This article's table of contents introduction:
- Key Specifications (Typical for HG785 Series)
- Primary Applications
- Where to Find/Buy the HG785
- Critical Cautions
This is a request for information about a specific industrial product. It appears you are looking for specifications, applications, or sourcing details for the HG785 Explosion Proof Blower.
Based on the model number and the designation "Explosion Proof," this is typically classified as a low-voltage, high-pressure DC blower (often a brushless motor) designed for use in hazardous environments (ATEX or Class I/II Div 1/2), such as oil & gas, mining, chemical processing, or marine applications.
Here is a breakdown of the typical specifications and critical information for this model.
Key Specifications (Typical for HG785 Series)
- Motor Type: Brushless DC (BLDC) or Brushed DC Motor (Check specific variant).
- Voltage: Typically 12V, 24V, or 48V DC (24V is most common for industrial/mobile explosion-proof systems).
- Airflow: High static pressure vs. volume. Usually 20-45 CFM (depending on back pressure and exact impeller design).
- Static Pressure: Strong; capable of handling duct restrictions. Typically 5 - 1.5 kPa or higher.
- Explosion Proof Rating: Common ratings include:
- ATEX: II 2G Ex d IIC T6 (Gas/Dust)
- IECEx: Ex d IIC T6
- UL/CSA: Class I, Division 1, Groups C, D; Class II, Division 1, Groups E, F, G.
- Key Feature: Sparkless construction, sealed motor housing, temperature limited to T4/T6 rating.
- Ingress Protection: Typically IP66 or higher (dust-tight and protected against powerful water jets).
- Noise Level: Variable, usually 55-70 dBA (depending on speed and pressure).
Primary Applications
Because it is explosion-proof and DC-powered, the HG785 is used where flammable gases, vapors, or dusts are present and regular AC power is not available or safe.
- Mining: Ventilation for confined spaces, methane gas extraction.
- Oil & Gas: Tank venting, vapor recovery, purging of equipment (e.g., gas analyzers).
- Chemical Processing: Fume extraction from reactors or storage containers.
- Marine: Bilge venting or battery compartment ventilation on vessels carrying hazardous cargo.
- Mobile Equipment: Sweepers, mobile vacuum trucks, and forklifts in hazardous zones.
- Medical/Defense: Lightweight portable ventilation systems for aircraft or armored vehicles.
Where to Find/Buy the HG785
This is a niche, specialized industrial component. You will not find it on Amazon or general electronics retailers.
- Authorized Distributors: Check with major explosion-proof equipment suppliers like:
- AMETEK (Gresham, Dynamic Motion)
- Nidec (Drive systems)
- Blower specialists (e.g., Peerless, Hartzell - though these are often larger).
- Industrial fan distributors (e.g., Grainger, Motion Industries, McMaster-Carr - search for "DC Explosion Proof Blower 785").
- Direct from Manufacturer: Search for the specific OEM. The number "HG785" suggests a specific manufacturer's catalog number (possibly a Chinese or European industrial manufacturer like SEW-Eurodrive, Wittmann, or a specialist brand).
- Required Information for Purchase: When contacting a supplier, have these details ready:
- Voltage: 12V, 24V, or 48V?
- Certification: ATEX, IECEx, or UL/CSA? Which specific zone/class?
- Inlet/Outlet Size: Usually a flange or thread size (e.g., 2" NPT).
- Flow Rate: Do you need high volume (CFM) or high pressure (static)?
Critical Cautions
- Explosion Proof is not "Sealed": The term explosion proof means if an internal explosion occurs (e.g., from a spark), the housing can contain the explosion and cool the escaping gases so they don't ignite the surrounding atmosphere.
- Certification Validity: Ensure the specific unit you purchase has a valid certificate for your location (e.g., ATEX for Europe, UL for USA). Using a non-certified blower in a hazardous zone is illegal and deadly.
- Maintenance: Explosion-proof blowers require specific maintenance (grounding checks, gap measurements). Do not modify the housing or motor.
Recommendation: If you have a specific part number (e.g., HG785-24V-EX) or the manufacturer name, please reply with that. If you are sourcing this for a specific project, I recommend contacting an industrial fan engineering firm (e.g., AirPro Fan & Blower or New York Blower) for a direct replacement or custom build.
