• Full Protective Shield Around Inner Glass Tube
Request Information Search by Specification
Unit of Measure
Items
S21 Series Threaded Full View PVC Sight Flow Indicators

Sight Flow Indicator
S21 Series Threaded Full View PTFE Sight Flow Indicators

Sight Flow Indicator
S21 Series Full View Plastic Sight Flow Indicators

Sight Flow Indicator
S21 Series Threaded Full View PTFE Sight Flow Indicators

Sight Flow Indicator
S21 Series Full View Plastic Sight Flow Indicators

Sight Flow Indicator
Series N/A S21T
Indicating Device N/A None
Size N/A 3/4 in N/A 3/4 in N/A 3/4 in N/A 1/2 in N/A 1/2 in
End Connections N/A Female NPT
Body Material N/A PVC N/A PTFE N/A Polypropylene N/A PTFE N/A Polypropylene
End Fitting Material N/A PVC N/A PTFE N/A Polypropylene N/A PTFE N/A Polypropylene
Gasket Material N/A Fluorocarbon (FKM)
Flange Material N/A PVC N/A PTFE N/A Polypropylene N/A PTFE N/A Polypropylene
Hardware N/A 18-8 Stainless Steel (SS)
Pressure Rating @ 75 ºF N/A 140 PSIG N/A 120 PSIG N/A N/A 120 PSIG N/A
Pressure Rating @ 140 ºF N/A 110 PSIG N/A N/A N/A N/A
Pressure Rating @ 185 ºF N/A N/A N/A 50 PSIG N/A N/A 50 PSIG
Pressure Rating @ 225 ºF N/A N/A 60 PSIG N/A N/A 60 PSIG N/A
Cylinder Material N/A Borosilicate
Shield N/A Acrylic
Visible Diameter/Length N/A 2.25 in
Length N/A 4.75 in
Width N/A 2.50 in
Height N/A 2.50 in
Weight N/A 1.00 lbs
Type N/A Plain
Packaging Material N/A Cardboard Box
Options N/A
  • Buna-N or Ethylene Propylene (EPDM) Gaskets
  • Flutter Device (Vinyl or Fluorocarbon (FKM)
Application Notes N/A
  • Steam Service: Not acceptable
  • Potable Water: The glass has not been tested and certified to be acceptable for potable water
  • Vacuum Service: Suitable for vacuum service
  • Gaseous Service: Not acceptable for lightweight gases
  • Corrosion: Before ordering, verify all materials of our sight flow indicators are compatible with the service media(s), intermittently used cleaners, the environment, and cleaning processes in conjunction with the temperatures and pressures of the application(s) and future applications. John C. Ernst Co. does not make chemical compatibility recommendations. Compatibility is the responsibility of the user.
Replacement Parts N/A Please contact our sales department