Over Pressure Relief Valve

Product No: 416404


Mounted on the first stage of the canister for the inflation of the drysuit, it guarantees total safety to any technical diver.

Product Information


The overpressure valve is an indispensable element for the safety of any technical diver. It guarantees safety where a second stage is not mounted on the first stage. Mounted on the first stage of the canister for the inflation of the drysuit, it guarantees total safety. It also finds its use in early stages of rebreather.

The main features of the Overpressure valve are:
• Standard thread for low pressure outlet, 3/8 unf
• Set at a nominal pressure of 13 bar, with a tolerance of +/- 0.5 bar
• Chrome plated brass
• Standard dispenser spring


Chrome-plated brass

Delivery & Returns


Online purchases on mares.com are enabled for Italy, France, Spain, Germany, Austria, Netherlands, Luxemburg, Belgium and Finland. Some products from the catalogue are only available to purchase at an authorised Mares Dealer.

Products shipped in Italy are entrusted to Bartolini couriers. Products shipped in other countries are entrusted to DHL couriers.

Delivery times are 3-5 working days.



If you are not satisfied with your order, you can return it quickly and easily.

You can decide to return any products purchased on mares.com within 30 days of delivery. To return items, use the same box they were received in, complete the returns label found here with shipping details and attach it to the box. Remember to insert the delivery number found on page 1 of the delivery documents.


To allow you greater freedom, we have not chosen a courier service with which you need to return the package, you are free to choose your preferred service provider.

Please remember that shipping costs are your responsibility.


You will receive the total refund on the same payment method you used to place your order, within 14 days after your return has reached our warehouse. 


At the moment, we cannot offer exchanges on our products. If you would like a different size, please return the article for a refund and purchase a new size. If you still have any doubts, you can write us an email at shop@mares.com, our Customer Service team will be happy to help.