The 3H and 6H machined air horns will yield peak performance at proper working air pressures and are virtually indestructible.
High, medium and low tones are available which provide a wide range of frequencies and high sound output.
Federal Signal air horns feature a onepiece, cast aluminum alloy housing which has been treated to provide corrosion resistance. The horns include specialized longlasting stainless steel diaphragms. The 3 and 4inch horns (Models 3H, 4H, 4M) have threaded female pipe connections. The Model 6H features flanges for additional support.
Federal Signal air horns operate with 20 to 150 p.s.i., (pounds per square inch) but they are tuned for 80 to 90 p.s.i. operation. The horn frequency (pitch) depends on both the diameter and length of the projector. Decibel output at 10 feet is 122dBa (132dBa @ 1m).
The horns require a 120VAC Federal Signal air valve. Use Model EVS with the 3H, Model EVM with the 4M and Model EVL with the 6H.
Airhorns can be used indoors, outdoors, or anywhere compressed air can be provided.
Federal Signal Air Horns are the loudest audible signals offered for indoor applications.
They are not subject to sparking and are ideal for hazardous locations (the valves need to be located in a nonhazardous location).
- For indoor/outdoor use
- Type 4X enclosure
- Produces 122dB @ 10′ (132dB @ 1m)
| Voltage | 120VAC |
| Mount | 3/4″ Pipe |
| Decibel Output | 122 at 10 Feet |
| 132 at 1 Meter | |
| Air Consumption (Cubic Ft. Per Second) | 0.45 |
| Valve Model To Spec.** | EVL |
| Frequency Response | 295Hz |
| Enclosure Rating | Type 4X |
| Height | 9.500 in |
| Width | 6.500 in |
| Length | 12.380 in |
| Diaphram Diameter | 5.000 in |
| Pipe Size | 0.750 in |
For complete specifications please download the Specification Sheet.
Federal Signal
When it comes to safety, security and effective communications for the most hazardous environments, the most demanding applications, Federal Signal stands out as your best source for total industrial solutions. The Federal Signal product line is universally recognized as both the broadest and deepest in the industry. Audible and visual signaling. Outdoor warning. Intercoms. Public address. Telephony. Initiating systems. Fire alarms. Uninterruptible power supplies. And more. In terms of comprehensive product coverage, no one beats Federal Signal. They don’t even come close.