I-st stage R4 TEC - EN250A

The I-ST STAGE R4 TEC – EN250A is a compact high-performance regulator specifically designed for cold water diving and technical diving configurations. Thanks to its compact size and outstanding breathing performance, this regulator is ideal for decompression stage tanks and single tank setups.

The balanced diaphragm design combined with the dry chamber and additional cold water kit ensures reliable performance in demanding diving conditions. The regulator exceeds the requirements of the latest EN250A standard.

Key features

  • Compact and lightweight design
  • Specifically designed for cold water diving
  • Ideal for stage/decompression tanks
  • Outstanding breathing performance
  • Complies with EN250A standard
  • Balanced diaphragm system
  • Dry chamber with additional cold water kit
  • Manufactured from marine bronze
  • 2 HP ports
  • 4 LP ports
  • Maximum operating pressure: 300 bar

Recommended configurations

  • Stage tank: perfect
  • Single tank: good
  • Double tanks: very good
  • Sidemount: not recommended
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