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Downhand (Industrial) (OP)
14 Mar 10 23:39
Is there any difference between a schedule 160 nipple and simply threading schedule 160 pipe of the same size?
Helpful Member!  pennpiper (Mechanical)
15 Mar 10 7:00
Helpful Member!  rneill (Mechanical)
15 Mar 10 15:43
Some end users define nipples as short pieces of pipe of between 2 and 6" and require nipples to have greater wall thickness than threaded pipe.  I've never quite understood this other than perhaps where nipples are used to attach a root valve to primary process piping.  In this later case, you would be increasing the mechanical strength of the branch connection up to it's isolation point.

Anyway, myself I have not treated nipples differently from threaded pipe.
11echo (Petroleum)
29 Mar 10 18:57
Dealing with threading small diameter pipe that is 12" long or less in the field is a major "pain"! ...The shorter the length the more painful. It's best to pre-determine required nipple lengths so they arrive to the project with threaded ends ready to go.
msquared48 (Structural)
1 Apr 10 18:36
Well, you learn something everyday here - even pipes have nipples!

Mike McCann
MMC Engineering
Motto:  KISS
Motivation:  Don't ask

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