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Should stub ends of a lap joint stub end flange have the same rating if two lap joint stub end flanges are to be connected to each other?
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∙ 15y ago
yes
Wiki User
∙ 15y ago
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What is the pressure rating for a Class 75 flange?
75 psig For pipe flanges the class rating is the pressure rating for the flange, in pounds per square inch - gauge (psig).
Is pn16 flange rating is equal to ansi 300 flange rating?
It's #150.
I need a spectacle blind flange rating chart is there one?
A few months ago, I was asking the same question. I did a search online to see if I could find a pressure rating chart and came across the Sweco Fab website. The fact of the matter is that the charts on the Sweco Fab are a little confusing and do not provide accurate information. I tried to contact Sweco Fab to get more information and asked if they could send me a pressure rating chart. They never responded to my request. There are a lot of variables that go into determining the pressure rating of a spectacle blind. Size of pipe, flange size, type of material, corrosion resistance, thickness of blind, etc. Your best bet is to manually calculate the pressure rating by using equation (15) in section 304.5.3 found in the ASME B31.3-2002 specification. If you are using a standard thickness you can solve for pressure. I would recommend using the standard thicknesses that can be found in ASME B16.48-2005 (Line Blinds) specifications. If you don't have the time, ability, or resources to figure out the pressure ratings yourself, you can also contact manufacturers of spectacle blinds and request the information. I didn't have any luck with Sweco Fab, Inc. but I'm sure there are manufactures out there that are willing to help.
What effect has the number of armature paths upon the current carrying ability of generator?
What effect has the number of armature paths upon the current-carrying ability of a generator?
What is servo torque rating?
The torque of a servo is how much weight the servo is rated for. Most of the weight ratings will have two different numbers for the rating, one for dead weight, and one for dragging.
What is the pressure rating for a Class 75 flange?
75 psig For pipe flanges the class rating is the pressure rating for the flange, in pounds per square inch - gauge (psig).
Is pn16 flange rating is equal to ansi 300 flange rating?
It's #150.
What is Difference Between FF & RF Flanges?
Flanges are an integral part of the Piping industry. These Flanges are used to form a link between two different Pipes. Flat (FF), elevated (RF), ring joint (RTJ), lap joint (M&F), tongue, and groove (T&G) are the 6 styles of flange faces needed. Multi-faced flanges need different gaskets and should never be matted to avoid joint leakage. The flanges RF and FF may have various finishing forms (i.e. roughness at the top of the surface): flat, lined, and serrated. Although flanges themselves have specific pound scores that reflect the levels of pressure and temperature to which they can operate, the individual flange faces vary depending on the context within which they are to be used.Various types of flange faces are used to seat the sealing gasket content as the contact surfaces. The faces are panels which matt with flanges, funnels or valves. Flange faces must be smooth enough to ensure that the flanges are fastened together to maintain a stable, leak-free seal. For this article, we must concentrate on three common types of flange faces; flat faces raised faces, and ring-style joints.Flat Face Flanges (FF)The flat-facing flange has a gasket surface in the same plane as the face of the bolt frame. Goods using flat face flanges are often those in which mold is used to make the matching flange or flanged cover. Flat face flanges should never be placed on an inverted side flange. ASME B31.1 notes that the raised face on the carbon steel flange must be removed while attaching flat face cast iron flanges to carbon steel flanges and that a full face gasket is needed. This is to prevent the small, brittle cast iron flange from splashing into the void created by the carbon steel flange’s raised nose.This type of flange face is used to make equipment and valves for all applications where Cast Iron is used for making. Cast Iron is brittle and is commonly used only in applications with low temperature, low pressure. The flat surface allows full contact of the two flanges across the entire face. Flat face flanges (FF) have a touch surface that is equivalent in height to the bolting thread of the flange. Full face gaskets are used between two flat side flanges, typically of the soft kind. According to ASME B31.3, as the resultant flanges joint will possibly leak, a flat face flange should never be matted with an elevated face flange.Raised Face Flanges (RF)The Raised Face Flange is the most common type used in process plant applications, and can be easily identified. It is referred to as a face raised because the surfaces of the gasket are positioned above the face of the bolting circle. Each style of mask requires a large range of gasket styles to be used, including varieties of flat ring sheets and metallic composites such as spiral-wrapped and double jacket forms.An RF flange aims to focus further pressure on a smaller area of the gasket and thus improve the joint’s pressure control capacity. Diameter and height, by pressure class and diameter, are described in ASME B16.5. Flange pressure level specifies the height of the face that is lifted. An RF flange aims to concentrate more pressure on a smaller area of the gasket, thereby increasing the joint’s pressure containment capacity. Diameter and height, by pressure class and diameter, are described in ASME B16.5. Pressure flange rating.
What are the pressure rating for 150 ansi flanges?
20
What is the max pressure test rating for flanges B16.5?
19 bar max
What does RFFE flange rating stand for?
Raised Face Flanged End
Should Power sources connected in parallel have the same voltage rating?
yes
What is a flange rating?
*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:
What does RFTBE flange rating stand for?
Raised face through bolted ends
What does PN 40 mean?
Pressure Nominal 40; 40 bar pressure rating for European flange
What type of conductor should be used for wiring on fixture?
The conductors on and in the lighting fixture should have an insulation rating of 105 degrees C. The supply conductors to the junction box that the fixture is hung from or connected to should have an insulation rating of 90 degree C.
What is a counter flange and how is it different from a normal flange?
The term"counter flange" is used in Europe to refer to a mating flange to make up a flange pair. For example a "counter flange" attached to a pipe must have the same bolt circle diameter, number of bolts, and size of bolts and pressure rating at the equipment nozzle flange provided by an equipment manufacturer.
