LWN vs WN?
LWN vs WN?
(OP)
Hey so here's a stupid question for the day. If you were to explain the difference between LWN and WN flange to a highschool kid how would you do it? If you guys could even give me a link to read that would be great as I've tried googling and didnt come up with anything.
thanks
thanks





RE: LWN vs WN?
RE: LWN vs WN?
The LWN is a commercial product. The catalog dimensions for the neck may (and do) vary with manufacturer, but the "flange" portion should meet the B16.5 dimensions and can use the B16.5 pressure ratings.
Per ASME Section VIII the hub of the WN cannot be used for reinforcing area, thus by definition it cannot be "self-reinforcing".
RE: LWN vs WN?
Regards,
Mike
RE: LWN vs WN?
A LWNRF on the other hand attaches directly to the vessel. That is, the nozzle neck is integral part of the flange. The OD, ID, and thickness are typically (always?) larger than a WNRF. Thus, LWN does far more reinforcing than WN, and thus has a much better chance of being self-reinforcing.
austsa
RE: LWN vs WN?
Nozzle with LWNF (straight hub welding flange as per ASME B16.5): ONE PIECE PART, no weld, self-reinforced
Nozzle with WNRF: TWO PIECE PART, one weld between flange and pipe, may be self-reinforced.
Regards
rhg
RE: LWN vs WN?
RE: LWN vs WN?
RE: LWN vs WN?
HH and X are usually equal and X is defined in ASME B16.5.