Type "W" Oil Burner Nozzle

Jay_insula1203

Has anyone been using all purpose Type "W" Delavan oil burner nozzles instead of "A" and "B" and if yes has there been problems ? It would be nice to cut down on the Nozzles we need to stock on our trucks.
Thanks for any input on this.
Jay

Steamhead

Doesn't work that way. The W is sort of a cross between a hollow (A) and a solid (B) which is also known as a "semi". It's handy to have but won't satisfactorily replace either.

Our company stocks a selection of all three types.

SuperTech

Unfortunately there's no way to cut down on the need for a wide variety of all three types of nozzles.  Its best to stick with the spray pattern that the boiler is designed for.
I've used W nozzles in place of A and B nozzles when I'm in a jam.  But i I always make sure I have a true zero smoke and my combustion analysis meets the manufacturer's specifications. And I always go back to the correct nozzle next chance I I get. 

Big Ed_4

I only use W nozzles ,B's if I ran out of W's . In my area with corn oil added , the W works the best ...The angle depends on the Boiler and burner . I stay what the manufacture posted on a tuned boilers like a Buderus ... Pin boiler , I prefer to dropping size and increasing pump pressure to stay in the firing range , to get that bright clean fire ...

HVACNUT

Beckett, Riello, and Carlin all have OEM spec books or downloads for numerous burner and boiler combinations. The W nozzle is not all purpose. Its specific to the application. I have been known to use one when I wasn't getting good numbers with a spec'd A or B. Sometimes you need to do a field bench test. I did work with a guy who used a W on everything. He also put a Carlin EZ-1 head on a 99 CRD once, on an original Blue Ray, so there's that. 

Robert O'Brien

Big Ed_4 said:

I only use W nozzles ,B's if I ran out of W's . In my area with corn oil added , the W works the best ...The angle depends on the Boiler and burner . I stay what the manufacture posted on a tuned boilers like a Buderus ... Pin boiler , I prefer to dropping size and increasing pump pressure to stay in the firing range , to get that bright clean fire ...

Corn oil??

Robert O'Brien

HVACNUT said:

Beckett, Riello, and Carlin all have OEM spec books or downloads for numerous burner and boiler combinations. The W nozzle is not all purpose. Its specific to the application. I have been known to use one when I wasn't getting good numbers with a spec'd A or B. Sometimes you need to do a field bench test. I did work with a guy who used a W on everything. He also put a Carlin EZ-1 head on a 99 CRD once, on an original Blue Ray, so there's that. 

This. The more an OEM spec is different from the retrofit spec, the more likely you'll be giving your analyzer a workout.

Steamhead

Here are some links to Delavan's nozzle literature.

This one actually diagrams the various spray patterns:

https://assets.delavan.com/delavan-oil-burner-nozzles-and-accessories.84l1k9.pdf

This one goes into a bit more detail:

https://assets.delavan.com/241863-delavancx3.i6jp2a.pdf

I'm not sure why Delavan calls the W an all-purpose spray. Either the nozzle spray pattern matches the air pattern of that particular burner in that particular boiler, or not. If not, you won't be able to tune the burner properly.

Jay_insula1203

Thanks everyone for your input on W Nozzles - Jay