FM Approved
PFA and Glass Wetted Surfaces
The FLO-VU 360L sight glass; 1" through 12" diameter, features a full 360° unobstructed view with the high temperature and near universal corrosion resistance of PFA.
- FLO-VUSight Flow Indicator
- Double-SureSight Flow Indicator
- Pure-VuSight Flow Indicator
- Sight-Float Check ValveSight Flow Indicator
FLO-VU® Unique Seal Design
A unique PFA /Viton® envelope type gasket provides a secure, bubble tight seal even in applications with extreme thermal cycling.
150psi Pressure Rating
All units have a full 150 psig pressure rating at temperatures from -20°F to 350°F.
Lexan® Impact Shield
A Lexan® outer safety shield (with an unobstructed 360° view) is provided on the FLO-VU 360L.
Standard overall lengths of 8" are stocked at the factory, with quick delivery available for special lengths. 316 s.s. flanges (PFA lined) and 304 s.s. hardware provide external corrosion resistance.
Additional Features:
- Passes steam-cold water cycling tests (ASTM F-423)
- 100% testing and certification
- Polycarbonate or Slotted Metal Shields
- Availability of unlined 316 S.S. Flanges with the FLO-VU 360M.
FLO-VU® Options Available:
Gas Purge Ring - for purging and environmental control of the annular area between the glass tube and shield.
General Purpose and Explosion Proof Light - for back-lighting through windows in difficult lighting installations.
Vertical Drip Tube - for easy viewing of low flow rates in vertical installations.
Horizontal Flapper - for visual indication of low rates in horizontal installations.
Viton® is a registered trademark of DuPont Dow Elastomers
Specifications
- Pressure Rating 150 @ 350°F
- Temperature Range -20° to 350°F
- Vacuum Rating Full Vacuum
- Flange Material 316 St Steel
- Glass Tube Borosilicate
- Impact Shield Lexan®
- Flange Liner PFA
Dimensions
| Nominal Diameter | Lengths Available | Lengths Stocked |
|---|---|---|
| Lengths 5" through 50" … 8" OAL Stocked at Factory | ||
| 1" | 5"-50" | 8" |
| 1 1/2" | 5"-50" | 8" |
| 2" | 5"-50" | 8" |
| 3" | 5"-50" | 8" |
| 4" | 5"-50" | 8" |
| 6" | 5"-50" | 8" |
| 8" | 5"-50" | 8" |
| 10" | 5"-50" | 8" |
| 12" | 5"-50" | 8" |
Double-Sure™ Dual Containment Glass Sight Flow Indicators
Double-Sure Dual Containment Glass Sight Flow Indicators are specifically designed to provide an extra level of safety, reliability and protection in high pressure and high temperature conditions typically found in ultrapure processing environments.
- Dual Containment
Each unit is double sealed for extra safety and reliability. - Pressure
rating 150 psig - Operating Temperature
-20°F to 350°F (-29°C to 177°C) - 100% Tested
The inner chamber is subjected to both a 225 psig hydrostatic pressure test and a 150 psig helium bubble test while the outer chamber is subjected to a 150 psig helium bubble test. - Lexan® Impact Shield
A Lexan outer safety shield with an unobstructed 360° view is standard on all Double-Sure Dual containment Sight Flow Indicators to protect the glass tube from external damage and to provide scatter protection. - PFA and Glass-Wetted Surface
PFA and borosilicate glass-wetted surfaces offer high temperature corrosion resistance and absolute product purity. - Unique Seal Design
PFA and Viton® B gasket provides a secure, bubble-tight seal in applications with extreme thermal cycling. - Rugged Construction
All Double-Sure Dual Containment Sight Flow Indicators have heavy-duty tie rods and flanges for decreased deformation under external loads. - Variety of Sizes
Available in diameters of 1", 1-1/2" and 2" in lengths up to 50".
Pure-Vu Sanitary Sight Flow Indicator
The Pure-Vu Sight Flow Indicator is made for pharmaceutical, food, and other sterile process industries requiring sanitary cleanliness. Designed to mount in-line for high purity pipe systems with tri-clamp connections in sizes 1" - 4" diameter.
Providing a sterile, clear borosilicate glass tube 360° view, the sight area is easily seen, with a greater view than bull's eye type sight glass.
An all-stainless steel polished construction is close tolerance sealed to prevent contamination using FDA compliant materials. A polycarbonate cover shield over the glass prevents mechanical damage and in the event of pressure upset, will prevent a spray out. The unit is rated for 150 psi pressure/Full vacuum from -20°F to 350°F. Each unit is hydrotested and helium bubble checked prior to shipment.
The unit has 4 tie rods that tighten only to the proper torque necessary to seal the unit. Components can be replaced in the field. The sightglass can be CIP, sterilized, or autoclaved.
Pure-Vu™ sight flow indicators offer the ultimate design for safety in process. A unique seal design offers optimal performance in a sanitary process environment.
Hightlights
- Sizes 1" - 4" diameter
- Borosilicate Glass Tube
- 360° View
- Stainless Steel Polished Construction
- FDA Compliant Materials
- Rated for 150 psi
- Full Vacuum from -20°F to 350°F
FLO-VU® Sight-Float Check Valve
The FLO-VU Sight-Float Check Valve is intended for use in vertical sampling applications and as a means of preventing vacuum scrubber contamination due to over-filling of the vertical sample leg or vessel before draining back into the sample container.
Standard construction includes type 316 stainless steel flanging, 304 hardware and PFA / glass lined wetted surfaces. Polycarbonate shield tubes are provided on all units. The hollow ball float is molded from PFA and seals into a soft seat made of a white Chemraz® fluoroelastomer.
Units have a full vacuum to 150 psi rating at temperatures from -20° up to 300°F.
Options Available:
Gas Purge Ring - for purging and environmental control of the annular area between the glass tube and shield.
General Purpose and Explosion Proof Light - for back-lighting through windows in difficult lighting installations.
Hightlights
- Type 316 stainless steel flanging
- 304 hardware and PFA/glass lined wetted surfaces
- Polycarbonate shield tubes
- PFA hollow ball float
- Chemraz® Fluoroelastomer Soft Seat
- Full vacuum to 150 psi
- Temperatures from -20° up to 300°F
