What is Difference Between FF & RF Flanges?

What is Difference Between FF & RF Flanges?
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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
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When a train is rounding a curve to prevent side thrust on the wheel flanges of cars a.Opposite thrust is created to counter balance this thrust b.Guide rail sections are provided to take care of thrust c.Thrust eliminators are provided in the train d.Outside rails are realised e.Rail section is made thick on curvature

Description : When a train is rounding a curve to prevent side thrust on the wheel flanges of cars a.Opposite thrust is created to counter balance this thrust b.Guide rail sections are provided to take care of ... are provided in the train d.Outside rails are realised e.Rail section is made thick on curvature

Last Answer : d. Outside rails are realised

How can flanges be classified based on pipe attachment?

Description : How can flanges be classified based on pipe attachment?

Last Answer : Flange joint is one of the methods of pipe joints. Piping and flanges are classified in different ways based on pipe attachment, Pressure-Temperature (PT) rating, facing, face finish. Below ... at the socket. Socket welded flanges shall be specified with connection pipe thickness to ensure pro

Different Types of Flanges Used in Piping Applications?

Description : Different Types of Flanges Used in Piping Applications?

Last Answer : Different Types of Flanges Slip on Flanges Weld Neck Flanges Blind Flanges Socket Weld Flanges Lap Joint Flanges Threaded Flanges Orifice Flanges Spectacle Blind Flanges Reducing Flanges Forged Flanges ANSI ... If anyone wants to buy any of these Flanges then Contact us: sales@nufitpiping .com

What is Uses of Flanges in Petrochemical Industries?

Description : What is Uses of Flanges in Petrochemical Industries?

Last Answer : A flange is a mechanism by which tubing, valves, pumps, and other machinery are linked to create a piping structure. It also makes washing, review or alteration easy to access. ... petrochemical entrants has put extreme pressure on the demand for pipe fitters. Ongoing production line projects

Dead mild steel, which contains 0.10 to 0.15 percent carbon is used for making (A) Shafts (B) Flanges (C) Gears (D) Shear blades

Description : Dead mild steel, which contains 0.10 to 0.15 percent carbon is used for making (A) Shafts (B) Flanges (C) Gears (D) Shear blades

Last Answer : (B) Flanges

Glass pipes can be joined by (A) Flanges (B) Welding (C) Soldering (D) Bell and spigot joint

Description : Glass pipes can be joined by (A) Flanges (B) Welding (C) Soldering (D) Bell and spigot joint

Last Answer : (D) Bell and spigot joint

In grillage foundations, distance between flanges of grillage beams, is kept (A) 40 cm (B) Equal to flange width (C) Twice the flange width (D) Maximum of (a), (b) and (c)

Description : In grillage foundations, distance between flanges of grillage beams, is kept (A) 40 cm (B) Equal to flange width (C) Twice the flange width (D) Maximum of (a), (b) and (c)

Last Answer : Answer: Option C

What Is Flange? Types Of Flanges?

Description : What Is Flange? Types Of Flanges?

Last Answer : Flanges used to connect both lines (Fluid, Gas, Oil, Water….)  Thread Type Flange  Modified Flange  Weld Neck Flange  Slip On Flange  Goose Neck Flange  Socket Weld Flange  Stepped Flange  Spade Flange  Spectacle Flange  Blind Flange

This type seed metering mechanism consist of wheel with fine and coarse ribbed flanges. b. fluted feed c. Cup feed d. None of the above

Description : This type seed metering mechanism consist of wheel with fine and coarse ribbed flanges. b. fluted feed c. Cup feed d. None of the above

Last Answer : Ans - a. Internal double run

The thickness of web for unstiffened plate girder with clear distance‘d’ between the flanges shall be not less than

Description : The thickness of web for unstiffened plate girder with clear distance‘d’ between the flanges shall be not less than

Last Answer : d/85

When winding a tape onto a plastic or metal reel, should the tape ever touch the reel’s flanges?

Description : When winding a tape onto a plastic or metal reel, should the tape ever touch the reel’s flanges?

