CWS - Model O Acetylene Lead Welding Tips - CWS UK Made
ITEM CODE: GB0401B
£4.96
(Inc £5.95)
Model "O" Acetylene Welding Tips - Lead Welding
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Acetylene Model O Gas Welding Tips - CWS 

Noz-Alls have started producing our own CWS branded tips. These are finished and tested by ourselves in Cheltenham to ensure the right flame shape and quality. 

The roofers and lead burners torch of choice is the Model O this is due to the nozzle sizes beign correctly sized to suit the code of lead being worked.
For all the traditional Model O torches our tips will fit.
Our Noz-Alls Model "O"  welding nozzles are as per the original BOC design and orifice sizes and obviously designed to function with oxy / acetylene. 

As with any of the smaller welding torches there is an overlap in nozzle sizes. As such, if you find that the size #1 welding nozzle for the FN or the Type 3 / Type 5 torches give too much heat then then the answer is to switch to the Model O torch because the size #1 Lt. Wt. or "swaged" type 5 welding nozzle fits between a size 3 and a size 4 Model O tip in terms of heat output.

At Noz-Alls we have also produced Model O tips specifically for Propane following the increasing trend for people using Propane to braze and heat.  


Lead Welding and the myth of the “ball” flame
Noz-Alls being a gas equipment specialist company and with the author being a nozzle design engineer I feel the need to let the wider lead welding community understand the “ball” flame expression and the Myth behind it with respect to lead welding.
The  need for explanation has come about due to the number of our lead welding customers who telephone us and announce that they cannot set a “ball” shaped flame?  When asked why they want to set a ball shaped flame they explain that there is a lead welding expert on U-Tube who carries out really good lead welding and in the video he expresses that you need to set the correct “ball” flame.
Firstly – a ball flame would be and is completely wrong – if the flame is a ball then there is a problem with the nozzle.  On a small orifice of a welding nozzle the flame will always be a cone shaped, albeit a very small cone to a long pointed cone this being true for all lead welding tip sizes 1 to 5.
I watched the video in questions several time to be sure of what I was understanding.  There are a few safety issues and procedures which are incorrect in the video so make sure when you operate that you follow the correct lighting up and closing down procedure.
The artisan is completely correct that setting the correct flame is essential to the success of the lead welding, when the artisan is explaining what you need to do, he hesitates, as he says, “ you must set the………ball flame correctly”.  The issue is that the artisan does not know the term used for the inner flame cone or primary cone.  As the artisan sets the flame, he terms the inner cone as a “ball” rather than a cone, I believe that this is where the confusion of setting a “ball” flame stems from.
The lead welding cone is generally very small for Model “O” sizes #1A, #2A & #3A or the #1P, #2P or #3P when viewed through a shade #5 lens you will see that the cone is triangular in shape – almost an equilateral triangle – unlike the larger sizes which appear more conventional in shape with a longer sided cone with a rounded tip.
Lead welding technique demands “dipping” of the nozzle in and out of the lead to give the instant melt and puddle, lead can stick to the tip face, this can cause the flame cone to be mis-shaped and difficult to weld with – do not prod the orifice.  Warm up and wipe away the lead.
With the correct Noz-Alls Model “O” lead welding tip it is possible to use oxy / propane because the nozzles have been designed flow the appropriate amount of gas, whilst providing a stable flame even in a wind, the flame cone does not blow off. 
Oxy / propane cannot be used for fusion welding of steel, stainless steel, aluminium or copper this is due to the oxidising nature of the flame.
Any questions concerning lead welding or our lead welding Model “O” blowpipe, which has secure  stainless steel valve spindles, which don’t adjust the flame setting when you tap them or work with the torch, please give Noz-Alls a call on 01242 681052.
 

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You can make your purchase and pay it back over 4 months with 0% interest. Obviously if you take longer than 4 months to pay back there is interest associated to PayPal Credit, it's how they make their money. If however you pay the purchase off within the interest free time frame you will not pay anthing more than the purchase cost. 

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If you are to use PayPal credit then we can only ship to the PayPal verified address. We will not be able to ship to another location. 

Any use of PayPal Credit will lead to a contract between yourself and PayPal.
Acetylene Model O Gas Welding Tips - CWS 

Noz-Alls have started producing our own CWS branded tips. These are finished and tested by ourselves in Cheltenham to ensure the right flame shape and quality. 

