![Mares XR Over Pressure Relief Valve - Mike's Dive Store](http://rabbit-mp.myshopify.com/cdn/shop/products/over-pressurisation-valve_553x553_crop_center.progressive.jpg?v=1623904251)
![Mares XR Over Pressure Relief Valve - Mike's Dive Store](http://rabbit-mp.myshopify.com/cdn/shop/products/over-pressurisation-valve_120x120_crop_center.progressive.jpg?v=1623904251)
- Info
- Reviews
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).
Features
- Standard LP port thread, 3/8 UNF
- Set to 13bar, nominally, with +/-0.5bar tolerance
- Chrome plated brass
- Standard regulator spring