Last Answer : No. The reel is designed to hold the tape on its hub without letting the tape touch the sides of the flanges.

Which of the following is required to be hydrostatically tested per ASME B31.3? a) Flanges. b) Flanged fittings. c) Flanges and flanged fittings. d) There is no hydrostatic testing requirement in ASME B16.5.

Description : Which of the following is required to be hydrostatically tested per ASME B31.3? a) Flanges. b) Flanged fittings. c) Flanges and flanged fittings. d) There is no hydrostatic testing requirement in ASME B16.5.

Last Answer : b) Flanged fittings.

When a raised face flange gasket surface is machined to a flat face surface, does the flange still comply with ASME B31.3? a) No. b) Yes. c) Yes, provided the flange meets thickness requirements for flat faced flanges per ASME B31.3. d) Yes, if approached by the flange committee.

Description : When a raised face flange gasket surface is machined to a flat face surface, does the flange still comply with ASME B31.3? a) No. b) Yes. c) Yes, provided the flange meets thickness requirements for flat faced flanges per ASME B31.3. d) Yes, if approached by the flange committee.

Last Answer : c) Yes, provided the flange meets thickness requirements for flat faced flanges per ASME B31.3.

Which of the following is not recommended by ASME B31.3 when assembling gray cast iron flanges? a) Use high strength bolting at all times. b) Carefully align the flanges. c) Carefully control bolt torque. d) Ensure piping loads transmitted to the flanges are within design conditions.

Description : Which of the following is not recommended by ASME B31.3 when assembling gray cast iron flanges? a) Use high strength bolting at all times. b) Carefully align the flanges. c) Carefully control bolt torque. d) Ensure piping loads transmitted to the flanges are within design conditions.

Last Answer : a) Use high strength bolting at all times.

Plate material is permitted for use in the construction of which of the following? a) Flange hubs. b) Blind Flanges. c) Elbows. d) All of the above.

Description : Plate material is permitted for use in the construction of which of the following? a) Flange hubs. b) Blind Flanges. c) Elbows. d) All of the above.

Last Answer : b) Blind Flanges.

Flanges and flanged fittings may be constructed of which of the following materials? a) Castings. b) Forgings. c) Plate. d) All of the above.

Description : Flanges and flanged fittings may be constructed of which of the following materials? a) Castings. b) Forgings. c) Plate. d) All of the above.

Last Answer : d) All of the above.

When flanges and flanged fittings meet the requirements for multiple materials and are marked for multiple materials and are marked in accordance with ASME B16.5, which of the following pressure rating may be used? e) Any applicable pressure rating. f) The lowest must be used. g) The highest must be used. h) Flanges may only meet one material specification.

Description : When flanges and flanged fittings meet the requirements for multiple materials and are marked for multiple materials and are marked in accordance with ASME B16.5, which of the following pressure rating may be ... . g) The highest must be used. h) Flanges may only meet one material specification.

Last Answer : e) Any applicable pressure rating.

Ratings for welding neck flanges under ASME B16.5 are based upon which of the following? a) The flange thickness and 40,000 psi yield strength. b) The hub thickness at the welding end and 40,000 psi yield strength. c) The weld metal yield strength. d) The piping wall thickness and yield strength.

Description : Ratings for welding neck flanges under ASME B16.5 are based upon which of the following? a) The flange thickness and 40,000 psi yield strength. b) The hub thickness at the welding end and ... psi yield strength. c) The weld metal yield strength. d) The piping wall thickness and yield strength.

Last Answer : b) The hub thickness at the welding end and 40,000 psi yield strength

What must be considered when using flanges at the ratings listed in ASME B16.5 at low temperatures? a) Toughness. b) Shock loadings. c) Sudden changes of stress or temperature. d) All of the above.

Description : What must be considered when using flanges at the ratings listed in ASME B16.5 at low temperatures? a) Toughness. b) Shock loadings. c) Sudden changes of stress or temperature. d) All of the above.

Last Answer : c) Sudden changes of stress or temperature.

Socket welded or threaded flanges are not recommended outside which of the following temperature ranges if severe thermal cycling or gradients are expected? a) -20°-300°F. b) -50°-500°F. c) -50°-750°F. d) -20°-500°F.

Description : Socket welded or threaded flanges are not recommended outside which of the following temperature ranges if severe thermal cycling or gradients are expected? a) -20°-300°F. b) -50°-500°F. c) -50°-750°F. d) -20°-500°F.

Last Answer : b) -50°-500°F.

When flanged fittings are to be used at temperatures below -20°F, what pressure rating is to be used? a) The pressure rating at the actual service temperature, found by interpretation. b) The pressure rating at -20°F. c) The pressure equal to the flange class. d) Flanges complying with ASME B16.5 may not be used below -20°F.

Description : When flanged fittings are to be used at temperatures below -20°F, what pressure rating is to be used? a) The pressure rating at the actual service temperature, found by interpretation. b) The pressure ... to the flange class. d) Flanges complying with ASME B16.5 may not be used below -20°F.

Last Answer : b) The pressure rating at -20°F.

Can a manufacturer or contractor use flanges or fittings made in conformance to an earlier edition ASME B16.5 on a current project? a) No. a) b) Yes. b) Yes, if in conformance with the current edition of ASME B16.5. c) Yes, if permitted by the owner-user.

Description : Can a manufacturer or contractor use flanges or fittings made in conformance to an earlier edition ASME B16.5 on a current project? a) No. a) b) Yes. b) Yes, if in conformance with the current edition of ASME B16.5. c) Yes, if permitted by the owner-user.

Last Answer : b) Yes, if in conformance with the current edition of ASME B16.5.

What size piping flanges and flanged fittings are addressed by ASME B16.5? a) 1/2" to 24" NPS. b) 1" to 36" NPS. c) 1/4" to 36" NPS. d) 1/4 to 48" NPS.

Description : What size piping flanges and flanged fittings are addressed by ASME B16.5? a) 1/2" to 24" NPS. b) 1" to 36" NPS. c) 1/4" to 36" NPS. d) 1/4 to 48" NPS.

Last Answer : a) 1/2" to 24" NPS.

To increase the stability of the lower denture, A. The occlusal plane should be below the tongue B. The occlusal plane should be above the tongue C. The lingual flanges should be concave

Description : To increase the stability of the lower denture, A. The occlusal plane should be below the tongue B. The occlusal plane should be above the tongue C. The lingual flanges should be concave

Last Answer : A. The occlusal plane should be below the tongue

The fovea palatini is a landmark to determine the posterior bonds of upper denture in which regard: A. Post dam B. Flanges

Description : The fovea palatini is a landmark to determine the posterior bonds of upper denture in which regard: A. Post dam B. Flanges

Last Answer : A. Post dam

A bridge having super structure with “Single or duplicate girders with cross sleepers on top flanges” is classified as a) RSJ girder bridge b) Cross Girder c) Deck plate girder* d) Open web girder

Description : A bridge having super structure with “Single or duplicate girders with cross sleepers on top flanges” is classified as a) RSJ girder bridge b) Cross Girder c) Deck plate girder* d) Open web girder

Last Answer : c) Deck plate girder*

The load transferred from rails to bottom flanges is in a) deck type girder b) through type girder* c) semi-through type girder d) plate girder

Description : The load transferred from rails to bottom flanges is in a) deck type girder b) through type girder* c) semi-through type girder d) plate girder

Last Answer : b) through type girder*

Indicate which of the statement is incorrect with regard to coning of Wheels a)coning of wheels help the vehicle to negotiate a curve smoothly b) It helps in smooth riding c) It increases wear and Tear of wheel flanges* d)it enables the outer wheel of vehicle to take a longer distance e) it restricts the swaying of vehicles

Description : Indicate which of the statement is incorrect with regard to coning of Wheels a)coning of wheels help the vehicle to negotiate a curve smoothly b) It helps in smooth riding c) It increases ... enables the outer wheel of vehicle to take a longer distance e) it restricts the swaying of vehicles

Last Answer : c) It increases wear and Tear of wheel flanges*

IE and FF work ONLY with proxy settings, but then Chrome will only work without... Why?

