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The Mares XR Over Pressure Relief Valve fits into one of the low pressure ports of your first stage and acts as a fail safe against free flows caused by excessive intermediate pressure and intermediate pressure creep that can occur in a malfunctioning first stage or a first stage that requires a service.
Rather than the excess pressure being forced out of a second stage which could cause a free flow, the over pressure relief valve will be forced open at 13bar (+/- 0.5 bar).
30 DAY RETURNS
If you change your mind, it doesn’t fit, or you become inflicted with buyer’s regret - that's OK!
Mike's Dive Store offer an extended returns policy of 30 days - so you can be rest assured if the suit, piece of diving equipment or gift doesn't suit then just send it back and we will either exchange it or offer a full refund less any postage costs. Too easy!
Please note that there are some special order items on our website that will be subject to a 20% re-stocking fee but we will let you know about these items before we special order them so that you are aware of this. If this is the case we can always help with correct sizing so that we minimise the risk of return.
For step-by-step instructions click here