Flat Perforated Strainers
(Series FP / FFP)
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Flat Perforated (FP) and Flat Face Perforated (FFP) strainers are the simplest to fabricate and consequently, are the least expensive of all strainers. The penalty, however, is that they clog rapidly and have relatively high pressure drop losses, due to an open area less than 50% of the pipe flow area. Flat strainers should only be used where: 1) Lowest initial cost is mandatory, or 2) where the piping can only be separated enough to insert this type of strainer. |
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Standard Material: 12 ga. perforated plate
5/16" dia. holes on 7/16" centers (46% open area, 6 holes/sq. in.)
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Denotes Required Specifying Information |
Strainer Style (i.e. FP, FFP) |
Line size (e.g. 10") |
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Mating Flange class and type (e.g. 150# RF) |
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Material of construction (e.g. 304 S.S.) |
Denotes Optional Information |
Wire mesh overlays available (Click
here to see available sizes & picture) |
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Alternate hole size or plate thickness (Click
here to see available sizes & picture) |
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Dimension changes |
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Marking or tagging requirements |
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Special QA, traceability or paperwork requirements (e.g. CMTR's) |
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Oxygen cleaning (click
here to see Mack Iron cleaning capabilities) |
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Machined flange (click
here for available gasket surface finishes) |
Pressure drop
information (click here
for required pressure drop information) |
FP STRAINERS AVAILABLE FOR JUST-IN-TIME DELIVERY
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Carbon Steel 1-1/2" |
304 SS 1-1/2" |



Denotes Optional Information