Description : IE and FF work ONLY with proxy settings, but then Chrome will only work without... Why?

Last Answer : answer:On Windows, Google Chrome uses the same proxy settings as Internet Explorer so it doesn't make sense that one works and the other doesn't work. Firefox, on the other hand, uses it's own proxy ... mean by that? It sounds like you a suggesting you malware of some kind with might be your answer.

Shouldn't pgns show up the same in both safari and ff?

Description : Shouldn't pgns show up the same in both safari and ff?

Last Answer : answer:Could be a color profile issue. Gecko uses a different color profile than Webkit. If you post a link I will take a look. That isn’t spam.

What is the 'Recently Taged' in FF mean? What do you use it for?

Description : What is the 'Recently Taged' in FF mean? What do you use it for?

Last Answer : You’re it?

Ratio of FF users from mac to pc?

Description : Ratio of FF users from mac to pc?

Last Answer : PC with firefox here but I use a Mac with firefox at home.

If the roots ff the equation (c2 – ab)x2 – 2(a2 – bc)x + b2 – ac = 0 are equal, then prove that either a = 0 or a3 + b3 + c3 = 3abc -Maths 10th

Description : If the roots ff the equation (c2 – ab)x2 – 2(a2 – bc)x + b2 – ac = 0 are equal, then prove that either a = 0 or a3 + b3 + c3 = 3abc -Maths 10th

Last Answer : (c2 – ab) x2 + 2(bc - a2 ) x+ (b2 – ac) = 0 Comparing with Ax2 + Bx + C = 0 A = (c2 – ab), B = 2(bc - a2 ) and C = b2 – ac According to the question, B2 - 4AC = 0 Put the values in the above equation we get 4a(a3 + b3 + c3 -3abc) = 0 hence, a = 0 or a3 + b3 + c3 = 3ab

What does FF mean ?

Description : What does FF mean ?

Last Answer : FF stands for Freedom Fighter.

What is FF - FF?

Description : What is FF - FF?

Last Answer : That's called the "MAC address" or "Hardware address". It's aunique set of numbers assigned to a network device. Anything thataccess the internet whether phones, wireless cards, computers ... . All devices on the physical segment will see and respondto a message with that destination.

If a frequency of 2.5 kHz were measured at the output of 'FF-C' in the circuit shown in the illustration, what would be the clock frequency? EL-0087 A. 0.8 kHz B. 2.5 kHz C. 7.5 kHz D. 20 kHz

Description : If a frequency of 2.5 kHz were measured at the output of 'FF-C' in the circuit shown in the illustration, what would be the clock frequency? EL-0087 A. 0.8 kHz B. 2.5 kHz C. 7.5 kHz D. 20 kHz

Last Answer : Answer: D

If a frequency of 16.8 kHz were measured at the output of 'FF-C' of the circuit shown in the illustration, the clock frequency would be _____________. EL-0087 A. 8.4 kHz B. 50.4 kHz C. 134.4 kHz D. 1680.0 kHz

Description : If a frequency of 16.8 kHz were measured at the output of 'FF-C' of the circuit shown in the illustration, the clock frequency would be _____________. EL-0087 A. 8.4 kHz B. 50.4 kHz C. 134.4 kHz D. 1680.0 kHz

Last Answer : Answer: C

If the outputs marked 'Q' of 'FF-A', 'FF-B' and 'FF-C' in the circuit shown in the illustration are at logic levels 0, 1, and 1 respectively, what levels are present at the 'NOT Q' outputs? EL-0087 A. 1, 0, and 1 B. 1, 0, and 0 C. 0, 0, and 1 D. 0, 1, and 1

Description : If the outputs marked 'Q' of 'FF-A', 'FF-B' and 'FF-C' in the circuit shown in the illustration are at logic levels 0, 1, and 1 respectively, what levels are present at the 'NOT Q' outputs? EL-0087 A. 1, 0, and 1 B. 1, 0, and 0 C. 0, 0, and 1 D. 0, 1, and 1

