ASME B16.10:2000 pdf free download

ASME B16.10:2000 pdf free download.FACETO-FACE AND END-TO.END DIMENSIONS OF VALVES.
For bunwelding end valves, the end-go-end dimension is the distance between the extreme ends (root faces) of the welding bevels (see Fig. 2).
2.5 Grooved End Valve Dimensions
The end-to-end dimension for grooved end valves is the distance between extrcnle ends.
2.6 Angle Valves
For hanged angle type valves (those iii which the ends are at an angle of 90 deg to each other), the center- to-face dimension is the distance from the centerline of the port to the extreme end which is the gasket contact surface. For flanged angle type valves in which the gasket seating surface is not located at the extreme end and for angle type waives having buttwelding ends, the phrase center-to-end denotes the distance from the centerline of the port to the extreme end.
3 FACINGS OF FLANGED VALVES
Figure I shows facings for flanged ends.
3.1 Facings Normally Furnished
3.11 Flat Face. Flanges for Classes 25 and 125 cast iron valves are flat faced.
3.1.2 2 mm (0.06 In.) Raised Face. Flanges for Class 250 cast iron and for Classes 150 and 300 steel, alloy, and ductile iron valves have 2 mm (006 in.) raised faces, which are included in the face-to-face (or center-to-face) dimension. When Classes 150 and 300 valves are required with flat faces, either the full thickness of flange or the thickness with the 2 mm (0.06 in.) raised face removed may be furnished, unless othcrwise specified by the customer. Users are reminded that removing the 2 mm (0.06 in.) raked face will make the face-to-face dimension nonstandard.
3.1.3 7 mm (0.25 in.) Raised Face. Flanges for Class 600 and higher steel and alloy valves have 7 mm (0.25 in.) raised faces, which are included in the face-to-face (or center-to-face) dimensions.
3.2 Other Standard Facings
Table 9 (A9) summarizes data on all flange facings and can be used with Tables I to 6 (Al to A6) in calculating face-to-face and end-to-end dimensions offlanged valves having standard facings other than (hose described in para. 3.1.
3.3 Ring Joint Facings
The X dimension given in Table 10 (A 10), whcn added to the face-to-face dimension of a valve having raised face flanges in Tables 1 to 6 (Al to A6). establishes the end-to-end dimension for the valve having flanges with ring joint facings.
4 VARIATiONS OF LENGTh WITHIN A CLASS OF VALVES
4.1 Buttwelding End Valves (Also se Para.
2.4)
Tables I to 6 (Al to A6) include end-co-end dimensions for valves having bunwelding ends. In many cases, the dimensions are different from those of face- to-face dimensions of flanged valves, as evidenced by the differences between dimensions A and H of the tables.
4.1.1 Short Pattern. For pressure seal or tiangeless bonnet valves having buttwelding ends in Class 600 and higher, the regular end-to-end dimensions shall be equal to the short pattern dimensions shown in Tables 3 to 6 (A3 to A6). At the manufacturer’s Option, the end.to-end dimensions of these valves may be the same as the face-to-face dimensions of raised face flanged valves.
4.1.2 long Pattern. For flanged bonnet valves having butrwelding ends in Class 600 and higher, the regular end-to-end dimensions shall be equal to the face-to-face dimensions of raised face flanged valves shown in Tables 3 to 6 (A3 to A6). At the manufacwrer’s 01*1011, the end-to-end dimensions may be the same as the short pattern end-to-end dimensions.
4.2 Narrow. Wide, and Extra Wide Designations
Certain butterfly valves are designated narrow, wick, or extra wide for the purpose of consolidating a diversity of manufacturer’s lengths into two or three sets of dimensions for a given size. At the manufacturer’s option, any of the two or three dimensions listed for a size may be used.
5 TOLERANCES
5.1 Straightway Valves
A tolerance oF ±2 mm (±0.06 in.) shall be allowed on face-to-face and end-to-end dimensions of valves of NPS 10 (DN 250) and smaller, and a tolerance of ±3 mm (±0.12 in.) shall be allowed for NI’S 12 (DN 300) and larger. For exceptions as related to wafer type and butterfly valves, see General Note (b) in Table 7 (Al) and Notes (4) and (5) in Table 8 (AS).
5.2 Angle Valves
The tolerances on center-to-face and center-to–end dimensions of angle type valves shall be one-half those listed in para. 5.1.