Clark-Reliance Hy-Sight User manual

HYGIENIC SIGHT FLOW INDICATORS
Installation, Operation, and Maintenance Manual
16633 Foltz Parkway, Strongsville, OH 44149, USA
[phone] • clark-reliance.com
Section: T500
Bulletin: T500.3
Date: 03/16/15
Supersedes: NEW

1
Table of Contents
1. Introduction................................................................................................................................. 2
1.1. Specification ......................................................................................................................... 2
1.2. Components ......................................................................................................................... 3
2. Installation................................................................................................................................... 4
2.1. Unpacking............................................................................................................................. 4
2.2. Visual Inspection.................................................................................................................. 4
2.3. Positioning............................................................................................................................. 4
2.4. Commissioning / Start Up................................................................................................... 4
3. Maintenance................................................................................................................................ 5
3.1. Disassembly ......................................................................................................................... 5
3.2. Assembly............................................................................................................................... 5
16633 Foltz Parkway, Strongsville, OH 44149, USA
[phone] • clark-reliance.com

2
1. Introduction
Clark-Reliance®Hy-Sight™ hygienic inline flow indicators are designed and manufactured to provide an
uninterrupted window for observation of the process flow in high purity applications.
The inline tubular design has evolved to incorporate a number of features that ensure the internal area or flow
path is smooth & crevice free, exceeding the requirements as governed by both the ASME BPE and 3A
standards.
As standard units are supplied with tri-clamp ended covering imperial OD tube sizes from 1/4” through to 6”.
1.1. Specification
The specified operating conditions for your Hy-Sight unit is tube size, pressure and temperature dependant,
ensure your chosen Hy-Sight product conforms to the quick reference table shown below:
Tube
Size
OD
Operating
Pressure
Maximum Allowable Operating Temperature (°F / °C)
PSIG
Bar
g
EPDM Silicone FKM (Viton®) FEP/Silicone
1/4"
300
21
265
129
450
232
400
204
450
232
3/8”
300
21
265
129
450
232
400
204
450
232
1/2”
300
21
265
129
450
232
400
204
450
232
3/4"
250
17
265
129
450
232
400
204
450
232
1” ALT
200
14
265
129
450
232
400
204
450
232
1”
200
14
265
129
450
232
400
204
450
232
1 ½” 150 10 265 129 450 232 400 204 450 232
2”
125
9
265
129
450
232
400
204
450
232
2 ½”
125
9
265
129
450
232
400
204
450
232
3”
110
8
265
129
450
232
400
204
450
232
4”
90
6
265
129
450
232
400
204
450
232
6” (FV)
70
4.8
265
129
450
232
400
204
450
232
If in any doubt regarding specification and suitability, please contact a member of the Clark-Reliance technical
sales team, prior to installation.
DANGER
Exceeding designed operating pressures or temperatures could result in loss of
containment, sudden escape of pressure could result in severe personal injury or
property damage.
16633 Foltz Parkway, Strongsville, OH 44149, USA
[phone] • clark-reliance.com

3
1.2. Components
Each standard Hy-Sight assembly unit is comprised of five different components:
Body Component
Quantity: 1
Material: 316L Stainless Steel (standard, options available)
Head Connection
Quantity: 2
Material: 316L Stainless Steel (standard, options available)
Glass Cylinder
Quantity: 1
Material: 3.1 Borosilicate Glass (standard, Acrylic available)
Sealing O-Ring
Quantity: 2
Material: USP Class VI Elastomer, EPDM (Standard, options available)
Centralizing O-Ring
Quantity: 2
Material: USP Class VI Elastomer, EPDM (Standard)
16633 Foltz Parkway, Strongsville, OH 44149, USA
[phone] • clark-reliance.com

