Page 1
Figure 559
Y-STRAINER
Features:
• 400 WOG Non-Shock
(@ 100°F)
• 250 PSI WSP
• Threaded NPT Ends
• 20 Mesh Stainless Steel
Screen
• Blow-off Plug Included
2-1/2" Strainer has Bolted
*
End Bonnet
400 WOG
CAST IRON Y-STRAINER
Standards:
• NPT Ends:
ANSI/ASME B1.20.1
• Shell (Hydro)
600 PSI Per API 598
• Markings Per MSS SP-25
Test Pressure:
SIZE Cv Wt. (lbs.)
1/2 9.2 1.39
3/4 17.5 2.03
1 28 2.99
1-1/4 45 5.00
1-1/2 62 7.03
2 96 10.64
2-1/2 127 26.22
Cv & Weight
Figure Number Matrix
FNW 559 Size
1/2 = D
3/4 = F
1 = G
1-1/4 = H
REPLACEMENT SCREENS
1/2 = FNW559SD
3/4 = FNW559SF
1 = FNW559SG
1-1/4 = FNW559SH
1-1/2 = FNW559SJ
2 = FNW559SK
2-1/2 = FNW559SL
SIZE CODE
1-1/2 = J
2 = K
2-1/2 = L
REPLACEMENT GASKETS
1/2 = FNW559GD
3/4 = FNW559GF
1 = FNW559GG
1-1/4 = FNW559GH
1-1/2 = FNW559GJ
2 = FNW559GK
2-1/2 = FNW559GL
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400 WOG
CAST IRON Y-STRAINER
Figure 559
Y-STRAINER
Dimensions (inches)
Size L H B (NPT) L1 øD
1/2 3.19 1.97 1/4" 1.39 0.59
3/4 3.75 2.68 3/8" 1.78 0.86
1 4.00 2.95 3/8" 2.09 1.02
1-1/4 5.00 3.43 3/4" 2.76 1.33
1-1/2 5.75 3.78 3/4" 3.16 1.57
2 7.00 4.33 1" 3.69 1.96
2-1/2 9.25 6.10 1-1/2" 6.43 2.71
DOC: FNW559V08 Ver. 10/2018
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Ref. No. Description Material
1 Body Cast Iron, ASTM A126 Class B
2 Cover Cast Iron, ASTM A126 Class B
3 Screen Stainless Steel ASTM A167-304
4 Gasket Non-Asbestos
5 Plug Malleable Iron ASTM A47
Standard Materials
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