Abstract: A flushing arrangement for a foam dispensing gun operation to dispense at least one resin component which solidifies on exposure to air and including a gun body with an internal passageway adapted to be closed by a valve to establish a passageway portion located downstream from the valve in the context of resin flow past the valve when opened. The flushing arrangement includes a port extending from the exterior of the gun body to the passageway portion immediately downstream from the closed valve so as to enable the circulation of solvent from a pressurized source, such as a squeeze bottle, throughout all surfaces with which the resin comes in contact in the passageway portion.

Abstract: A foam dispensing gun of the type having a disposable nozzle for mixing and dispensing separate fluid components of a resin system. The nozzle is retained on the gun by a sliding breech which also pivotally supports a valve actuating trigger to be in an operative position when the breech is moved to retain a nozzle to the gun and disabled when the breech is moved to release the nozzle for reloading. The breech and trigger may be further arranged so that the trigger is inoperative in the absence of a nozzle on the gun.

Abstract: A foam dispensing gun of the type having a disposable nozzle for mixing and dispensing separate fluid components of a resin system. The nozzle is retained on the gun by a sliding breech which also pivotally supports a valve actuating trigger to be in an operative position when the breech is moved to retain a nozzle to the gun and disabled when the breech is moved to release the nozzle for reloading.