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Decathlon SNK520 Snorkel w/ Purge Valve & Wave Guard

Sale price: $8.00 Regular price: $12.99

A snorkel with valve to easily remove water, it also has a flexible hose for improved positioning around the face with the mask on.

Color: Select a color
Size: Select a size
Sale price: $8.00 Regular price: $12.99

Free shipping over $35

Final Sale: No returns or exchanges

See our return rules

Free pickup

San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8544771

Product Videos

Product Features

A photo of the Decathlon SNK520 Snorkel w/ Purge Valve & Wave Guard in use

Decathlon SNK520 Snorkel w/ Purge Valve & Wave Guard | Snorkel with valve for your 1st dives to explore a few metres below the water’s surface.

A snorkel with valve to easily remove water, it also has a flexible hose for improved positioning around the face with the mask on.

Water drainage system

Snorkel purge valve facilitates water expulsion and minimises leftover water.


Wave guard limiting water entry from the top of the snorkel in rough seas

Mouth comfort

Orthodontic silicone mouthpiece for maximum comfort.

Anatomical design

Flexible tip for better positioning on the face and in the mouth.

Easy breathing

The snorkel's volume is adapted to the adult user's morphology.

Product Customer Reviews

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906 Reviews
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Decathlon  SNK520 Snorkel w/ Purge Valve & Wave Guard,storm gray
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Does not come with attachment to hook on mask!

We were surprised to discover that there is no bracket supplied with the Freediving Snorkel for Adults FRD120S/N: 000000749047 Consequently it can't be attached to the diving mask buckle. So we will have to come back all the way to Emeryville for refund and exchange as Decathlon SF Market St does not carry any other better snorkel (Like the 520). Bummer!

Not great as it fills with water easily

Not great as it fills with water easily In choppy water.

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Leaks Water

I used this for approximately 2 months. Then it started to leak water.

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Hi Victoria,

Thank you for your feedback :) Apologies that you were not fully satisfied with our quality.

Victoria, could you please elaborate on how the product did not fulfill your needs/requirements? It will help me understand what we can fix and how we can provide a better product next time. Additionally, we would request you to please bring back the product to the store so our team can check it. If it's a genuine manufacturing defect, we can exchange/return the same for you.

Hope this helps!



​Commercial Director & Buyer - Water Sports 


Great to you very comfortable and the clear glass is great for seeing through

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No Shoe Laces?

Just bought two of these snorkels as well as two masks and two pairs of flippers. Imagine our surprise/shock when we unwrapped them at home, to find that the mask to snorkel to attachment clip is an extra, to be purchased separately. I cannot find any mention of this fact in the technical details. Had we just packed them away for out coming holiday's it would have been a big disappointment. I have bought several sets over the years from various manufacturers and never had an issue. For me this is a daft as buying a pair of shoes only to find out that the laces are an extra. If the omission can be justified by costing, there should be a clear notification that the clip needs to be purchased.

Good quality and robust

Snorkel just felt good quality.

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Pretty good piece of kit.

The valve worked fine (they can leak if badly made), and the kids loved that when you blow through it jets the water sideways.... Good shape, comfortable mouthpiece, good visibility for the end of the tube. Good piece of kit

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Good but would be better if it had a hook

For 2019 the snorkels don’t have a hook to attach to the mask strap. Yes you can slip the snorkel through the loop in the strap. But it is nowhere near secured as well as when there was a simple hook attached.

Great snorkel! But..

I have been very satisfied, good quality snorkel. Haven’t yet used during the wavy water. Works perfectly on the calm open water. Only issue is, does not have any ring/ hook to attach a mask. Had to go to a dive shop to buy a rubber dibble o ring in order to fix it on my mask. Such a simple thing but a major blow! Would have given 5 starts otherwise..

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Hello Vladimir,

Thank you for supporting Decathlon Hong Kong and your feedback on your experience with our product.

We sincerely appreciate your insight because it helps us build a better product offer.

*The rubber dibble o ring will be arrive on the middle of MAY.*

If you have any more questions, comments, or concerns or compliments, please feel welcome to reach back out as we would be more than happy to share and assist.

Stay healthy and safe dive!


Eric Cheung 

Decathlon Hong Kong Diving Team

King chun


Very useful

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Very useful

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Best snorkel pipe and I bought to use in Thailand

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Superb for the snorkelling as well as diving courses.

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good product.

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Additional Product Information


Tube (For snorkel): 100.0% Polypropylene ; Deflector (For snorkel): 100.0% Polycarbonate ; Snorkel mouth piece: 50.0% Silicone, 50.0% Polycarbonate ; Tube connector (For snorkel): 100.0% Silicone


When Snorkelling, water can enter the snorkel due to immersion or splashing. The valve located at the bottom of the snorkel makes it easier to expel water. Thanks to the valve, most of the water is drained from the bottom, which means the user does not have to blow out so hard. This is unlike a conventional snorkel where the water is drained from the top.

How to use the valve

Simply blow out gently to empty the snorkel through the valve. After breathing out, be careful when you breathe back in. Inhale slowly as some residual water can remain in the snorkel. If in doubt, do not panic; raise your head out of the water and the snorkel will empty itself instantly through the valve.High-speed intensive swimming is not recommended as it can move the valve and cause water to enter.

Valve maintenance

Sometimes sand or salt gets stuck between the valve and the hard part of the snorkel, this prevents the valve from correctly lying flat and ensuring a watertight seal. In this case, simply rinse the snorkel thoroughly with clean water and check that the valve lies flat.

Breathe easily

With its comfortable mouthpiece and the correct size of the snorkel, you can breathe safely.


Silicone is an extremely flexible material. The silicone mouthpiece provides increased mouth comfort.

0% pvc

This product contains no PVC.


The mouthpiece is the part of the snorkel that is placed in the mouth. Its specially designed shape makes it one of the most comfortable snorkels for your mouth.

Wave guard

The deflector is the part located at the top of the snorkel. Its curved shape creates a protection limiting the inflow of water through the top of the snorkel.


Snorkel certified compliant with safety requirements according to European EN 1972 standards. Certified by the INPP (French professional diving institute).

Storage instructions

We advise you to store the snorkel in a dry place away from direct light.



Superior quality. Unbeatable prices.

For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

Decathlon makes the difference
  1. product-research

    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

  4. laptop-checkout

    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual