16
Determining Mag Probe Riser Size
Probe Riser Pipe Installation
A riser assembly consisting of a riser and riser cap, should be used for Mag Probe installation. Riser caps ( see
page 19) are normally fitted at the time of probe installation. If the probes are not to be installed immediately, cap
the riser.
Table 1 lists minimum riser dimensions for use with Veeder-Root mag probe float sizes.
DN = Diameter Nominal, NPS = Nominal pipe size, Pipe type is iron or schedule 40 steel
Table 1. Dimensions for Steel Riser Pipes and Mag Probe Floats
V-R Nominal
Float Size
(inch)
V-R Float OD
inch (mm)
Riser Size
Recommended
NPS Riser Size
inch (mm)
NPS Nom Pipe
(inch)
DN Nom Pipe
(mm)
ID Nom Pipe
(inch)
ID Nom Pipe
(mm)
1 1.155 (29.34) 1 25 1.049 26.65 2 (50)
2 1.875 (47.63) 2 50 2.067 52.51 2 (50)
3 3.015 (76.58) 3 80 3.068 77.93 3 (80)
4 3.765 (95.63) 4 100 4.026 102.26 4 (100)
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