Temporary Strainers have many names. Some examples are conical strainer, cone strainer, witches hat strainer, plate type strainers, and temporary basket strainers.
First, temporary strainers are generally used at the startup of pipelines to filter larger debris and foreign objects that may be present during construction and startup. Furthermore, temporary strainers may be conical or truncated. Hence, flow and media determine the direction of the strainer. In addition, piping systems usually need industrial strainers.
In brief, temporary strainers are mostly used for the start-up of new or revamped piping systems. Therefore, temporary strainers will prevent construction debris from causing damage to downstream equipment. Also, the screen cone is welded around the entire circumference of the flange ring. Thus provides strength and prevents unwanted bypass.
Size: Range in sizes from 1/4” to 60” nominal pipe size as standard.
Open Area: Range in an open area of strainer to the cross-section area of the pipe from 100% to 300% as standard.
Material Thickness: Gauge of strainer material ranges between 22 to 11 depending on hole size.
Temporary Basket Type Strainers
Perforated Plate – Perforated plate is the most used media for basket type strainers and is available in perforation sizes 1/32″ to 1/2″ diameter depending on the degree of straining required and size and type of basket. Perforations are normally made on a staggered pattern for maximum open area and strength.
Perforation: Perforation hole sizes range from 1/16” to 1/4” as standard.
Type of Material: Materials include carbon steel, various grades of stainless steel, and alloys.
Flange/Facings: Temporary strainer support rings can be made to work with standard flanges. For example, raised face flanges and ring-type joint flanges.
Welding: Resistance welding, TIG, and Oxyacetylene.
Liners/Covers: Available for small particle removal 200 through 10 mesh carbon steel; stainless steel, etc.
Straight Flow – Mesh on inside.
Reverse Flow – Mesh on the outside.
Cone Type Strainer
Example: Include full description.
4” Temporary Cone Strainer, Stainless Steel, ASME Class 150, 150% Open Area and 1/8” Perf. Screen.
In general, when ordering, specify:
- Temporary Strainer Size.
- First and foremost, pipe size.
- Then pressure rating/flange rating.
- Next perforation or mesh size.
- Also material.
- As well as style – Cone, Basket, etc.
- In addition to the direction of flow – straight or reverse.
- Lastly, the percentage of open area or length.
Plate Type Strainer
Plate-type strainers involve a flat plane of mesh that stretches perpendicular to the system’s flow.
To begin with, conical strainers are in the shape of a cone. Hence why they are called cone strainers. A conical temporary strainer is a perforated device of perforated or woven mesh to catch particles in a pipeline. Furthermore, Dannenbaum LLC can help with temporary conical strainers.
However, these are usually temporary and put in pipelines to protect equipment from debris and particles. Also, conical temporary strainers are shaped like a cone or witch’s hat.
Moreover, a conical temporary strainer can catch particles down to .001 inches in diameter. In addition, cone strainers have little pressure drop and can be removed after startup, and the debris is evacuated.
And the sizing of Conical strainers is important to ensure the strainer screen can block particles that could damage equipment.
Finally, most industrial strainers suppliers will recommend that all new piping systems have temporary strainers. These are removable strainers with a large mesh installed at the beginning of a new pipeline. This is to help the pipeline from startup.
Removing dirt and other impurities during production is important. Therefore, the strainer is very important for the natural gas and oil filtering process. The strainers used in this industry are mainly made of materials such as copper and aluminum because they are resistant to corrosion. A strainer in the piping system means a cleaner product, protection of equipment, and simple separation of solids from liquids.
The temporary strainer is designed to remove seeable items from what is being produced. Small liquid waste can pass through. When the amount of material to be removed from the stream is relatively small, you can use a filter. The filter is cleaned manually by turning off the drain and removing the filter cap.
By installing a strainer, a marked improvement in chemical operation and a guarantee of a longer equipment life are possible. Industrial and municipal water strainers remove impurities from lakes, rivers, and wells that can damage or clog equipment. They also remove leaves, insects, feathers, etc. From the cooling tower water where the system is open to the atmosphere. They remove unwanted material from the water for desalination equipment before it is treated to remove the salt. A strainer is a device for mechanically removing unwanted solids from a liquid, gas, or vapor conduit through perforated strain elements or wire mesh.
Temporary Basket Strainers
The temporary basket strainer can remove unwanted material from a piping system.
Clumps of debris can damage expensive products. However, this can be avoided when using the temporary type strainer.
Temporary basket strainers can be essential in dealing with seawater. For smaller type lines, filters are used for cooling lines, fire control lines, sanitation lines, and general cleaning lines. Filters also clean the fuel, hydraulic, and lubrication systems.
Cooling towers and boilers often use conical strainers in the piping system.
Witches Hat Strainers
Conical Strainers are used in many applications to protect downstream process system components in many industries—for example, chemical processing, petroleum, power generation, and marine and water treatment.
Conical Strainers are often used in LNG on startups.
If a conical Strainer is used in a steam system, large amounts of condensate may form. As a result, steam traps can be installed to remove condensate. The second filter is placed parallel to the primary filter, and you can deflect flow through the two filters.
This makes cleaning the filter unit easier while the system is still operating, reducing downtime for maintenance. The large Strainer surface offers a long service life along with minimum pressure drop. The flow coming from the inside to the outside provides maximum strength.
A standard conical strainer is used as a start-up. They protect pump valves and control systems. In a continuous production process, they serve to ensure long-lasting plant protection. The Conical Strainer is a highly cost-effective solution.
You must install strainers upstream of each steam trap, flow meter, and control valve. The Temporary Strainer is designed in the form of a conical filter. Temporary Strainers are used in start-up applications.
By installing pipeline temporary strainer in front of expensive process equipment, they protect against damage from scale, dirt, or by-products, preventing costly downtime. Pipe strainers keep the flow meter and spray nozzle from clogging.
A temporary strainer is designed to capture solid particles and other materials through the system. Conical strainers can help stop damage to the piping system.
Fabricated Temporary Strainers
We officer fabricated temporary pipeline strainers in cone or witches hat strainers, basket, or plate strainers. Fabricated temporary strainers are designed for initial start-up. They should not be used as a permanent straining solution in place of y-strainers, basket strainers, tee strainers, or duplex basket strainers.
Temporary witches hat and temporary basket strainers and plate type strainers are solid to help during start-up. Temporary cone or temporary basket strainers can be fabricated to any length in many different types of metals. Standard lengths are 100% or 150%. This refers to the open area of the cone or basket to the cross-section of the inlet pipe.
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