SERIES S21F FLANGED

FULL VIEW PLASTIC SIGHT FLOW INDICATOR

(Was Model 220 through 224)

Standard Features:

  • Wafer Flange (Fits Between Two Class 150 ASME Flanges)
  • Full Protective Shield Around Inner Glass Tube

Connection Sizes:

  • 1-1/2” to 8” Wafer Flanges

Standard Ratings:

PRESSURE RATINGS (PSIG)
1½” to 2”3” to 4”
Material75°F140°F180°F225°F293°F75°F140°F180°F225°F293°F
Polypropylene150130105--1109580--
PVC140110---11090---
Teflon®1201008560-100857550-
CPVC150130105--1109580--
Kynar® (PVDF)12011095753510090806525
PRESSURE RATINGS (PSIG)
6”8”
Material75°F140°F180°F225°F293°F75°F140°F180°F225°F293°F
Polypropylene706055--403530--
PVC7060---4535---
Teflon®70604530-4535255-
CPVC706055--403530--
Kynar® (PVDF)7060554015403530255
DIMENSIONS
1-1/2”2"3"4"6"8"
Overall Length4-1/2”5”5-1/4”5-5/8”6-1/8”6-1/4”
Visible Length2-1/2”3”3-1/4”3-5/8"4-1/4”4-1/4”

Standard Wetted Materials:

  • End Fittings: Polypropylene, PVC, CPVC, or Kynar® (PVDF)
  • O-Ring Seals: Fluorocarbon (FKM)
  • Glass: Borosilicate Cylinder

Standard Non-Wetted Materials:

  • Hardware: 18-8SS
  • Shield: Acrylic

Options:

  • Buna-N or Ethylene Propylene (EPDM) Gaskets
  • Flutter Device (PTFE/Fluorocarbon)

Application Notes:

  • 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 designed 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:

  • Please contact our sales department

Alternate Equipment:

Model Number Matrix
Model Number Matrix