• made of Sand-blasted forged brass. • High-performance balanced diaphragm design: The Intermediate Pressure is always constant during the dive at any depth. • ICE Kit: fully isolates all moving parts from contact with the water, ensuring excellent thermal protection in cold water. • Simple and fast maintenance. • HP ports: 2 • LP ports: 4 • Replaceble stainlees-steel Valve Seat: designed to offer great safety, it can be easily disassembled to make maintenance easy.