Half-Face Respirator with Replaceable Filters

Half-face respirators provide reliable respiratory protection against airborne particles, gases and vapours when the hazard is known and oxygen levels are normal. A soft silicone or elastomer face piece seals around the nose and mouth, while one or two replaceable filters or cartridges remove contaminants from the inhaled air. Because only the filters are changed, the respirator is a practical, long-life solution for regular industrial use.

Hamoon supplies respirators and filters certified to EN 140, EN 14387 and EN 143, with filter types for organic vapours (A), inorganic gases (B), acid gases (E), ammonia (K) and particles (P1 to P3), as well as combined filters. Low-profile designs allow use with safety glasses and welding helmets, and exhalation valves reduce heat and humidity inside the mask. These respirators are not suitable for oxygen-deficient or IDLH atmospheres; fit testing, correct filter selection and replacement intervals are essential, and Hamoon engineers can advise on the right filter for each hazard.

Typical applications

• Painting, coating and solvent handling
• Chemical handling and laboratories
• Dusty work in cement, mining and steel
• Maintenance in petrochemical units (where IDLH conditions do not exist)

Request a quote from Hamoon for respirators and replacement filters.

Key points when selecting a Half-Face Respirator with Replaceable Filters

• Select filters by contaminant: A organic vapours, B acid gases, E, K ammonia, P3 particulates.
• Fit testing is essential to confirm a proper face seal.
• In high concentrations or oxygen deficiency, use SCBA instead of filter respirators.
• Set a filter change-out schedule based on concentration and exposure time.

Half-Face Respirator with Replaceable Filters — frequently asked questions

Does a filter respirator protect against H2S?

Type B filters only suit low concentrations or escape; high H2S risk requires self-contained breathing apparatus (SCBA).

When should respirator filters be changed?

Particle filters when breathing resistance increases; gas filters per the change-out schedule or as soon as the contaminant is smelled or tasted.