General Info

The Diaphone warning horn is powered by pressured air. They are well over 80 years old and are capable of producing 1 second blasts at one half second intervals. Most reports say the Diaphone can be heard about 6 miles with optimal conditions (terrain, tall buildings, atmospheric conditions).

Technical Documents, Old Brochures:

Literature JPGLiterature PDFTranscribed Info DOCTranscribed Info PDF
Filename / LinkSize
bulletin5010_1_print.jpg579.25 Kb
bulletin5010_1_web.jpg147.86 Kb
bulletin5010_2_print.jpg781.87 Kb
bulletin5010_2_web.jpg221 Kb
bulletin5010_3_print.jpg529.68 Kb
bulletin5010_3_web.jpg127.71 Kb
bulletin515_1_print.jpg699.45 Kb
bulletin515_1_web.jpg171.14 Kb
bulletin515_2_print.jpg637.13 Kb
bulletin515_2_web.jpg187.4 Kb
bulletin515_3_print.jpg589.59 Kb
bulletin515_3_web.jpg167.78 Kb
bulletin515_4.jpg120.6 Kb
bulletin515_4_print.jpg543.6 Kb
bulletin516_1_print.jpg432.69 Kb
bulletin516_1_web.jpg132.53 Kb
bulletin516_2_web.jpg134.11 Kb
bulletin517_print.jpg516.63 Kb
bulletin517_web.jpg115.27 Kb
bulletin518_1_print.jpg
bulletin518_1_web.jpg64.64 Kb
bulletin518_2_print.jpg304.49 Kb
bulletin518_2_web.jpg73.94 Kb
capacities_print.jpg503.13 Kb
capacities_web.jpg140.48 Kb
diaphone_1_print.jpg457.55 Kb
diaphone_1_web.jpg161.02 Kb
diaphone_2_print.jpg463.42 Kb
diaphone_2_web.jpg161.49 Kb
gamewelldiaphone_print.jpg645.4 Kb
gamewelldiaphone_web.jpg205.67 Kb
gamewellpage19_print.jpg391.84 Kb
gamewellpage19_web.jpg1.05 Kb
gamewellpage20_print.jpg414.33 Kb
gamewellpage20_web.jpg106.42 Kb
public_alarm_print.jpg318.13 Kb
public_alarm_web.jpg102.14 Kb
valve_1_print.jpg452.96 Kb
valve_1_web.jpg188.37 Kb
valve_2_print.jpg617.13 Kb
valve_2_web.jpg
valve_3_print.jpg207.43 Kb
valve_3_web.jpg
valve_4_print.jpg348.21 Kb
Filename / LinkSize
DiaphoneHorn.pdf894.44 Kb
Smithvalvespecs.pdf2.17 Mb
bulletin515.pdf2.55 Mb
bulletin516.pdf289.76 Kb
bulletin517.pdf560.09 Kb
bulletin518.pdf628.29 Kb
capacities.pdf532.88 Kb
controlvalve_timing.pdf1013.19 Kb
diaphone_ex.pdf689.41 Kb
publicalarm.pdf355.37 Kb
Filename / LinkSize
Diaphone Horn with Reducing Valve and Dirt Strainer.doc26.5 Kb
Diaphone Parts A-22908.doc27 Kb
Maintenance Instructions for the Type B Diaphone Horn.doc27.5 Kb
Filename / LinkSize
Diaphone Horn with Reducing Valve and Dirt Strainer.pdf45.1 Kb
Diaphone Parts A-22908.pdf44.08 Kb
Maintenance Instructions for the Type B Diaphone Horn.pdf47.04 Kb