H2flow Controls
FlowVis®
15
Installation
8.5 Installation of Saddle-clamp style models (FV-6, FV-6-L, FV-8
and FV-8-L)
FlowVis models FV-6 and FV-8 use Schedule 80 Saddle Clamps. Dimensional
details are as follows:
FlowVis Model Saddle Size Hole to be Drilled
in Pipe
Angle for Hole /
Saddle Clamp
FV-6 / FV-6-L
6” x 3”
3”
45
°
FV-8 / FV-8-L
8” x 4”
4”
45
°
When drilling the hole, the following
precautions should be taken:
1.
Prior to drilling, make sure that the
intended hole will be at 45 degrees from the
perpendicular.
2.
Ensure that the intended position
will allow the user to read the FlowVis
scale on the lid. If this is not possible, then
we recommend adding a FlowVis Digital
upgrade to enable the flow reading to be read
remotely.
NOTE:
Models FV-8 and FV-8-L
include FlowVis Digital as standard.
3.
Do not damage the external pipe area around the drilled hole. Surface damage
will result in the Saddle’s o-ring being unable to provide a watertight seal.
4.
If using a hole saw, it is advisable to run the drill in reverse, and although this
will take longer to cut through the pipe, it will be less aggressive and will cut a
cleaner hole.
5.
Be sure to obtain the correct sized hole saw.
Before securing the Saddle Clamp to the pipe, apply a good quality o-ring lubricant to
the o-ring. Install the o-ring into the socket on the underside of the upper-half of the
Saddle-Clamp. Position the Clamp to the pipe so that the o-ring is centered around the
drilled hole. Evenly tighten the nuts and bolts until both halves of the Saddle Clamp
are mated together.
