WHISTLING TRUMPET (for Hybrid Deceptor Pro & Respons TMS over 14psi Hi Boost)

Listing for one GFB Whistling Trumpet, brnad new

The Whistling Trumpet can be used in place of the standard trumpet on GFB valves (Part numbers T9003 & T9503), and will make a whistling sound. However, it is necessary to run the valve so that all (or most) of the air vents through the trumpet ‘ Respons valves will typically not generate the velocity required to whistle when set to 50/50 venting.