Technical Reference — Dust Filtration Components
Specifications, material selection guides and selection criteria for pulse jet valves, filter bags, diaphragm membranes and cage frames.
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How to use this page: Use the technical tables below to identify the correct specification for your baghouse application. If you are unsure, send your operating conditions to our engineer and we will recommend the appropriate product.
🔧 Pulse Jet Valve — Technical Specifications
| Parameter | 1″ Valve | 1.5″ Valve | 2″ Valve | 2.5″ Valve |
|---|---|---|---|---|
| Port Size | DN25 | DN40 | DN50 | DN65 |
| Operating Pressure | 0.4 – 0.7 MPa (4 – 7 bar) | |||
| Media Temperature | -10°C to +60°C (compressed air) | |||
| Pulse Duration | 60 – 100 ms (adjustable by timer) | |||
| Coil Voltage Options | 24V DC / 110V AC / 220V AC | |||
| Body Material | Aluminum alloy | |||
| Seal Material | NBR (standard) / Viton (optional) | |||
| Connection Type | NPT / BSPP threaded | |||
| Compatible Brands | ASCO, Goyen, DMF, SBFEC, Taeha | |||
Replacement guide: When replacing a valve, confirm port size, coil voltage, and thread type. Our valves are designed as drop-in replacements and do not require manifold modification.
🏭 Filter Bag Media — Selection Guide
| Material | Max Temp (Continuous) | Max Temp (Peak) | Key Properties | Recommended For |
|---|---|---|---|---|
| Polyester (PE) | 130°C | 150°C | Good mechanical strength, cost-effective | General industry, cement, feed mills |
| Polypropylene (PP) | 90°C | 100°C | Excellent chemical resistance, low temp | Chemical, acid environments |
| PPS (Ryton) | 160°C | 190°C | Chemical & hydrolysis resistance | Coal-fired boilers, incinerators |
| Nomex (Aramid) | 200°C | 220°C | High temp stability, moderate cost | Steel, cement, hot gas filtration |
| Fiberglass | 260°C | 280°C | Extreme heat resistance | Power stations, cement kiln exit |
| PTFE Membrane | 250°C | 260°C | Surface filtration, very high efficiency | Fine dust, emission-critical applications |
| Anti-Static PE | 130°C | 150°C | Carbon-blended, static dissipative | Wood/MDF, flour, feed processing |
| P84 (Polyimide) | 240°C | 260°C | Excellent chemical + temp resistance | Waste incineration, mixed industrial |
Selection tip: Always specify the continuous operating temperature, not just peak temperature. Also confirm whether there is condensation risk — moisture significantly affects bag life for PE and PP media.
⚙️ Diaphragm Membrane — Material Selection
| Material | Temperature Range | Fluid Compatibility | Typical Application |
|---|---|---|---|
| NBR (Nitrile) | -20°C to +100°C | Air, mineral oil | Standard industrial baghouses |
| EPDM | -40°C to +120°C | Water, steam, ozone | Outdoor or humid environments |
| Viton (FKM) | -20°C to +180°C | Acids, hydrocarbons, solvents | Chemical plants, high-temp systems |
Replacement note: Membranes should be replaced as a set for each maintenance cycle. Mixing new and old membranes of different ages in the same row leads to inconsistent pulse energy.
🏗️ Cage Frame — Specification Reference
| Specification | Details |
|---|---|
| Wire Material | Low carbon steel (galvanized), SS304, SS316 |
| Surface Treatment | Hot-dip galvanized / silicon powder coated / bare SS |
| Wire Diameter | 3mm, 4mm, 5mm (custom on request) |
| Standard Lengths | 1m, 1.5m, 2m, 2.5m, 3m, 3.6m (custom available) |
| Standard Diameters | 120mm, 130mm, 150mm, 165mm, 200mm (custom available) |
| Venturi / Top Ring | Snap-in ring, flange ring, integrated venturi (to spec) |
| Weld Quality | All junctions spot-welded; burr-free finish required |
Critical dimension: Cage outer diameter should be 6–10mm less than filter bag inner diameter to allow free installation and prevent radial abrasion during pulse cleaning.
📐 Compressed Air Requirements for Pulse Cleaning
Recommended Air Pressure
| Operating pressure | 0.5 – 0.6 MPa |
| Minimum pressure | 0.35 MPa |
| Maximum pressure | 0.7 MPa |
| Air quality | Dry, oil-free (ISO 8573-1 Class 3 or better) |
| Dew point | Min. 10°C below lowest gas temp |
Pulse Cycle Settings (Typical)
| Pulse duration | 60 – 100 ms |
| Interval between pulses | 3 – 10 seconds |
| Cleaning mode | Offline or online (system-dependent) |
| Timer type | Sequential or differential pressure |
Signs of Insufficient Pulse Energy
• ΔP continues to rise after cleaning cycle
• Bags accumulate dense dust cake
• Emission levels increase
• Bags collapse inward during cleaning
Causes: low compressed air pressure, undersized valve, clogged nozzle, damaged membrane
Signs of Excessive Pulse Energy
• Filter bags show mechanical damage at seam
• Premature bag abrasion at cage contact points
• High compressed air consumption
• Bag mouth deformation
Causes: over-pressure, wrong valve size, very short pulse interval
Need a Specification Sheet for Your Application?
Share your operating conditions and we’ll send you the matched product datasheet with pricing.
