YQ-4 Marine Diaphragm Type Air Whistle

YQ-4 Marine Diaphragm Type Air Whistle

Description:

YQ-4 marine diaphragm type air whistle is a navigating device with condensed as sound motive. It is appliable to various ships and boats , and can be used as the source of the alarm signal in the case of clearing of entering a port , shunning in voyage or bad visibility.

Features:

1. Simple structure

2. Reliable quality

3. Clear sound

4. Large air capacity , small air consumption.

Requirements:

It is accordance with the IMO A. 1021(26) Resolution《2009 Alarm and Indicator Rules》and 1972《The inter-national maritime regulations for preventing collisions》Appendix 3 article 1 requirements.

Specifications：

Type:YQ-4

Nominal dimensions:4mm

Nominal pressure:0.59Mpa

1/3 frequency band:≥120dB

Frequency range: 250-700Hz

Hearing distance:0.5mile

Length of ship:12~<20m

Drawing of YQ-4 Marine Diaphragm Type Air Whistle:

L1:360mm

L2:40mm

H:156mm

M:M16x1.5mm

D:Φ124mm

d:Φ6.5mm