Last Answer : Answer: B

If the clock frequency to the circuit shown in the illustration were 100 kHz, what would be indicated at the output of 'FF-C'? EL-0087 A. 10.1 kHz B. 12.5 kHz C. 805 kHz D. 1010 kHz

Description : If the clock frequency to the circuit shown in the illustration were 100 kHz, what would be indicated at the output of 'FF-C'? EL-0087 A. 10.1 kHz B. 12.5 kHz C. 805 kHz D. 1010 kHz

Last Answer : Answer: B

If the clock frequency to the circuit shown in the illustration were 2 kHz, what would be indicated at the output of 'FF-C'? EL-0087 A. 250 Hz B. 666 Hz C. 6 kHz D. 16 kHz

Description : If the clock frequency to the circuit shown in the illustration were 2 kHz, what would be indicated at the output of 'FF-C'? EL-0087 A. 250 Hz B. 666 Hz C. 6 kHz D. 16 kHz

Last Answer : Answer: A

A transmitted signal 5 meters in wavelength is received by an antenna coil having a 50-Ω resistance and a 0.01 H inductance. What is the capacitance of the tuner shunting the antenna coil at this point? A. 0.704 fF B. 0.704 μF C. 0.704 nF D. 0.704 mF

Description : A transmitted signal 5 meters in wavelength is received by an antenna coil having a 50-Ω resistance and a 0.01 H inductance. What is the capacitance of the tuner shunting the antenna coil at this point? A. 0.704 fF B. 0.704 μF C. 0.704 nF D. 0.704 mF

Last Answer : A. 0.704 fF

A first order gaseous phase reaction is catalysed by a non-porous solid. The kinetic rate constant and the external mass transfer co-efficients are k and kg respectively. The effective rate constant (ke ff) is given by (A) ke ff = k + kg (B) ke ff = (k+ kg )/2 (C) ke ff = (kkg ) 1/2 (D) 1/ke ff = 1/k + 1/kg

Description : A first order gaseous phase reaction is catalysed by a non-porous solid. The kinetic rate constant and the external mass transfer co-efficients are k and kg respectively. The effective rate constant (ke ff) is given by (A) ke ff = k + kg ( ... + kg )/2 (C) ke ff = (kkg ) 1/2 (D) 1/ke ff = 1/k + 1/kg

Last Answer : (D) 1/ke ff = 1/k + 1/kg

Which one is faster between NAND-SR FF and NOR-SR FF?

Description : Which one is faster between NAND-SR FF and NOR-SR FF?

Last Answer : Ans-well both deals with same principle.but i think NAND-SR FF is faster than NOR-SR FF

If having tried all normal methods, the ears cannot be cleared in flight, the ff. action should be taken

Description : If having tried all normal methods, the ears cannot be cleared in flight, the ff. action should be taken

Last Answer : seek medical advice as soon as possible

How is the J-K FF affected if PS and CLR are both LOW?

Description : How is the J-K FF affected if PS and CLR are both LOW?

Last Answer : The flip-flop is jammed.

What two inputs to a J-K FF will override the other inputs?

Description : What two inputs to a J-K FF will override the other inputs?

Last Answer : Clear (CLR) and preset (PS or PR).

What logic levels must exist for the FF to be toggled by the clock?

Description : What logic levels must exist for the FF to be toggled by the clock?

Last Answer : Both J and K must be HIGH.

Assume that K goes HIGH and J goes LOW; when will the FF reset?

Description : Assume that K goes HIGH and J goes LOW; when will the FF reset?

Last Answer : When the clock pulse goes LOW.

. What type of FF can be used as an R-S, a T, or a D FF?

Description : . What type of FF can be used as an R-S, a T, or a D FF?

Last Answer : J-K flip-flop.

What condition must occur to have a change in the output of a D FF?

Description : What condition must occur to have a change in the output of a D FF?

Last Answer : A positive-going clock pulse.