ANSI B16.5 Class 400 Raised Face Blind Flange RF (in)

Star Tubes and fittings provide various varities and classes in Raised face Blind Flange. ANSI B16.5 Class 400 Raised Face Blind Flange the most common type used in process plant applications, and is easily to identify. We are Manufacturers and Supplier of raised face and flat face Blind Flanges in India. We provide raised face Blind Flanges in all sizes, grades, specification and materials in India.

The purpose of a RF flange is to concentrate more pressure on a smaller gasket area and thereby increase the pressure containment capability of the joint. Raised face and flat face Blind Flanges are subject to high pressure for critical applications. There are different standards of blind flanges . We are ANSI B16.5 Class 400 Raised Face Blind Flange RF .

Pipe Size(NPS) Outside Diameter of FlangeA Diameter of Raised FaceB Thickness of FlangeC Number of Bolt HolesNBH Diameter of Bolt HolesDBH Bolt Circle DiameterP Approx Weight(lb)

AW

1/2 3 3/4 1 3/8 9/16 4 5/8 2 5/8 2
3/4 4 5/8 1 11/16 5/8 4 3/4 3 1/4 3
1 4 7/8 2 11/16 4 3/4 3 1/2 4
1 1/4 5 1/4 2 1/2 13/16 4 3/4 3 7/8 6
1 1/2 6 1/8 2 7/8 7/8 4 7/8 4 1/2 8
2 6 1/2 3 5/8 1 8 3/4 5 10
2 1/2 7 1/2 4 1/8 1 1/8 8 7/8 5 7/8 15
3 8 1/4 5 1 1/4 8 7/8 6 5/8 20
3 1/2 9 5 1/2 1 3/8 8 1 7 1/4 29
4 10 6 3/16 1 3/8 8 1 7 7/8 33
5 11 7 5/16 1 1/2 8 1 9 1/4 44
6 12 1/2 8 1/2 1 5/8 12 1 10 5/8 61
8 15 10 5/8 1 7/8 12 1 1/8 13 100
10 17 1/2 12 3/4 2 1/8 16 1 1/4 15 1/4 155
12 20 1/2 15 2 1/4 16 1 3/8 17 3/4 226
14 23 16 1/4 2 3/8 20 1 3/8 20 1/4 310
16 25 1/2 18 1/2 2 1/2 20 1 1/2 22 1/2 398
18 28 21 2 5/8 24 1 1/2 24 3/4 502
20 30 1/2 23 2 3/4 24 1 5/8 27 621
22 33 25 1/4 2 7/8 24 1 3/4 29 1/4 685
24 36 27 1/4 3 24 1 7/8 32 936