The Hammar H20 is a hydrostatic release unit (HRU) designed for safety appliances like liferafts. It automatically releases the equipment if a vessel sinks. Key features include:
Activation: Releases at a depth of 1.5-4 meters due to water pressure.
Construction: Made of fiberglass-reinforced nylon to prevent corrosion.
Maintenance: Requires replacement every two years, with no need for annual servicing or spare parts. The old unit is 97% recyclable