Export Wholesales Spectacle Blind Flange Figure 8 Flanges - China

A Spectacle Blind Flange(also called Figure 8 flange) is a pressure-retaining plate with one solid end and one open end connected with a web or tie bar.

Size: 1/2″ to 96″ Pressure class: Class 150 to Class 2, 500, PN 2.5 to PN 250 Facing: RF / RTJ Spectacle flanges, also known as spectacle blind flanges or Figure 8 flanges, are most commonly used on piping systems that need to be separated regularly or where the flow through the systems is regularly stopped.

One end of the spectacle flange is solid, while the other end has a hole in the center.

The spectacle flange can be rotated to place either the solid or hollow end within the pipe system, thereby opening or closing the flow.

Spectacle blind flanges types: There are three types of spectacle blinds: 1 - Flat face spectacle blind (FF) flange Similar to a flat face flange, the surface of the disc is flat (suited for flat face gaskets, for low-pressure applications).

2 - Raised face spectacle blind (RF) flange likewise raised face flanges, there is an additional thickness on the surface of the disc.

This type fits semi-metallic gaskets, as the spiral wound type.

3 - Ring joint face spectacle blind (RTJ) flange a groove is inscribed on the surface of the disc.

This type is used in conjunction with ring joint gaskets.

Specification of Spectacle Blind Flanges Standards ANSI/ASME B16.5, B16.47 Series A & B, B16.48, EN-1091, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B , MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092

Size Chart 1/2″ to 96″

Pressure Calculation in DIN 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64 Spectacle Blind Flange

Pressure Rating ANSI Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS Spectacle Blind Flange

UNI 6Bar 10Bar 16Bar 25Bar 40Bar Spectacle Blind Flange

JIS 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K Spectacle Blind Flange

Coating Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized Spectacle Blind Flange

EN 6Bar 10Bar 16Bar 25Bar 40Bar Spectacle Blind Flange

Most common types of Spectacle Blind Flange Forged / Threaded / Screwed / Plate

Connect Type/ Flange Face Type Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove Functions: Blind flange VS.

spectacle blind flange The function of the blind flange is the same as that of the head and the pipe cap, except that the seal of the blind plate is a detachable sealing device, and the seal of the head is not ready to be opened again.

There are many types of sealing surfaces, including plane, convex, concave, convex, mortise and groove surfaces, and ring connection surfaces.

Materials are carbon steel, stainless steel, alloy steel, copper, aluminum, PVC, and PPR.

The spectacle blind plate is commonly used for the pipeline flange, which needs to change the process.

The material mainly includes carbon steel, stainless steel, and alloy.

It can be selected according to the pipeline pressure grade and pipeline medium.

Spectacle Blind Flanges: Applications, Benefits, and Selection, please click here.

Company Contact:

• Posted By: HEBEI JINSHENG PIPE FITTING MANUFACTURING CO., LTD,

• Phone: 86-18032153916

• Address: Wuliyao Industry Zone, Yanshan County, , Cangzhou , Hebei , China

• Email:

• Website: https://jsfittings.com/

• Business Description: We are committed to providing quality products and services at competitive prices, including but not limited to steel pipe flange,buttweld elbow,butt weld tee,pipe Reducers and steel pipe .
  
  We have earned ISO9001: 2015, CE, GOST-R, and passed Pressure Equipment Directive (PED) certification.
  
  All this comes with exemplary customer service and a comprehensive warranty that guarantees your satisfaction.