Oil boiler question to do with oil pump connection

[Fat Bob]

Why do most oil boiler engineers use a connecting nipple on the oil pump, and a female flexible oil line to connect on to it?

I only use a male connection flexible oil line straight on to the pump, and it saves using a nipple, and I only need to carry male flexible oil lines on the pump side instead of male and female.

Is it because the male connection straight on to the pump is more likely to leak, or is there some other reason?

Thank you for your replies.

 

[Burnerman]

I'm no heating engineer but I've always assumed it is an anti vibration / anti fracture coupling, and it also allows you to move the burner a bit without disconnecting it completely.
John

 

[Fat Bob]

I'm no heating engineer but I've always assumed it is an anti vibration / anti fracture coupling, and it also allows you to move the burner a bit without disconnecting it completely.
John

Thanks for your reply. I have edited my original post, because I think you might have misunderstood the question.

I am not asking why use a flexible oil line. I am asking why most use a flexible oil line with a female connection, and a nipple on to the pump. Instead of just using a flexible oil line with a male connection on to the pump, and forgetting the nipple. There must be a reason most do this, I just can not figure out why.

 

[Burnerman]

Sorry - I did misunderstand!
I guess its easier to disconnect the female flexy from the male nipple, quicker removal of the burner?
John

 

[Fat Bob]

Sorry - I did misunderstand!
I guess its easier to disconnect the female flexy from the male nipple, quicker removal of the burner?
John

Yes, that could be it.

 

[Terrywookfit]

Years ago they were all like that. I rarely see one now.
It makes no difference which method is used .

 

[oilboffin]

I only use the male on the bent pipe and female on the lose nut.Bob

 

[Fat Bob]

I only use the male on the bent pipe and female on the lose nut.Bob

Same. Makes keeping stock easy.

I just thought someone would have an idea why there are so many people using nipples on the oil pump side.