What is a Van Stone style flange?
Flange x Socket (Van Stone Style) is used for joining pipes or connecting valves in a piping system. It allows you to transition from a flanged fitting to a male fitting or tubing. The bolt ring on the flange rotates separately from the hub allowing for easier bolt alignment during installation.
What are flanges and its type?
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What are flanges used for?
Flanges are used to connect many equipment such as valves, pipes, pumps etc, to make a pipework system, Generally flanges are threaded or welded, flanges are connected together by bolting them with gaskets to provide a seal that provides easy access to the piping system.
What is a tank shell flange?
It is the formed radius of the head which transitions the dish portion of the head to the straight flange. The straight flange refers to the straight potion of the head measured from the tangent line to the edge of the head.
What is a Vanstone flange used for?
They are often called Back Up, Loose Ring or Van Stone Flanges. These flanges are used behind and in conjunction with a Stub End. The lap joint flange floats on the pipe which allows allows for easy bolting. Lap joint flanges are used predominately with mixed materials, on expansion joints and lined piping systems.
What is a PVC Vanstone flange?
A PVC Pressure Van Stone Flange is a two-piece flange with a rotating ring that makes bolt alignment simple. Suitable for pressure applications. Fitting Size.
How do you install a Vanstone flange?
Field Installation of Vanstone FlangesSlip flange over Spiral ductwork allowing duct to extend 1/2″ beyond the face of the flange. ... Peen 4 tabs about 1″ wide and 90° apart, working from the inside of the flange. ... Rotate duct 45° and peen 4 more tabs about 1″ wide and 90° apart. ... Peen remaining edge of duct over flange.
What is the difference between lap joint flange and slip-on flange?
Lap joint flanges are extremely similar to slip-on flanges, with the primary difference being that the bore and face have a curved radius to accommodate a lap joint stub-end. Lap joint flanges and stub-end assemblies are commonly employed in circumstances where regular disassembly for inspection is necessary.
How do you connect PVC to flange?
0:052:38Spears® Flange Cut-In Kit Installation - YouTubeYouTubeStart of suggested clipEnd of suggested clipOnce primed apply thick and even coat a solvent cement. Apply solvent cement to both pipe and hub.MoreOnce primed apply thick and even coat a solvent cement. Apply solvent cement to both pipe and hub. Using multiple coats if necessary. Work quickly and place both halves around pipe evenly.
What is slip on flange?
Slip on Flange is essentially a ring that is placed over the pipe end, with the flange face extending from the end of the pipe by enough distance to apply a weld bead on the inside diameter. The OD of slip on flange is also welded on the back side of the flange.
What is Van Stone?
The process of manufacturing a PTFE lined pipe spool with both flanges rotating without the use of conventionally welded or screw threaded collars is known as the “Conrac” or more properly the “Van Stone” system.
Are Van Stone flanges raised face?
One note of caution – the van stone surface creates a raised face and is a sheet metal surface (no serrated surface) so gasket accordingly.
What is blind flange?
The blind flange is basically a flange that does not have a hub or a bored center. Blind flanges have the face thickness of a flange, a matching face type, and similar bolting pattern. Blind flanges can also be used to seal a nozzle opening on a pressure vessel.
Where do you put a lap joint flange?
A lap-joint flange is a two-component assembly, with a stub end that has a lap-joint ring flange placed over it. The stub end is then butt welded to the pipe, and the flange ring can be rotated to align with the mating flange. This type of flange connection is particularly useful for large or hard-to-adjust flanges.
What are the two main types of flanges available?
We usually consider two main families of flanges, the standard flanges and the special ones.
Is a lap joint flange raised face?
On a Lap Joint, the flange slides over the pipe and the stub end is the connection where the gasket sits. The end where the gasket sits is the same outside diameter as the face of a raised face flange....Lap Joint Flange Datasheets.ClassFlat FaceANSI 2500Lap Joint, ANSI Class 2500 (in)6 more rows•Jan 10, 2016
What is a 150 flange?
Also known as Class 150 flanges, these flanges have thick, strong walls to handle heavy duty industrial plumbing and water supply applications, such as water processing, waste water treatment, and irrigation. They meet NSF/ANSI Standard 61 for drinking water.
What is a rotating flange?
Rotating flanges are also known as Van Stone flanges; they swivel for easy bolt hole alignment.
How to prevent leaks in threaded connections?
To prevent leaks in threaded connections, apply a sealant to the male threads. For plastic threads, apply a non- hardening, plastic-compatible sealant. Tape or sealants with PTFE are not recommended for plastic-to-plastic connections.
Can you use plastic pipe flanges with compressed air?
Warning: Never use plastic pipe flanges and pipe with compressed air or gas. Sealants cannot be sold to the listed regions due to local VOC (Volatile Organic Compounds) regulations. For technical drawings and 3-D models, click on a part number.
What is a lap joint flange?
Lap joint flanges are one such flange type popular in both piping and duct system design. But as with all flanges and piping system components, understanding both how the component functions and how various design differences will impact performance are essential to safe, reliable operation and optimal cost-effectiveness.
What finishes can help to increase gasket adherence?
For example, serrated or phonograph finishes can help to increase gasket adherence.
Can slip on flanges be used for high pressure?
While many Lap Joint flanges will accommodate greater pressure levels than Slip-On flanges, they’re still not suited for high-pressure applications. If you are unsure, always consult with an engineer before purchasing flanges for use with your piping systems.
Is a rolled angle ring registered?
It is important to note that Rolled Angle Rings are not registered fittings.
What size spools are available for Van Stone?
Van Stone spools are available in sizes up to 8 inch nominal bore. This is a machine size limitation rather than a process suitability issue.
What is the name of the company that makes the flanging system?
The “Conrac Corporation of California”.
What type of spools are used for PTFE lined pipe?
From the very early days of PTFE lined pipe systems the use of Van Stone flanged pipe spools was adopted as the preferred method of flanging and remains the favoured choice of most international lined pipe manufacturers and users alike.
