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Product Description
YQ-8 Diaphragm Air Horn
Product Introduction
The YQ-8 Diaphragm Air Horn is a reliable compressed air-driven fog signal horn engineered for vessels ranging from 20 to 75 meters in length . Designed to meet international maritime collision regulations (COLREGs) and IMO Resolution A.1021(26) , this pneumatic horn delivers a clear and penetrating sound to ensure your vessel is heard in low-visibility conditions such as fog, rain, or during port maneuvers.
The YQ-8 operates using compressed air as its power source (nominal pressure 0.59 MPa ), driving a diaphragm to vibrate and produce its characteristic resonant tone. This diaphragm-based system is renowned for its simple structure, rugged reliability, clear sound, and low air consumption .
Constructed from high-quality copper alloy with corrosion-resistant materials , the YQ-8 is built to withstand harsh marine environments with minimal maintenance requirements. It complies fully with international maritime safety standards and is available with optional electric solenoid valve control (YQ-8G model) for remote and automated operation .
Drawing
Technical Data
Type | Nominal Dimensions | Nominal Pressure | 1/3 Frequency Band | Frequency Range | Hearing Distance | length of ship | Dimensions(mm) | |||||
| L1 | L2 | H | M | D | d | |||||||
| (mm) | (Mpa) | (dB) | (Hz) | (Nautical mile) | (M) | |||||||
| YQ-4 | 4 | 0.39 | ≥120 | 250-700 | 0.5 | 12~<20 | 360 | 40 | 156 | M16x1.5 | φ124 | 6.5 |
| YQ-6 | 6 | 0.59 | 514 | 53 | 172 | M20x1.5 | φ160 | Φ11 | ||||
| YQ-8 | 8 | 0.59 | ≥130 | 1.0 | 20~<75 | 628 | 53 | 195 | M20x1.5 | φ188 | Φ11 | |
| YQ-10 | 10 | 0.8 | ≥134 | 568 | 60 | 252 | M20x1.5 | φ245 | φ11 | |||
| YQ-15 | 15 | 0.98 | ≥138 | 130-350 | 1.5 | 75~<200 | 720 | 32 | 300 | M30×2 | φ250 | φ13 |
Key Features
*Clear Acoustic Output: Achieves a 1/3 octave band sound pressure level of ≥130 dB at 1 meter, with an audibility range of 1.0 nautical miles .
*Penetrating Tone: Frequency range of 250-700 Hz, ensuring clear recognition over distance .
*Pneumatic Operation: Uses compressed air (0.59 MPa nominal pressure) to drive the diaphragm, producing a reliable and consistent sound .
*Durable Construction: Marine-grade copper alloy body with corrosion-resistant finish for long service life in saltwater environments .
*Compliance & Certification: Meets IMO A.1021(26), 2009 Alarm and Indicator Rules, and COLREG 1972 Appendix III requirements . ZY certification available .
*Versatile Application: Suitable for cargo ships, fishing vessels, tugs, and other vessels in the 20-75m range navigating inland and coastal waters .
