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Flapper
Stainless Steel
Unit of Measure

Specifications

Series

 N/A S16FB

ASME Class

 N/A 300

Former JCE Model Number

 N/A 252SM

Size

 N/A 4 in

End Connections

 N/A 300 lb Flange

Type

 N/A Flapper

Window

 N/A Double

Visible Diameter/Length

 N/A 4.25 in

Weight

 N/A 135.00 lbs

Packaging Material

 N/A Wood Crate

Standard Wetted Materials

Body Material

 N/A 316 Stainless Steel

Gasket Material

 N/A PTFE 3545

Indicating Device

 N/A Flapper

Lens

 N/A Tempered Borosilicate

Flapper Material

 N/A 316 Stainless Steel

Standard Non-Wetted Materials

Glass Retainer

 N/A Carbon Steel

Fasteners

 N/A Plated Carbon Steel

Standard Ratings

Pressure Rating @ 100 ºF

 N/A 720 PSIG

Pressure Rating @ 500 ºF

 N/A 480 PSIG

Dimensions

Length

 N/A 13.25 in

Width

 N/A 13.00 in

Height

 N/A 10 in

Application Notes

Application Notes

 N/A
  • Saturated Steam Service: Upgraded gaskets and mica shields are recommended for saturated steam service. All ratings stated on our website and in our literature are non-steam ratings unless specified otherwise. Always contact our sales office for saturated steam ratings when needed.
  • Vacuum Service: Acceptable except when using with hard gaskets
  • 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

Replacement Parts

 N/A Please contact our sales department

Note

Note

 N/A Contact us for a shipping quote