What is ANSI class 150 flange?
What is ANSI class 150 flange?
The American National Standards Institute (ANSI) Class 150 is a system of dimensional standards for weld neck, threaded, slip-on, lap joint, socket weld and blind flanges. Dimensions for facing, bolts and studs are also included in ANSI Class 150.
How many bolt holes in a 10 flange?
Diameters and bolt circles for standard ASME B16. 5 flanges – 1/4 to 24 inches – Class 150 to 2500.
| Nominal Pipe Size NPS (inches) | Class 400 | |
|---|---|---|
| Diameter of Flange (inches) | Diameter of Bolt Holes (inches) | |
| 6 | 12-1/2 | 1 |
| 8 | 15 | 1.12 |
| 10 | 17-1/2 | 1.25 |
What does ANSI rating mean?
the American National Standards Institute
ANSI ratings are a set of standards created by the American National Standards Institute to designate the pressure-temperature ratings of pipe flanges. Traditionally, valves that have flanges connected are described with ANSI Class ratings.
What size bolts for a 10 flange?
Flange Bolting Chart
| 150 LB. Flanges | ||
|---|---|---|
| Nominal Pipe Size | # Bolts or Studs | Dia of Bolts or Studs |
| 8 | 8 | 0.75 |
| 10 | 12 | 0.88 |
| 12 | 12 | 0.88 |
How do you know what size flange to get?
To determine the best flange size for you, you’ll need to measure your nipple. Take a tape measure or ruler and measure the diameter, or width across, of your nipple in millimeters. Do not include measurements for your areola, the larger part around your nipple. Select your flange size based on your measurement.
What pressure is a 150 flange rated for?
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.
