Name: Ansi B16.47 Series B Flanges
Brand: New Era Pipes & Fittings
Availability: InStock
Rating: 5 (25 reviews)

Question 1

How do Series B flanges differ from Series A flanges?

Accepted Answer

Series B flanges are thinner, lighter, and use more bolts of smaller size, while Series A flanges are thicker and heavier with fewer, larger bolts. Series B is preferred in non critical, general industrial service, whereas Series A is chosen for high pressure, high stress pipelines.

Question 2

What pressure classes are available in Series B flanges?

Accepted Answer

They are manufactured in Class 75, 150, 300, 400, 600, and 900, which makes them suitable for low to medium pressure applications. For extremely high pressure systems, Series A flanges are typically recommended.

Question 3

What surface finishes are available for Series B flanges?

Accepted Answer

They are supplied with raised face (RF), flat face (FF), or ring type joint (RTJ) sealing surfaces. The finish selection depends on the gasket type and sealing requirements of the piping system.

Flanges Types	Slip On, Weld Neck, Long Weld Neck, Threaded, Blind, Companion, Lap Joint
Class	150 Lbs, 300 Lbs, 600 Lbs, 900 Lbs, 1500 Lbs, 2500 Lbs Asa 150, Asa 300, Pn 6, 10, 16, 25, 40, 64, 100, 160
Size	1/2″ (15 Nb), 48″ (1200nb) Dn10~dn5000
Type	Raised Face (rf), Flat Face (ff), Ring Type Joint (rtj), Lap Joint Face (ljf), Large Male Female (lmf), Small Male Female (smf), Large Tongue & Groove, Small Tongue, Groove

Ansi B16.47 Series B Flanges