4
2. Installation
2.1. Unpacking
Your Hy-Sight unit is pre-assembled by Clark-Reliance and should arrive carefully packed and as one fully
assembled unit.
2.2. Visual Inspection
Upon receipt of your Hy-Sight unit visual inspect the unit for any sign of damage that may have of occurred
during shipping or mishandling.
During visual inspection, particular attention should be made to the glass cylinders internal and external
surfaces. Any sign of chips, cracks or imperfections on these surfaces may potentially reduce the safe
operating pressure as published.
In the unlikely event of damage being discovered or suspected to do not attempt installation under any
circumstances.
2.3. Positioning
The Hy-Sight unit can me mounted in any orientation, vertically or horizontally with the flow passing through in
either direction.
Locating & positioning the unit should be given careful consideration, to optimise the life time of the unit, it is
essential that the unit is not exposed to any of the following:
a) Piping loads or torsional forces. (the unit is not designed to be load bearing)
b) Sudden increases of pressure.
c) Excessive vibrations.
d) Rapidly fluctuating temperatures.
e) Other moving parts.
To maximise clarity of the media passing through the unit, we would recommend installation in a length of
pipe that has 24” of straight line pipe either side of the unit, promoting a laminar flow through the viewable
area.
2.4. Commissioning / Start Up
Following correct installation, the Hy-Sight unit should be brought into service slowly, gradually building the
pressure & temperature until the desired process values are reached. We would advise this is carried out
during a CIP process where the unit can be checked for leaks prior to the process media being introduced.
WARNING
Care should be taken during the un-packing of the unit as all units contain glass
components that have the potential to have been broken through mishandling.
16633 Foltz Parkway, Strongsville, OH 44149, USA
[phone] • clark-reliance.com

5
3. Maintenance
Periodic maintenance and inspection should be carried out on the Hy-Sight unit, the frequency of which will
vary with application. The end user should determine the appropriate maintenance schedule based on their
experience with the given application.
Maintenance & inspection procedures should focus on the following areas:
a) The screwed head connections remain tight and butted up against the body.
b) The glass cylinder for signs of wear or damage.
c) The sealing O-rings for signs of degradation, protrusion or intrusion.
d) The centralizing O-rings for signs of degradation, resulting in a loose fittings glass cylinder.
e) Corrosion to the stainless steel body or head connections.
Elastomer based O-rings degrade over a period of time, this reduction in volume greatly affects the
compressibility of an O-ring and in turn the sealing capability, resulting in a unit that may leak.
We advise that both the sealing & centralizing O-rings are replaced to fall in line with the end users current
gasket change out schedule.
3.1. Disassembly
Disassembly should only be carried out by trained personnel who are familiar with this IOM manual.
The following steps should be taken:
a) Release the tri-clamps from both ends of the Hy-Sight unit, remove the unit as a whole.
b) Unscrew the head connections from the body, one at a time.
c) Carefully remove the glass from the body.
d) Remove the O-rings from both the glass cylinder and/or the head connections.
Used O-rings should be disposed of immediately, never try to re-assemble the Hy-Sight unit with O-rings that
have already been used in service.
3.2. Assembly
Assembly should only be carried out by trained personnel who are familiar with this IOM manual.
The following steps should be taken:
a) Install one of the new centralizing O-rings over the glass cylinder, so that it sits approximately 1” away
from the one end of the cylinder.
b) Place the new sealing O-rings into the head connections (one in each), ensuring they sit snuggly into
the precision machined groove.
WARNING
Do not attempt to carry out maintenance on the Hy-Sight unit whilst installed in
pipework, ensure the pressure has been removed from the process line prior to
unit removal
DANGER
Adequate PPE should be warn when assembling or disassembling the Hy-
Sight unit, this includes but not limited to eye protection and cut proof gloves.
16633 Foltz Parkway, Strongsville, OH 44149, USA
[phone] • clark-reliance.com

6
c) Now add lubricant** to the visible surfaces of both sealing O-rings & the external threads of the head
connections.
d) Place the glass cylinder into one of the head connections, centralizing O-Ring end first.
e) Roll the centralising O-Ring down to sit between the precision groove on the head connection and the
glass cylinder.
f) Carefully place the body over the top of the glass cylinder, slipping it down and over until it engages
with the threaded head connection.
g) Loosely thread the body onto the head connection. Do not tighten the two components together, a
small gap between body & head connection should be visible.
h) Fit the final centralizing O-ring into the groove in outstanding head connection.
i) Now add lubricant** to the visible surfaces of the centralizing O-ring.
j) Slip the head connection complete with installed O-Rings over the glass cylinder and tighten loosely.
k) Tighten both head connections until they a butted up against the body.
** Ensure the lubricant used is not harmful to either the O-rings material or the end users process.
DANGER
Adequate PPE should be warn when assembling or disassembling the Hy-
Sight unit, this includes but not limited to eye protection and cut proof gloves.
16633 Foltz Parkway, Strongsville, OH 44149, USA
[phone] • clark-reliance.com