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PRT FIRE EXTINGUISHER MODEL RT A400
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Model RT A400 - Halon 1211-1301 Blend Typical use: Cockpit/Cabin. The gaugeless RT A400 is the smallest Halon fire extinguisher available anywhere. It's a great flight bag accessory. These extinguishers contain a unique blend of liquefied gas 1211/1301, two highly effective fire fighting agents. These units are self expelling which means that the pressure remains constant even when the extinguishers are almost empty. |
- 12 year shelf life.
- Agent weight 0.9 lb. / 0.400 kg
- Gross weight 1.2 lb. / 0.530 kg
- Discharge range 4-6 ft. / 1.2-1.8 m
- Discharge time 10-12 sec.
- Height 8.5 in. / 21.6 cm
- Width 3.0 in. / 7.7 cm
- Cylinder diameter 2.0 in. / 5.1 cm
- UL rating 2B:C
- Bracket Single Strap (Standard)
- Extinguishing Agent: 1211 / 1301
- Charge-Kgs (Lbs): 0.40 (0.88)
- Gross wt - Kgs (lbs): 0.53(1.17)
- Pressure psig: 100
- Shell Material: Aluminum
- Handle Material: Plastic

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I had this model for some time mounted in between the seats of my RV6. Well, I finally really needed it! I was burning in new brake linings when a fire broke out in my right main gear. The little RT-400 did a great job putting out the fire. |
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I cant comment on efficiency since I never had to use it (fortunately), but I can comment on the shelf life. I had an A400 that self emptied after 3 years. Not having a pressure gauge to check makes it hard to tell its empty till you take it off the mount and feel how light it is. |
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My RT-A400 leaked out after 2 years...hoping company will replace with something better. |
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Leaked out after 2 years |
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Small and compact. Last on average for 8 years before it falls below the recommended weight of 500 grams. Never had one just discharge on its own. |

We have aircrafts equipped with fire extinguisher RT A400. We checked the weight of A400. The weight was less than the standard weight. Can we recharge the agent? Otherwise should we replace the extinguisher?
The A400 is a sealed unit and cannot be re-charged.
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