PN 20 is equal to ANSI 150 & ANSI 300 equals PN 50.
SW = socket weld flanges flange F.F = flat
Class 150 (AKA 150#) refers to the pressure/temperature rating of the valve. That class applies to steel and alloy steel valves. Common classes are 150, 300, 600, 900, 1500, 2500, 4500. There are also interpolated ratings and special classes, which basically are intermediate ratings. For more information click the Related Link shown below.
the low pressure side of the system must not be pressurize to more than 150 psig
Pipe ratings are the operating pressures that a pipe can be constantly operated at. There are a few classes of plumbing pressures. Schedule 40 black iron is 150 psi class, meaning that the "operating pressures" are 150 psi. The 300 psi class is the class for most schedule 80 black iron (no seam [welded]). Each class has it's own fittings at the same ratings. The fittings wont be listed as a schedule just a class or a psi rating. Other ratings can exceed 3000 psi for hydraulic actuated machinery applications. Again, these classes have there own set of 3000 class fittings which are usually forged instead of cast. The ratings include a safety factor of 2 and an extra surge allowance of 100 psi for very short term operation. The rating only goes to the yield strength of the pipe not the failure strength, know the difference. So the burst pressures someone else gave as the pressure rating (2700 +psi) is wrong unless the person asking this question was trying to make a "pipe bomb."
Ansi 150 is a pressure grade of flange ie. Ansi #150 Flange. For steel flanges this is specified by ANSI B16.5.
It's #150.
*Any flange having different MOC bears the rating with respect to international standards like ANSI B16.5.*It is a designed pressure that a flange can withstand.*For example a flange is having the following specification:25NBX150#,FORGED CARBON STEEL as per ANSI B16.5is having 150 psi flange rating.It can withstand 150 psig pressure safely.(Noting that in most cases the pressure-temperature charts of a given spec will allow for normal operating pressure to far exceed the class rating at ambient temperature. For example a 150# flange in A105 Carbon Steel will rate for 285PSI at -20 to 100 Degree F. For more information see www.texasflange.com The original intent was to class the parts to safely hold the given pressure at relatively high temperature. Since often times the operating temperatures are much lower the flanges can usually be used well above their given rate. When in doubt take your design criteria to a company that deals in it and ask for the specifics.)*Pipe flanges that are made to standards called out by ASME/ANSI B16.5 or ASME/ANSI B16.47 are typically made from forged materials and have machined surfaces. They are typically in "Pressure Classes" such as 150#, 300#, 600#, 900# 1500#; however, ASME B16.47 still recognizes the 75# or "Class 75" flange for certain low pressure and low temperature applications. These "Pressure Classes" have both pressure and temperature ratings for specific materials. The flange faces are made to standardized dimensions and are typically "flat face" "raised face" "tongue and grove" or "ring joint" styles, although other obscure styles may be permitted. Flange designs are available as "welding neck" "slip-on" "lap joint" "socket weld" "threaded" and also "blind flange". The gasket type and bolt type are generally specified by the standard(s); however, sometimes the standards refer to the ASME Boiler and Pressure Vessel Code (B&PVC) for details ( see ASME Code Section VIII Division 1 - Appendix 2 ). These flanges are recognized by ASME Pipe Codes such as ASME B31.1 Power Piping, and ASME B31.3 Process Piping. Materials for flanges are usually under ASME designation: SA-105 , SA-266 or SA-182.*Please visit following link and download the software, you will get both pressure v/s temperature rating of flange:
The number (e.g. 150) is the lb force the flange is rated to.
The Class ranges of ANSI Standards refers to the pressure and temperature limits of usage for the Product. The class ranges from 150 and goes upto 2500. They denote the different pressure ranges. For example, A 316 Stainless Steel valve in class 150 can be used only upto 275psi Same 316 Stainless Steel valve in class 1500 can be used only upto 3600psi Does that clears your doubt?
PN 20 is equal to ANSI 150 & ANSI 300 equals PN 50.
No. The answer is same as class 150
SW = socket weld flanges flange F.F = flat
Type your answer here... 150 wsp means 150 pounds working steam pressure, and 500 wog means water oil gas, there is a temperature limit on the valve, typically 200degrees Fahrenheit. The steam maximum for the valve with the 150 wsp is 150 pounds per square inch. When you ask if the valve is good for 260 psi, you need to ask if it is water, oil or gas, BUT not steam. 150 wsp is maximum 150 pounds of steam pressure.
20A.
Factory rating for 302 (5.0 litre) in 1991 F-150: 185 H.P. 270 LBS. FT. Torque.
Class 150 (AKA 150#) refers to the pressure/temperature rating of the valve. That class applies to steel and alloy steel valves. Common classes are 150, 300, 600, 900, 1500, 2500, 4500. There are also interpolated ratings and special classes, which basically are intermediate ratings. For more information click the Related Link shown below.