenly on both sides. Adjust in small increments until the skirt seals without feeling clamped.
5. Test the seal by breathing in through your nose while the mask is on. A well-fitting mask holds a light suction for several seconds with no air entering.
6. Check the purge valve. Lightly press the valve to confirm it moves freely and is not stuck or cracked.

Clearing Your Mask Underwater

Once you have a good fit, practice clearing the mask in shallow water before you dive deeper. Work through these steps in a pool or calm, shallow area.

1. Keep your head level and look slightly upward.
2. Press the top of the mask lightly against your face with one hand, while keeping the skirt sealed at the bottom.
3. Breathe out gently through your nose. The water should flow out of the purge valve.
4. Repeat as needed. Most divers need only one or two short exhales to clear a small amount of water.

If water keeps flooding in, the problem is usually the seal, not the valve. Stop, adjust the strap, and check the skirt against your face before trying again.

Common Mistakes to Avoid

• Blowing hard into the mask. A forceful exhale can break the seal and let more water in. Use a slow, steady breath through the nose.
• Choosing a mask by lens size alone. The fit of the skirt and nose pocket matters far more than how large the lens looks.
• Overtightening the strap. A tight strap can create gaps at the cheeks and make the skirt bunch up.
• Skipping the pool test. Practicing clearing in shallow water helps you learn the technique before you need it at depth.
• Ignoring a cracked or stiff valve. Replace a damaged valve or mask rather than hoping it will hold.

Recommended Gear

A good mask fit comes first, but a few supplies make maintenance easier. If your mask fogs or leaks, a dedicated seal product can help. Clean lenses before each dive so the view stays clear.

• Anti-fog solution: Helps keep the lens from clouding during the dive. View on Amazon
• Mask cleaning solution: Removes oils and residue that can break the seal. View on Amazon
• Mask storage case: Protects the frame and valve from damage between dives. View on Amazon

FAQ

Can I use a gul purge dive mask if I wear glasses?

Prescription lenses are available for many masks, but check with an optical specialist or dive shop to confirm the lens options for your specific model before buying.

How often should I replace the purge valve?

Replace the valve or mask when it cracks, sticks, or no longer returns to its closed position. Inspect it before each dive trip.

Why does my mask still leak even with a purge valve?

Leaks almost always come from a poor skirt seal or an incorrect strap position. Recheck the fit, then clean the skirt and try again. If problems continue, consult a dive professional for a fitting.

Conclusion

A gul purge dive mask is easy to clear once the fit is right. Start with a careful seal test on land, then practice clearing in shallow water. With those two steps, the purge valve becomes a reliable tool rather than a source of frustration.

Related reading

• Prescription Dive Mask with Purge Valve: 7 Best Picks for Clear Vision (2026)
• Trident Scuba Dive Mask Seal Stick: How to Fix and Prevent Leaks (2026)
• Tinted Dive Mask vs Clear: Which Lens Suits Your Diving? (2026)
• Tilos Universal Dive Mask: 5 Best Picks for Every Fit and Dive Style (2026)

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