Buying Guide
56
NIBCO INC. WORLD HEADQUARTERS • 1516 MIDDLEBURY ST. • ELKHART, IN 46516-4740 • USA • PH: 1.800.234.0227
TECH SERVICES PH: 1.888.446.4226 • FAX: 1.888.336.4226 • INTERNATIONAL OFFICE PH: +1.574.295.3327 • FAX: +1.574.295.3455
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AHEAD OF THE FLOW
®
Revised 4/20/2020
MATERIAL LIST
PART SPECIFICATION
1. Handwheel Nut Steel ASTM A563
2. Identification Plate Aluminum
3. Handwheel Cast Iron ASTM A126 Class B
4. Stem Brass ASTM B16 Alloy C36000
5. Yoke Bushing Copper Alloy ASTM B584 Alloy C84400
6. Bonnet Cast Iron ASTM A126 Class B
7. Gland Follower Nut Copper Alloy ASTM F467 Alloy C27000
8. Gland Follower Stud Steel ASTM A307/SAE J429
9. Gland Follower
Cast Iron ASTM A126 Class B
or Ductile Iron ASTM A536
10. Packing Gland Zinc Plated Powdered Iron ASTM B783
or Copper Alloy ASTM B16
11. Hex Head Cap Screw Steel ASTM A307/SAE J429
12. Packing Aramid Fibers / Graphite
13. Body Gasket Reinforced Flexible Graphite
14. Swivel Nut
Copper Alloy ASTM B584 Alloy C84400
or ASTM B16 Alloy C36000
15.
1
Disc Cast Iron ASTM A126 Class B
16. Disc Ring Copper Alloy ASTM B584 Alloy C84400
17. Disc Pilot Copper Alloy ASTM B584 Alloy C84400
18. Seat Ring Copper Alloy ASTM B584 Alloy C84400
19. Body Cast Iron ASTM A126 Class B
1
Sizes thru 4" have all Bronze Discs
Sizes 6" and 8" have Cast Iron Disc with Copper Alloy Disc Face Rings and Copper Alloy Pilots.
2
2" thru 6" have Aramid Fibers/Graphite packings. 8' has wire reinforced carbon yarn, resilient
core with Graphite & Zinc finish.
NOTE: NIBCO may substitute Ductile Iron ASTM A395 (60-40-18) for ASTM A126 Class B Cast Iron for
the Body, Bonnet, Wedge, or Disc. NIBCO may substitute Ductile Iron ASTM A395 (60-40-18) or
ASTM A536 (65-45-12) for all other ASTM A126 Class B Cast Iron components.
Class 250 Iron Body Globe Valves
Bolted Bonnet • Renewable Seat and Disc* • Bronze Mounted
500 PSI/34.5 bar non-shock cold working pressure from -20°F to 150°F/-29°C to 66°C
t
Maximum working temperature 450°F/232°C at 250 PSI/17.2 bar
250 PSI/17.2 bar saturated steam to 406°F/208°C
CONFORMS TO MSS SP-85
F-768-B
Flanged
F-768-B
Flg x Flg
DIMENSIONS—WEIGHTS—QUANTITIES
Dimensions
Size A B C D E Weight
In. mm. In. mm. In. mm. In. mm. In. mm. In. mm. Lbs. Kg.
2 50 10.50 267 10.31 262 7 178 6.50 165 .88 22 42 19
2¹⁄₂ 65 11.50 292 13.56 344 8 203 7.50 191 1.00 25 78 35
3 80 12.50 318 14.00 356 10 254 8.25 210 1.13 29 96 44
4 100 14.00 356 16.50 419 11 279 10.00 254 1.25 32 154 70
6 150 17.50 445 23.50 597 14 356 12.50 318 1.44 37 360 163
8 200 21.00 533 26.50 673 16 406 15.00 381 1.63 41 546 248
*With proper machining facilities available.
FREEZING WEATHER PRECAUTION: Subsequent to testing a piping system, valves should be left in
an open position to allow complete drainage.
t For detailed Operating Pressure, refer to Pressure Temperature Chart on page 114.
WARNING: This product can expose you to chemicals including
lead, which is known to the State of California to cause cancer
and birth defects or other reproductive harm. For more information
go to www.P65Warnings.ca.gov.