ISODRAFT
Reference Manual
Symbol Keys
: TEE or OLET Symbol Keys
TEE or OLET Symbol Keys
Component Description
SKEY
Plotted Symbol
P-points
Note
Olet - Half Coupling e.g. Screwed (Picture shows screwed but can be any connection type)
HC**
7
Olet - Half Coupling e.g. Socket Weld
HC**
7
Olet - Latrolet e.g. Butt Weld
LA**
Olet - Latrolet
e.g. Screwed
LA**
Olet - Latrolet
e.g. Socket Weld
LA**
Olet - Nipolet
e.g. Screwed
NI**
Olet - Nipolet e.g. Plain Ended
NI**
Olet - Sockolet
SK**
Olet - Sweepolet
SW**
Olet - Thredolet
TH**
Olet - Weldolet
WT**
Olet - Instrument
Flanged
ITFL
Tee - Butt Weld
TEBW
2,3,7
Tee - Compression
TECP
2,3
Tee - Flanged
TEFL
2,3
Tee - Screwed
TESC
2,3
Reserved for pipe tappings
TESI
1,2,7
Tee - Set-on
TESO
1,2,7
Tee - Set-on
Reinforced
TERF
1,2,7
Tee - Pulled
TPUL
1,2,7
Tee - Socket Weld
TESW
2,3,7
Tee - Swept Branch Butt Weld
TSBW
2,7
Tee - Swept Branch Flanged
TSFL
2,7
Tee - Swept Branch Compression
TSCP
2,7
Tee - Swept Branch Socket Weld
TSSW
2,7
Tee - Generic Y-type with variable angle out- and off- legs
Y@**
4,5,6,7
Notes:
1.
The position of P3 along the perpendicular axis is important for deriving the cut pipe length. The perpendicular displacement of P3 is determined by the point at which the offline leg intersects the main line. For TESO and TERF, the distance P0 to P3 must not exceed half the main bore; P0, P1, P2 and P3 will be coincident when the offline leg has the same bore as the main line. For TPUL, the distance P0 to P3 must exceed half the main bore. If the position of P3 does not follow these rules, any weld shown at the intersection may appear in the wrong place.
2.
The dimensions of piping components depend upon plotted leg length. The default plotted leg length is 9mm, but this can be set to a different value using the LEGLENGTH command. The minimum value the user can set is 6mm.
3.
The TEBW, TECP, TEFL, TESC and TESW SKEYs can be used for laterals.
4.
Replace the ** characters in the symbol key with one of the following end condition identifiers:
BW for butt weld
CP for compression
SW for socket weld
FL for flanged
SC for screwed
PL for plain
5.
The @ character in the symbol key is replaced automatically by an integer in the range 1 to 3, depending on the relative bore size of the connections, with 1 assigned to the largest bore. It is important to note the bore size if redefining the SKEYS for Y1**, Y2** or Y3**.
6.
Flanged connections on generic Y-type fittings are represented on the isometric on the tube only. This is due to the fact that the y-type fitting is user-definable and flanged representation on the component cannot be enforced.
7.
The presence of an offset P3 may be indicated. The P3 connection of the tee/olet must be connected directly to a tube. The default behaviour is that, if an offset P3 configuration is present, a new ATEXT characterising the offset is output upon the drawing. This new ATEXT is number 233 in the list of ATEXTs and its default value is ‘BRANCH OFFSET BY’ followed by the nonzero relative coordinates of the offset.
1974 to current year.
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