Ibuki Kogyo A100 Air Horn with Solenoid Valve AC 100V

Ibuki Kogyo A100 Air Horn with Solenoid Valve (AC 100V Coil)

The Ibuki Kogyo A100 (Electrically Operated Configuration: Model A100E) is a diaphragm-type marine air horn engineered for primary acoustic signaling on vessels ranging from 20 meters to under 75 meters in overall length (COLREGs Class III). Equipped with an integrated AC 100V 1-Phase solenoid valve and a secondary mechanical pull-wire manual lever, this pneumatic whistle guarantees redundant acoustic signaling during bridge watchkeeping, restricted visibility, and maneuvering operations.

Constructed from corrosion-resistant marine-grade alloys finished in standard Ibuki Munsell 7.5BG 7/2 coating, the A100 delivers an authoritative 310 Hz fundamental frequency at a 1/3rd-octave sound pressure level exceeding 130 dB at 1 meter. Its low free-air consumption (15 L/s) minimizes pneumatic load on shipboard service air receivers while maintaining instant acoustic response.

Model Details

• Base Mechanical Model: Ibuki Kogyo A100 (Manual Lever Actuation Only)
• Solenoid-Equipped Model (MPN): A100E (Electric Solenoid + Manual Lever Actuation)
• Cold-Climate Heated Variant (MPN): A100EH (Includes thermostatically controlled anti-icing heater)
• AC 100V Solenoid Coil Specification: AC 100V / 110V, 50/60 Hz, Single Phase (1Ø), 0.2A Rated Current
• IMPA Reference Codes: 370105 / 370185 / 370191 (Series classification depending on voltage/heater configuration)

Compatibility

• Compatible Control Panels & Timers: Ibuki Kogyo Auto Fog Signal Controllers (Models STM-8Z, 2B100, A100E-TC AC 100V Time Controllers).
• Bridge Actuation Switches: Ibuki PBF-1 Waterproof Push-Button Switches, Morse Key switches, and bridge wing whistle control panels.
• Pneumatic Accessories: Ibuki ML8ZPBF / LVARL-F Air Strainers and moisture separators (essential for protecting the solenoid valve seat).
• Cross-Compatibility: Can replace equivalent Class III pneumatic horns when paired with a 0.4–1.0 MPa ship service air line and an AC 100V 1Ø control circuit.

Part Number Cross-References

• Ibuki Kogyo: A100, A100E (AC100V), A100-5H, 85EAL (Alternative aluminum body variant)
• IMPA Marine Stores Guide: 370105, 370106, 370185, 370191
• ISSA Code: 47.003.05 / 47.003.15
• Functional Equivalents (Class III): Kockum Sonics Tyfon MKT 75/310, Zöllner Zetfon 85/310, Saracom / Hanjin Class III Air Horns

Features

1. Dual Redundant Actuation: Combines an instant-response AC 100V electromagnetic solenoid valve for automated fog signaling with a mechanical manual pull-lever (22 mm stroke) for blackout operation.
2. High Acoustic Efficiency: Generates over 130 dB at 1 meter at a piercing 310 Hz fundamental tone while consuming just 15 L/s of free air.
3. Wide Pneumatic Tolerance: Operates reliably across fluctuating shipboard service air pressures from 0.4 MPa to 1.0 MPa without requiring complex inline pressure-reducing stations.
4. IP56 Marine-Grade Durability: Fully enclosed weatherproof housing resists green water boarding, salt spray corrosion, and continuous funnel vibration.
5. Precision Field-Tunable Back Ring: Threaded diaphragm housing with set-screw locking allows onboard engineers to fine-tune acoustic pitch and amplitude after diaphragm replacement.

Applications

• Coastal cargo vessels, feeder container ships, and product tankers (20m to <75m LOA)
• Harbor tugs, anchor-handling tug supply (AHTS) vessels, and offshore crew boats
• Commercial fishing trawlers, stern factory vessels, and research ships
• Passenger ferries, patrol craft, and Coast Guard cutters
• Offshore oil & gas platforms and FPSO auxiliary perimeter fog-signaling stations
• Heavy industrial plants, hydroelectric dams, and port terminal emergency warning systems

Frequently Asked Questions

What vessel size is the Ibuki Kogyo A100 Air Horn certified for?

The Ibuki Kogyo A100 (and solenoid-operated A100E) is certified as an IMO COLREGs Annex III Class III whistle, designed specifically for vessels measuring 20 meters to less than 75 meters in overall length.

Can the AC 100V solenoid coil operate on both 50 Hz and 60 Hz shipboard power?

Yes. The standard Ibuki AC 100V solenoid coil is rated for dual-frequency 50/60 Hz single-phase shipboard control circuits, drawing approximately 0.2A during actuation.

Does the Ibuki A100E still work during a total shipboard electrical blackout?

Yes. In addition to the AC 100V solenoid valve, the A100E features a built-in mechanical lever with a 22 mm stroke. By rigging a stainless-steel pull wire from the mast to the bridge, the crew can sound the horn manually as long as compressed air remains in the service air receiver.

What air pressure is required to operate the Ibuki A100 air horn?

The horn operates across a wide pressure band of 0.4 MPa to 1.0 MPa (4 to 10 bar), with optimal acoustic output achieved between 0.6 MPa and 0.8 MPa. It consumes approximately 15 liters of free air per second.

What is the difference between the Ibuki A100, A100E, and A100EH models?

The A100 is the base pneumatic horn actuated strictly by a manual pull lever. The A100E adds an integrated electric solenoid valve (such as AC 100V, AC 220V, or DC 24V) for push-button and auto-fog controller operation alongside the manual lever. The A100EH includes both the electric solenoid valve and a thermostatically controlled electric heater for sub-zero arctic navigation.