4j piping connections, Notes, Toshiba – Toshiba LF494 User Manual
Page 19
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TOSHIBA
6 F 8 A 0 7 7 4
4J
Piping Connections
(1) Required Pipe Length
If various jaintsS
¡ i r c
used upiitream of the cleiector oullot, the straight pipe length us
shown in Table 4J is required.
Table 4.1 Required straight pipe length on the upstream side
L: Required straight pipe ietiglh—straight pipe length plus half length of the detector.
D: Nominal bore size (diameter)
NOTES
1. The length of
a
reducer* if connected, can be counted as a part of the straight pipe
length.
2.
No straight pipe letiglh is needed on the downstream side, if a butterfly valve is
installed downstream of the detector, do not let the valve plate protrude into the
pipe of the detector
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