Description

Technical Parameters

The Multi-Purpose Dust-Filtering Respirator is a reusable half-mask designed for occupational respiratory protection against solid and liquid aerosols, fine industrial dusts, and mineral particles.

Key Features

Dual Bayonet Ports

Connects twist-lock particulate filters and pre-filter attachments securely.

TPE Sealing Flange

Conforms to facial contours to minimize inward leakage.

Downward Exhaust Vent

Channels breath moisture downward to prevent safety eyewear fogging.

Four-Point Harness

Distributes mask weight evenly across the head.

Low-Profile Design

Integrates with protective face shields and safety helmets.

Design & Components

Facepiece	Medical-grade thermoplastic elastomer, stable between -10°C and +50°C.
Filter Interfaces	High-impact polymer bayonet connection tabs.
Valves	Silicone inhalation and exhalation diaphragms.
Headband	Woven polyester-latex elastic straps with adjustable locking buckles.

Technical Specifications

Parameter	Performance Value	Reference Standard
Mask Type	Reusable Half Mask	EN 140:1998
Filter Efficiency	≥ 99.95% (P3 R)	EN 143:2000
Inhalation Resistance (30 L/min)	≤ 12 Pa	EN 140 Section 7.12
Inhalation Resistance (95 L/min)	≤ 42 Pa	EN 140 Section 7.12
Exhalation Resistance (160 L/min)	≤ 110 Pa	EN 140 Section 7.12
Total Inward Leakage	< 2%	EN 140 Fit Test Protocol
Facepiece Weight	118 g	Without filters
Connection Type	Twin Bayonet	Standard Interface

Applications & Operational Limits

Intended Applications

Concrete, stone, and mortar cutting or surface grinding.
Hardwood, MDF, and plywood processing or sanding.
Metal polishing, foundry work, and manual arc welding particulate environments.
Mining, bulk aggregate crushing, and dry powder handling.

Operational Limits

Do not use in oxygen-deficient atmospheres containing less than 19.5% oxygen.
Do not use in environments containing hazardous chemical vapors or gases without combined gas cartridges.

Compatible Filters & Accessories

Item Type	Model	Protection Class	Target Media
Particulate Filter Pad	P301-P3	P3 R High Efficiency	Fine toxic dust, asbestos, metal fumes
Pre-Filter Pad	PF01-P2	P2 R	Coarse sawdust, masonry debris
Pre-Filter Retainer	R01-Bayonet	Standard	Secures pre-filter pads over filter discs

Use & Maintenance

Inspection

Examine the elastomer flange for tears, verify valve membranes lie flat, and check headband elasticity.

Cleaning

Remove filter elements. Wash mask body in warm water below 40 ℃ using mild soap. Air dry away from direct sunlight.

Filter Replacement

Replace particulate filters when breathing resistance increases or when filter media shows physical damage.

Certifications

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Supply & Manufacturing Details

Commercial Terms	Details
Customization Options	Custom facepiece color matching, logo surface printing, custom packaging, printed user manuals
Minimum Order Quantity	1,000 units standard; 3,000 units for custom color and branding
Standard Packaging	1 unit per sealed bag, 20 units per inner box, 80 units per master carton
Carton Dimensions & Weight	58 cm × 42 cm × 38 cm / Gross Weight: 13.5 kg
Production Lead Time	15–20 days standard production; 25–30 days custom orders

FAQ

Q: What filtration efficiency does this mask deliver against fine airborne dust?

A: Equipped with P3 R class filters, the unit achieves a minimum filtration efficiency of 99.95% against airborne solid and liquid aerosols down to 0.3 microns under EN 143 test protocols.

Q: Is private labeling and custom color production supported?

A: Custom color molding, surface logo printing on valve covers, customized outer packaging artwork, and user manuals are provided under OEM manufacturing contracts.

Q: How does breathing resistance remain low during continuous physical operation?

A: Dual bayonet filter ports split airflow across two filter elements, lowering inhalation resistance under 42 Pa at 95 L/min to reduce user respiratory fatigue.

Q: Is the facepiece material safe for sensitive skin during daily shift wear?

A: The mask flange is injection-molded from latex-free, medical-grade thermoplastic elastomer, reducing skin contact irritation during extended use.

Q: What is the recommended service lifecycle of the mask body?

A: With regular cleaning and dry storage, the elastomer body and valve diaphragms maintain material elasticity and seal integrity for 12 to 24 months of operational use.

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