Buying Guide

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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 7/20/2018
Class 150 Bronze Check Valves
Horizontal Swing • Regrinding Type • Y-Pattern • Renewable Seat and Disc
150 PSI/10.3 bar saturated steam to 366º F/185º C
300 PSI/20.7 bar non-shock cold working pressure
CONFORMS TO MSS SP-80
MATERIAL LIST
PART SPECIFICATION
1. Bonnet Bronze ASTM B 62
2. Body Bronze ASTM B 62
3. Hinge Pin
Bronze ASTM B 140 Alloy C31400 or
B 134 Alloy C23000
4. Disc Hanger
Bronze ASTM B 62 or
MPIF SS-316NI-25
5. Hanger Nut Bronze ASTM B16
6. Disc Holder Bronze ASTM B 62
7. Seat Disc
Steam (PTFE) (Y)
Bronze ASTM B 62 C83600 (B)
8. Seat Disc Nut Bronze ASTM B16 or B 62
9. Hinge Pin Plug Bronze ASTM B 140 Alloy C31400 (not shown)
*10. Seat Disc Washer ASTM B 98 Alloy C65500 or ASTM B 103
* Sizes ³⁄₄", 1", 1¹⁄₄", 1¹⁄₂" and 2" only.
DIMENSIONS—WEIGHTS—QUANTITIES
Dimensions
Size A B C D T-433 S-433
Master
In. mm. In. mm. In. mm. In. mm. In. mm. Lbs. Kg. Lbs. Kg. Ctn. Qty.
¹⁄₄ 8 2.13 54 1.63 41 1.63 41 1.38 35 0.54 0.24 0.54 0.24 50
³⁄₈ 10 2.13 54 1.63 41 1.63 41 1.31 33 0.54 0.24 0.53 0.24 50
¹⁄₂ 15 2.44 62 1.69 43 1.69 43 1.50 38 0.60 0.27 0.60 0.27 50
³⁄₄ 20 2.94 75 1.88 48 1.88 48 1.88 48 0.98 0.44 0.99 0.45 50
1 25 3.56 90 2.31 59 2.31 59 2.25 57 1.58 0.72 1.57 0.71 30
1 ¹⁄₄ 32 4.19 106 2.69 68 2.69 68 2.75 70 2.39 1.08 2.34 1.06 20
1 ¹⁄₂ 40 4.50 114 2.94 75 2.94 75 3.13 79 3.16 1.43 3.11 1.41 10
2 50 5.25 133 3.94 100 3.94 100 3.75 95 5.41 2.45 5.34 2.42 10
2 ¹⁄₂ 65 8.00 203 5.06 129 5.06 129 5.31 135 11.48 5.21 11.20 5.08 5
3 80 9.25 235 6.25 159 6.25 159 6.25 159 17.53 7.95 16.91 7.67 4
Ordering: T-433 and S-433 normally furnished with Bronze Disc (T-433-B) or (S-433-B).
Both available with PTFE Steam Disc (T-433-Y), (S-433-Y).
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.
Note: On pump discharge, the preferred check valves are:
- inline, spring assisted, center-guided, lift checks.
NIBCO
®
Check Valves may be installed in both horizontal and vertical lines with upward flow or in any
intermediate position. They will operate satisfactorily in a declining plane (no more than 15º).
Warning – Do Not Use For Reciprocating Air Compressor Service.
t For detailed Operating Pressure, refer to Pressure Temperature Chart on page 114.
T-433
Threaded
S-433
Solder
S-433-Y
C x C
T-433-Y
NPT x NPT
T-433-B
NPT x NPT
Dezincification
Resistant
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.