Contact
HFFF extinguishant solution for refilling the STSM 2000 hyperbaric foam fire extinguisher, suitable for Class A and B fires.
If you have any questions let us know
This Fire Extinguisher Foam 3L provides the HFFF extinguishant solution used to refill the STSM 2000 hyperbaric foam fire extinguisher. The STSM 2000 uses non-toxic aqueous foam for Class A and B fires and supports both intermittent and continuous discharge.
For each STSM 2000 refill, add 100 ml of extinguishant solution, Part No. STSM 2001, followed by 1.9 litres of water. This mixture provides the extinguisher’s stated 2-litre extinguishant volume. The STSM 2000 has a total cylinder volume of 3 litres and a maximum working pressure of 100 bar.
Before starting the refill procedure, make sure the extinguisher is completely discharged. Remove the discharge hose from the discharge valve, then remove the discharge valve from the cylinder. Rinse both the valve and the cylinder with fresh water.
Pour 100 ml of the HFFF extinguishant solution into the cylinder and add 1.9 litres of water. Clean the discharge valve O-ring and seat with a clean, lint-free cloth. Lightly lubricate the O-ring with Christo lube or Krytox before replacing the discharge valve.
Connect charging adaptor Part No. STSM 25003. Hold the trigger open and carefully charge the extinguisher to a maximum of 100 bar. Use a gas compatible with the chamber atmosphere, such as bottom mix, helium or nitrogen as applicable. The oxygen content of the charge gas must not exceed 21% by volume.
After charging, close the trigger and fit the safety pin. Vent and remove the charging adaptor, then check the extinguisher for leaks with a soapy water solution. Finally, replace the discharge hose.
The STSM 2000 has a maximum working depth of 450 metres and an operating temperature range of 2°C to 50°C. Before a dive, its charge pressure should measure 70 to 100 bar. For dives deeper than 200 metres, the charge pressure must measure 95 to 100 bar.
The extinguisher is intended for Class A and B fires and must not be used on electrical fires over 24 volts. Its refillable design allows the HFFF extinguishant solution to form part of the specified maintenance and recharging process.
After skin contact, wash the affected area with water. Rinse contaminated clothing before reuse. After eye contact, flush the eye with plenty of water for at least 10 minutes. After swallowing, wash the mouth with water. Seek medical advice if pain occurs and persists.
