ASME B16.10 pdf download

ASME B16.10 pdf download FACE-TO-FACE AND END-TO-END DIMENSIONS OF VALVES
1.5.1 Gate，Globe，Angle,Check，Plug, andBall Valves
(a)Class 150 _-Tables 1 and A1(b)Class 300 – Tables 2 and A2(c)Class 600 Tables 3 and A3(d)Class 900- Tables 4 and A4(e) Class 1500—Tables 5 and A5f)Class 2500 -Tables 6 and A6
1.5.2 Y-Pattern Globe and Y-Pattern SwingCheck Valves
Class 150 — Tables 1 and Al
1.5.3 Wafer Knife Gate ValvesClass 150 — Tables 7 and A7
1.5.4 Wafer Swing Check ValvesClass 150 to 2500 — Tables 7 and A71.5.5 Butterfly Valves
a) Class 150 -Tables 8 and A8(b)Class 300 – Tables 8 and A8(c)Class 600 _-Tables 8 and A8
1.6 Convention
For the purpose of determining conformance .withthis Standard, the convention for fixing significant digitswhere limits，maximum or minimum values,are speci-fied shall be “rounding off’ as defined in ASTMPractice E29.This requires that an observed or calcu-lated value shall be rounded off to the nearest unit inthe last right-hand digit used for expressing the limit.Decimal values and tolerance do not imply a particularmethod of measurement.
2 DEFINITIONS
2.1 Valve Size Designation
2.1.1 (DN{Nominal Diameter). The size of avalve is designated by the nominal size of its endconnections.This is denoted by (DN),a dimensionlessnumber indirectlyrelated to the physical size of the
connecting pipe (See Tables 1 through 10). The valvesize is not necessarily the same as the inside diameteror port diameter.
2.1.2 NPS (Nominal Pipe Size).The size of avalve is designated by the nominal size of its endconnections.This is denoted by NPS, a dimensionlessnumber indirectly related to the physical size of theconnecting pipe (See Tables Al through A10). Thevalve size is not necessarily the same as the insidediameter or port diameter.
2.1.3 Reduced port,gate, and ball valves conformingto API 6D are designated for size by two numbers,the first being the NPS (DN) on the valve ends，thesecond being the NPS (DN) of the port (seats，movingparts, etc.); e.g., NPS 6 ×4(DN 150 x 100) designatesa valve of end size NPS 6 (DN 150) with a port tomatch NPS 4 (DN100). These valves , shali haveface-to-face or end-to-end dimensions corresponding tovalves having the same size end connections; i.e.，aNPS 6 x 4(DN 150 x 100) valve shall have theface-to-face or end-to-end dimensions of a NPS 6 (DN150) valve.
2.1.4 Reduced port, pressure seal bonnet, gate, globe,and check valves are designated for size by threenumbers,the first and last being the NPS (DN) of thevalve ends,the second being the NPS (DN) of theport; e.g.，NPS 6 × 4 × 6(DN 150 x 100 x 150)designates a valve having ends matching NPS 6(DN150) with a port to match NPS 4 (DN 100). Likewise,NPS 6 × 4 × 4 (DN 150 x 100 x l00) woulddesignate a valve having one end matching NPS 6(DN 150),the other matching NPS 4 (DN 100),andthe port matching NPS 4 (DN 100). These valves shallhave face-to-face or end-to-end dimensions correspond-ing to valves having the same port size;i.e.，either aNPS 6 ×4 × 6 (DN 150 x i0o x 150) or a NPS6 ×4 × 4 (DN 150 x 100 x 100) valve shall havethe face-to-face or end-to-end dimensions of a NPS 4(DN 100) valve.
2.2 Pressure Rating Designations
Valve class designations and related PN values aregiven below:
(a)Cast iron