Buying Guide
88
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
www.nibco.com
Visit our website for the most current information.
www.nibco.com
AHEAD OF THE FLOW
®
Revised 2/12/2020
MATERIAL LIST
PART SPECIFICATION
1. Bolt Steel ASTM A193 B7/SAE J429 Grade 8
2. Identification Plate Aluminum
3. Bonnet Ductile Iron ASTM A395
4. Body Gasket Synthetic Fibres
5. Nut Steel ASTM A194 2H/SAE J995 Grade 8
6. Side Plug Stainless Steel ASTM A193 B8M
7. Hanger Pin Stainless Steel ASTM A276
8. Hanger Ductile Iron ASTM A395
9. Disc
1
Stainless Steel ASTM A351 CF8M
10. Seat Ring Stainless Steel ASTM A351 CF8M
11. Disc Nut Stainless Steel ASTM A351 CF8M
12. Body Ductile Iron ASTM A395
13. Disc Bolt
1
Stainless Steel UNS S31600
1
2"-4" stainless steel disc
5"-12" ductile iron disc with SST disc face ring and disc bolt
Class 150 Ductile Iron Body Swing Check Valves
Raised Face Flanges • Bolted Bonnet • 316 Stainless Steel Trim
285 PSI/19.7 bar non-shock cold working pressure to -20° F to 100° F/-29° C to 38° C
t
Maximum working temperature 450°F/343°C at 125 PSI/8.6 bar
150 PSI/10.3 bar saturated steam to 366°F/186°C
CERTIFIED LEAD-FREE* TO NSF/ANSI-61-8 (INCLUDES
ANNEX F AND G) AND NSF/ANSI-372 • CONFORMS TO
MSS SP-136
DIMENSIONS—WEIGHTS—QUANTITIES
Dimensions
Size A B D E Weight
In. mm. In. mm. In. mm. In. mm. In. mm. Lbs. Kg.
2 50 8.00 203 3.94 100 6.00 152 .63 16 24 11
2¹⁄₂ 65 8.50 216 4.50 114 7.00 178 .69 17 35 16
3 80 9.50 241 5.13 130 7.50 191 .75 19 47 21
4 100 11.50 292 6.13 156 9.00 229 .94 24 80 36
5 125 13.00 330 6.81 173 10.00 254 .94 24 100 46
6 150 14.00 356 8.00 203 11.00 279 1.00 25 146 66
8 200 19.50 495 9.44 240 13.50 343 1.13 29 274 125
10 250 24.50 622 12.06 306 16.00 406 1.19 30 426 194
12 300 27.50 699 16.13 410 19.00 483 1.25 32 655 298
Lever and Weight/Spring Options available only in 3", 4" and 6". (see page 102)
Note: On pump discharge, the preferred check valves are:
- inline, spring assisted, center-guided, lift checks
- spring assisted twin (double) disc
- swing design with lever and weight or lever and spring
Install 5 pipe diameters minimum downstream from pump discharge or changes in direction
to avoid flow turbulence. Flow straighteners may be required in extreme cases.
NIBCO
®
Check Valves may be installed in both horizontal and vertical lines with upward
flow or in any intermediate position.
WARNING: Do not use for Reciprocating Air Compressor Service.
t For detailed Operating Pressure, refer to Pressure Temperature Chart on page 114.
F-938-33
Flanged-Raised Face
F-938-33
Flg x Flg
*Weighted average lead content ≤ 0.25%
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.