What are the classes of flanges?

Flange Class There are seven Class 150#, 300#, 400#, 600#, 900#, 1500#, and 2500#. Higher the flange ratings, heavier the flange, and can withstand higher pressure and temperature. So, when the temperature goes up for a given material, the maximum allowable pressure goes down, and vice versa.

What are ASME flanges?

ASME Certified Flange Types. With a range of designs, different ASME Certified flanges offer specialized support in covering, closing, and connecting industrial pipe systems. The six most common designs include: Slip-on Flanges, which slide on over a pipe with a close fit.

What is ASME Class 150 pressure rating?

As temperature increases, the pressure rating of the flange decreases. For example, a Class 150 flange is rated to approximately 270 PSIG at ambient conditions, 180 PSIG at approximately 400°F, 150 PSIG at approximately 600°F, and 75 PSIG at approximately 800°F.

What is flange class rating?

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 B flange?

Series B flange was also formerly known as API 605 flange. Term B16. 47 or B 16 47 or ANSI B 16 47 are all used interchangeabily and refers to the same standard. ASME B16. 47(Large Diameter Steel Flanges) is a standard for large diameter steel pipe flanges sized from NPS 26 through NPS 60.

What is difference between ASME and ANSI?

ANSI establishes and accredits performance and quality standards for products and services in a wide variety of sectors, while ASME is primarily focused on boilers and pressure vessels.

What is ASME vs ANSI?

What is ANSI and ASME?

The American National Standards Institute, also abbreviated as ANSI, and the American Society of Mechanical Engineers, also abbreviated as ASME, are both private, non-profit organizations mainly focusing on bringing uniformity in voluntary standards used in the engineering discipline.