What are the different classes of flanges?
The ASME pressure classes for flat-face flanges are Class 125 and Class 250. The classes for ring-joint, tongue and groove, and raised-face flanges are Class 150, Class 300, Class 400 (unusual), Class 600, Class 900, Class 1500, and Class 2500.
How are flanges rated?
The term “flange rating” (or class) refers to the maximum pressure (in psi or bars) that a flange withstands at increasing temperatures. Flanges with a higher rating (class) are stronger than flanges with lower ratings, as they bear more pressure at increasing temperatures.
What is a class 600 flange?
The ASME B16. 5 – 1996 is a standard for Pipe Flanges and Flange Fittings that could be used in piping systems of various industries. The specified ASME B16. 5 Class 600 Flange covers materials, tolerances, pressure-temperature ratings, marking and testing.
What is difference between ASTM and ASME?
ASTM represents quality for materials to be used in products which are described in ASME. ASTM International is one of the largest voluntary standards developing organizations in the world. ASME standards represents the dimensions and tolerances with respect to each material class.
What is a Class 250 valve?
The NIBCO® flanged cast iron gate valve may be used in commercial and industrial applications, including hot and cold water, HVAC, steam, gas and other general utility services. …
What is the standard size for a flange?
Type ISO Flanges Standard (ISO 7005-1,ISO 9624)
What is a Class 150 flange?
Threaded Pipe Flanges, Flange ANSI B 16.5 Class 150, Class 150 ANSI B 16.5 can be used in extremely high pressure services, particularly at or near atmospheric temperature. We offer these Threaded Pipe Flanges, Flange ANSI B 16.5 Class 150 in proper packaging to avoid any damage during the transportation.
What size is pipe flange?
flange dimensions for pipes ranging 1/2″ to 24″ – in classes ranging 150 to 2500. Note that the ratings are in steps with terminology like ASME class xxx or API xxxx.
What is an ANSI flange?
Class#150 flange