The desiccant respirator 1299653 (corresponding model BDE200×2W0.0) is an air dehumidifier/dustproof breathing cap with color-changing silica gel. It is primarily used in enclosed systems such as gearboxes and hydraulic tanks to prevent the entry of humid air and solid particles.

1. Filtration Accuracy

- Air Filter Layer: 3 µm (polyester filter cloth, absolute filtration)

- Desiccant Layer: Granular silica gel, water absorption ≥23 g (depending on model)

- Overall Range: 0.1–500 µm optional

2. Operating Parameters

- Rated Flow Rate: 6–100 L/min (@1 psid)

- Operating Pressure: ≤0.2 MPa (instantaneous 1 MPa)

- Operating Temperature: -30 ℃～+90 ℃ (housing is high-strength plastic)

3. Structure and Materials

- Housing: High-strength transparent plastic, oil-resistant and UV-resistant

- Filter Media: 3 µm polyester filter element + granular silica gel (blue→pink indicator) + activated carbon layer (oil mist removal)

- Connection Thread: Standard thread, commonly G3/4″ or NPT 3/4″, can directly replace ordinary breathing caps

4. Testing Standards

ISO 2941–2943, 3723, 3724, 3968, 4572, 16889 (Rupture resistance, integrity, compatibility, fatigue, differential pressure-flow rate, multiple passes)

5. Typical Applications

Wind turbine gearboxes, marine steering gear/anchor winch hydraulic stations, power plant coal mill reducers, steel mill rolling mills, tunnel boring machines, mining equipment, paper machines, chemical reactors, and other oil tanks/gearboxes requiring dry air.

Leah     Sales Manager

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