Plumbing flanges

What is a plumbing flange?

A flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system. It also provides easy access for cleaning, inspection or modification. Flanges are usually welded or screwed. Flanged joints are made by bolting together two flanges with a gasket between them to provide a seal.

What are different types of flanges?

Types of Flanges Welding Neck flange . Welding Neck Flanges are easy to recognize at the long tapered hub, that goes gradually over to the wall thickness from a pipe or fitting. Slip On flange . Socket Weld flange . Lap Joint flange . Stub End. Threaded flange . Blind flange .

How do I choose piping flange?

Guidelines for Selection of Various Types of Flanges Pressure Temperature Rating of Flanges . Flange Dimensional Standards. Flange Facings. The bore of Welding Neck Flanges and Hub Design. Flange Material Limitations. Iron Flanges . Carbon Steel Flanges . Low and Intermediate Alloy Steel Flanges .

How many types of pipe flanges are there?

The key types of flanges are the welding neck, long welding neck, slip-on, socket weld, lap joint, threaded and blind flanges . In addition to these standard flanges , some special ones exist, called Weldoflange/Nipoflange and Elboflange, swivel flange , expander/reducer flange , and orifice flanges .

What is a floor flange?

A floor flange is a term that describes a fitting used in construction and plumbing industries to secure decorative, structural, and sanitary fixtures. Floor flanges are locked into place on wood or concrete floors .

What is asa150 flange?

ASA flanges , adapted decades ago from 150 # steam-pipe flanges , are simple, sexed vacuum seals—one flange is grooved to accept an o-ring (Figure 1) while the mating flange is smooth. They are made from 304L stainless or a weldable aluminum alloy. These flanges are sized by the connecting pipe’s nominal I.D. in inches.

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How do I know what flange I have?

7 Factors Used To Identify A Flange Types . It’s pretty easy to identify the type of flange by how it looks. Size. The size of a flange is comprised of factors that include the standard used (ANSI/DIN/JIS), pressure class needed, and the actual measurements of a flange . Thickness. Bolt Holes. Standards. Pressure Class. Materials.

What is difference between Series A and B flanges?

Series A flange is heavier, thicker and cost more whereas series B flange has more bolt holes and is lighter cheaper than series A. API605 flange and series B flanges are same thing.

What is FF and RF flange?

The flange face is the surface area that hosts the gasket. The 6 available types of flange face are flat ( FF ), raised ( RF ), ring joint (RTJ), lap joint, male and female (M&F), tongue and groove (T&G). RF and FF flanges may have different types of “finish” (i.e. roughness on top the surface): smooth, stock and serrated.

What is the difference between blank flange and blind flange?

A blind flange dead ends the tubing flow; a blank flange is one that is to be machined to a finished product. A blind flange is a solid flange as shown below. The purpose of these is to block off a section of pipe or a nozzle on a vessel that is not used.

What is the difference between lap joint flange and slip on flange?

lap joint flanges are very similar to a slip-on flange , with the main difference being that it has a curved radius at the bore and face to house a lap joint stub-end. The back or outside of the flange is also welded with a fillet weld. A variation of the Slip-On flange also exists. This is the Slip -On Reducing Flange .

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What is a quick flange?

Quickflange ® technology provides high performance weldless, flange to pipe connections. The patented technology is a permanent solution for improving pipeline integrity and flow assurance. Quickflange ®, allows for “cold work” pipe modification with a vast range of size and pressure ratings for most applications.

What does RTJ flange mean?

Ring-Type Joint

What is the meaning of flanges?

1 : a rib or rim for strength, for guiding, or for attachment to another object a flange on a pipe a flange on a wheel. 2 : a projecting edge of cloth used for decoration on clothing a jacket with flange shoulders. flange . verb. flanged ; flanging.

What is flange coupling?

noun. engineering a driving coupling between rotating shafts that consists of flanges (or half couplings ) one of which is fixed at the end of each shaft, the two flanges being bolted together with a ring of bolts to complete the drive.