Description

AGNM 25 – OXY ACETYLENE GOUGING NOZZLE

An AGNM 25 nozzle for oxy acetylene gouging. The AGNM (Acetylene gouging nozzle mix) nozzles are designed to fit an NM cutting torch or a cutting attachment on a type 5 shank.

Key Features

One piece AGNM cutting nozzle
25 Nozzle for 10 – 13mm plate thickness

ABOUT AGNM NOZZLES

To fit a nozzle, the head nut is removed from the cutting torch or attachment, inserted into the seat and the nut is re-applied and tightened.

An AGNM nozzle has a number of holes, surrounding a central larger orifice. These outer passages carry oxy acetylene mixed gas to pre heat the metal to its ignition temperature. The middle orifice expels a jet of oxygen to blow away the molten material. This central jet is larger than that of a cutting nozzle to dissipate the weld or material being gouged. The larger the holes in the nozzle, the larger the gouging capacity. For example, a 13 nozzle is the smallest, and the 25 is the largest.

When selecting a nozzle for your gouging application it is worth getting the size applicable to the material thickness/ An oversize nozzle wastes gas.

Gouging nozzles provide a controlled gouge for back-gouging welds and defects, removing lugs, cleats and cracks, and preparing plate edges for welding. They use acetylene for greater speed and incorporate a hard-wearing protrusion that can be run along the gouge.

Other Information:

Hoses being used with the torch should be the correct type for the gas and fitted with check valves (non-return). They are colour coded according to the gas they are designed for – red for acetylene and blue for oxygen.
Flashback arrestors should be installed on the regulator side of the hose.
A nozzle should be inspected regularly to check for damage or obstructions.
A poorly maintained nozzle can cause turbulent gas flow and increases the risk of flashback.
Obstructions to the nozzle can be caused by dirt or spatter.
Do not hold the nozzle too close to the workpiece. The nozzle can overheat and cause a flashback.