www.h2flow.net
•
Tel: 888-635-0296 (Toll Free)
OR
(+1) 419-841-7774 (International)
TIGHTENING LID SCREWS
When installing the Retrofit versions of FlowVis® or when removing and re-installing the FlowVis® lid assembly, it is
important to adhere to the following procedure:
1. Make sure that the o-ring on the underside of the lid is undamaged, lubricated with silicone (such as Boss 820)
and is in-place without twists.
2. Ensure flapper hinge pin is centered.
3. Carefully lower the lid onto its valve body (or Tee in the case of the 3”
/ DN80 and 4” / DN100 models), making sure that the o-ring stays in
place.
4. Insert by hand the (8) stainless steel screws but do not tighten at this
stage.
5. Using a hand Phillips-head screwdriver, slowly tighten the screws in
a diagonal pattern, per the sequence to the right. Do not fully tighten
one screw before proceeding to the next, i.e., pull them down slowly
multiple times to avoid stressing and cracking the lid. Screws should be
tightened to a final torque of 25 inch / pounds or 34 Nm.
FLOW RANGE
9
1
2
3
5
4
6
7
8
Lid Assembly & Operation
FlowVis® Models
Pipe Size Min Flow -
GPM U.S.
Min Flow -
LPM
Max Flow -
GPM U.S.
Max Flow -
LPM
FV-C-15, FV-C-15-L, FV-J-R-15, FV-P-R-15, FV-
H-R-15, FV-C-L-DN40
1.5” /
DN40
10
40
90
360
FV-C, FV-C-L, FV-J-R, FV-P-R, FV-H-R,
FV-C-L-DN50/65
2” / 2.5” /
DN50/65
10 / 20
40 / 80
110
400
FV-C-S, FV-C-S-L
2” / 2.5” /
DN50/65
30
N/A
110
N/A
FV-3, FV-3-L, FV-L-DN80
3” / DN80 90
N/A
220
833
FV-4, FV-4-L, FV-L-DN100
4” / DN100 160
N/A
300
1136
FV-C-Saline
2”
20
80
100
400
Flow Range:
