AIA/NAS 520-2010 pdf download COUPLING, FLEXIBLE, LOW PRESSURE, 450 ˚F AIR LINE
MATERIAL: SEE PROCUREMENT SPECIFICATION
CODE: DIAMETER CODED AS FIRST DASH NUMBER FROM TABLE I.
LENGTH CODED AS SECOND DASH NUMBER IN .250 INCH INCREMENTS.
EXAMPLE OF PART NUMBER:
NAS520-1 8-22 = COUPLING, 2.250 Ø ID, 5.500 INCHES IN LENGTH
NOTES:
(1 ) DIMENSIONS IN INCHES. TOLERANCES UNLESS OTHERWISE SPECIFIED: DECIMALS ± .01 0
(2) THIS STANDARD TAKES PRECEDENCE OVER DOCUMENTS REFERENCED HEREIN.
(3) DIMENSIONING AND TOLERANCING PER ANSI Y1 4.5M-1 982.
(4) REFERENCED DOCUMENTS SHALL BE THE ISSUE IN EFFECT ON DATE OF INVITATIONS FOR BID.
(5) UNLESS OTHERWISE SPECIFIED, PART INVENTORY MANUFACTURED TO PREVIOUS REVISIONS OF THE APPLICABLE DRAWING OR SPECIFICATION MAY BE PROCURED AND USED UNTIL STOCK IS DEPLETED.
(6) TEMPERATURE RANGES: -65 °F TO +450 °F (-54 °C TO +232 °C)
(7) MAXIMUM OPERATING PRESSURE = 20 PSI

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