NAMAN FIRE ENGINEERS has earned a reputation as one of India’s trusted manufacturers of fire safety solutions. Our portfolio includes
a wide spectrum of products, ranging from fire extinguishers to specialized systems like Water Mist and Fire Suppression.
Strengthening our service capabilities, we are now adding Fire Extinguisher Refilling to our offerings.
When is Fire Extinguisher Refilling Required?
After Every Use
Even if your extinguisher is discharged only once, it loses its full pressure. Refilling immediately ensures it stays ready to protect you in any emergency.
During Scheduled Maintenance
Fire extinguishers require periodic refilling, usually every 1–3 years. This keeps them reliable, effective, and compliant with safety standards.
OUR REFILLING PROCESS
Step 01
The extinguisher is completely emptied—any remaining extinguishing agent is manually discharged. Simultaneously its performance is checked to see how much has been used and whether any functionality has been lost.
Step 02
All external parts are removed: valve, nozzle, hoses, seals. The cylinder is “de-stressed” (in the sense of unloading any mechanical strains) to make sure it’s safe for further inspection.
Step 03
The shell of the extinguisher undergoes hydrostatic or pressure testing at 35 kgf/cm² for 2.5 minutes to check for leaks, burst strength, and weld integrity.
Step 04
After the pressure test, the cylinder is cleaned and then refinished. This typically includes powder-coating (static charge), then baking in an oven at 180 degrees for 10 minutes to cure the coating and give a durable finish.
Step 05
The extinguisher is filled with the correct type of agent (powder, foam, gas, water, etc.), in the correct quantity. The refill process is often vacuum-based to ensure accurate filling.
Step 06
All discharge fitments (nozzles, hoses), O-rings, rubber seals, etc., are replaced. This ensures tightness, correct performance, and prevents leakage.
Step 07
The extinguisher is pressurized with a clean inert gas (e.g., high-purity nitrogen, sometimes mixed with helium) to the rated pressure. This step restores its operational readiness.
Step 08
After pressurization, multiple leak tests are conducted. These include water-submersion or inverted-jar tests, and/or Helium Mass Spectrometer leak detection. Once the extinguisher passes all checks, it is sealed, tagged, and made ready for re-deployment.