The SR2 regulator continues the legacy the SR1 created. It packs advanced technology into a compact case, employing contemporary styling and utilizing a multitude of cutting-edge materials. The SR2 is the ONLY Flow Through Piston Regulator that is both environmentally sealed and internally dry, and still offers a depth compensation mechanism. This is no easy task to achieve. Sherwood’s Three Pin Link (3PL) transfers the environmental pressure to the piston and provides consistent flow at any depth.