The roofers and lead burners torch of choice is the Model O this is due to the nozzle sizes beign correctly sized to suit the code of lead being worked.
For all the traditional Model O torches our tips will fit.
Our Noz-Alls Model "O"  welding nozzles are as per the original BOC design and orifice sizes and obviously designed to function with oxy / acetylene. 

As with any of the smaller welding torches there is an overlap in nozzle sizes. As such, if you find that the size #1 welding nozzle for the FN or the Type 3 / Type 5 torches give too much heat then then the answer is to switch to the Model O torch because the size #1 Lt. Wt. or "swaged" type 5 welding nozzle fits between a size 3 and a size 4 Model O tip in terms of heat output.

At Noz-Alls we have also produced Model O tips specifically for Propane following the increasing trend for people using Propane to braze and heat.  


Lead Welding and the myth of the “ball” flame
Noz-Alls being a gas equipment specialist company and with the author being a nozzle design engineer I feel the need to let the wider lead welding community understand the “ball” flame expression and the Myth behind it with respect to lead welding.
The  need for explanation has come about due to the number of our lead welding customers who telephone us and announce that they cannot set a “ball” shaped flame?  When asked why they want to set a ball shaped flame they explain that there is a lead welding expert on U-Tube who carries out really good lead welding and in the video he expresses that you need to set the correct “ball” flame.
Firstly – a ball flame would be and is completely wrong – if the flame is a ball then there is a problem with the nozzle.  On a small orifice of a welding nozzle the flame will always be a cone shaped, albeit a very small cone to a long pointed cone this being true for all lead welding tip sizes 1 to 5.
I watched the video in questions several time to be sure of what I was understanding.  There are a few safety issues and procedures which are incorrect in the video so make sure when you operate that you follow the correct lighting up and closing down procedure.
The artisan is completely correct that setting the correct flame is essential to the success of the lead welding, when the artisan is explaining what you need to do, he hesitates, as he says, “ you must set the………ball flame correctly”.  The issue is that the artisan does not know the term used for the inner flame cone or primary cone.  As the artisan sets the flame, he terms the inner cone as a “ball” rather than a cone, I believe that this is where the confusion of setting a “ball” flame stems from.
The lead welding cone is generally very small for Model “O” sizes #1A, #2A & #3A or the #1P, #2P or #3P when viewed through a shade #5 lens you will see that the cone is triangular in shape – almost an equilateral triangle – unlike the larger sizes which appear more conventional in shape with a longer sided cone with a rounded tip.
Lead welding technique demands “dipping” of the nozzle in and out of the lead to give the instant melt and puddle, lead can stick to the tip face, this can cause the flame cone to be mis-shaped and difficult to weld with – do not prod the orifice.  Warm up and wipe away the lead.
With the correct Noz-Alls Model “O” lead welding tip it is possible to use oxy / propane because the nozzles have been designed flow the appropriate amount of gas, whilst providing a stable flame even in a wind, the flame cone does not blow off. 
Oxy / propane cannot be used for fusion welding of steel, stainless steel, aluminium or copper this is due to the oxidising nature of the flame.
Any questions concerning lead welding or our lead welding Model “O” blowpipe, which has secure  stainless steel valve spindles, which don’t adjust the flame setting when you tap them or work with the torch, please give Noz-Alls a call on 01242 681052.
 

Finance - PayPal Credit

Login on PayPal at the checkout process; 
Click one of these two boxes. Simple! 


Spending over £99 on our website? If so, PayPal Credit is for you. It is essentially an interest free credit card without the card. 
You can make your purchase and pay it back over 4 months with 0% interest. Obviously if you take longer than 4 months to pay back there is interest associated to PayPal Credit, it's how they make their money. If however you pay the purchase off within the interest free time frame you will not pay anthing more than the purchase cost. 

To improve your chances of being eligible for PayPal Credit you must; 
1. Be aged over 18
2. Not be recently bankrupted 
3. Have an annual income over £7500 
4. Have a good credit history 

If you are to use PayPal credit then we can only ship to the PayPal verified address. We will not be able to ship to another location. 

Any use of PayPal Credit will lead to a contract between yourself and PayPal.
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