#3A - Multi-Flame Hooked Nozzle to Get Round Pipes - Oxy / Acetylene - For Pipe Diamters of 40-76mm

Braziing & Silver soldering nozzle specifically designed for those awkward to access areas where you may need to join pipes such as close to a bulkhead / panel or wall.  The largest hook nozzle has 17 flames designed to suit pipes from 40 to 65mm diameter.  
For brazing smaller diameter pipes please see the other sizes in the range, the smaller nozzle sizes have a fewer number of heating flame cones designed for the correct heat spread required for smaller pipe diameters.

This largest hook brazing nozzle will screw directly into the Lt. Wt. mixer allowing it to be used with Lt. Wt. shank, the  brazing nozzle has 17 heating flames which are focused on the same point towards the centre ensuring the tube / pipes to be joined may be heated from all sides, including the back whcih you cannot always get to.  This hooked multiple outlet brazing nozzle is ideal for heating and ventilation engineers.

There are also oxy / propane versions available.

Due to the acetylene flow rate these nozzles may only be used with full size industrial acetylene cylinders - the equivalent size for flow would be a welding nozzle size #35 (CFH of DA).  

DO NOT USE on smaller size acetylene cylinders

Note that these hook nozzles need to be operated on a minimum of a Full size BOC size “H or L” or HobbyWeld or other smaller size acetylene cylinders are not suitable.

These hook nozzles must not be operated on any small DA cylinders  - equipment damage will result due to under running and backfire.
 
Multi-flame nozzles need to operate at higher acetylene pressures compared to the single flame welding nozzles so as to maintain a stable flame.  As with all acetylene nozzles when lighting the acetylene only the flow must be increased until no soot is visible from the flame tips - this will be the correct flow of acetylene.  The oxygen may then be introduced and the pre-heat flame set.
The flame should be set so that one or two heating flames “dance” off the nozzle base – generally these will seat back again when the nozzle is brought to the tube to be joined.

This burner has been designed to work with pipe diameters of 40 to 65mm