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Roughly what length of straight pipe should be used on the IN side of a PF□ product?
In order to maintain the accuracy of the specifications, set the following lengths of straight pipe on the inlet side. Do not use a pipes with abrupt changes in sizes on the inlet.
PF2A/PF2W/PF2D series: Straight pipe length of at least 8 times the piping port.
LFE series: Straight pipe length of at least 5 times the piping port.
PFMB/PFMC/PF3W704, 720, 740, 504, 520, 540: Straight pipe length of at least 8 cm.
PF3W711, 511, PVC pipe: Straight pipe length of at least 11 cm.
PF3W721, 521: Straight pipe length of at least 2 cm.