Temporary Basket Strainer - Hat Type, ANSI Class 150-1500, 3/4 inch to 36 inch
Tengs Valve supplies high-quality Temporary Basket Strainers, one of the temporary strainer series, also called Temporary Hat Type Strainer or Flat Bottom Temporary Strainer. The basket-shaped screen with ring flange is fabricated from stainless steel and special materials, designed to be mounted between two flanges during system startup, commissioning or maintenance. Main sizes range from 3/4 inch to 36 inch (DN20 to DN900), with pressure rating ANSI Class 150LBS to 1500LBS. Main materials include 304SS, 316SS, 304LSS, 316LSS, duplex stainless steel (DSS) and Monel. Special dimensions are available on request. The basket type provides the largest filtration area among temporary strainers, suitable for high dirt load and system flushing service. Open area of screen can be specified as 100%, 150%, 200% or 300% for different dirt load conditions.
Temporary Basket Strainer Specifications
• Strainer Type: Temporary Basket Strainer, Temporary Hat Type Strainer, Flat Bottom Temporary Strainer
• Main Size: 3/4 inch to 36 inch (DN20 to DN900)
• Pressure Rating: ANSI 150LBS to 1500LBS
• Flange Standard: ASME B16.5 (under 24 inch), ASME B16.47 (above 24 inch), DIN EN 1092-1
• Main Materials: 304SS, 316SS, 304LSS, 316LSS, Duplex Stainless Steel (DSS), Monel etc.
• Mesh Material: SS304, SS316, SS316L, DSS
• Perforated Hole Size and Mesh Size: Please specify
• Open Area of Screen: 100%, 150%, 200%, 300%
• Installation Direction: Flat bottom must be installed against the flow direction
• Design and Manufacture: ASME B16.34
• Inspection and Test: API 598
• Others: On request
✓ Temporary basket strainer is the standard hat type temporary strainer for high dirt load and system flushing service, providing the largest filtration area among temporary strainers
Temporary Basket Strainer Standards
1. Design and Manufacture: ASME B16.34
2. Inspection and Test: API 598
3. Flange End Dimension: ASME B16.5 (under 24 inch), ASME B16.47 (above 24 inch), DIN EN 1092-1
4. Pressure-Temperature Ratings: ASME B16.34
Open Area of Screen Selection: 100% / 150% / 200% / 300%
| Open Area | Basket Length (H) | Filtration Capacity | Typical Application |
|---|---|---|---|
| 100% | Shortest | Standard | Standard start-up service, low dirt load, low pressure drop requirement |
| 150% | Medium | Higher | General commissioning, moderate dirt load |
| 200% | Longer | High | High dirt load, system flushing, extended service between cleanings |
| 300% | Longest | Very High | Very high dirt load, heavy flushing, longest service between cleanings |
Reference: ASME B16.34, API 598. The open area of the basket screen determines the filtration capacity and pressure drop. 100% open area provides the standard filtration capacity; 200% and 300% open area are selected for high dirt load and extended service. A larger open area requires a longer basket (H dimension). Please specify the open area when requesting a quotation.
Temporary Basket Strainer Structure Drawing
Dimensions for Temporary Basket Strainer
| NPS | B Inside Dia (mm) | A (Outside Diameter) Class 150-1500 (mm) | - | H (Hat Type Strainer Length) mm | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 150# | 300# | 600# | 900# | 1500# | Open Area of Screen | ||||||
| 100% | 150% | 200% | 300% | ||||||||
| 3/4 | 16 | 54 | 64 | 64 | 67 | 67 | - | 38 | 51 | 76 | 102 |
| 1 | 19 | 64 | 70 | 70 | 76 | 76 | - | 38 | 51 | 76 | 102 |
| 1-1/2 | 32 | 83 | 92 | 92 | 95 | 95 | - | 51 | 64 | 89 | 127 |
| 2 | 44 | 102 | 108 | 108 | 140 | 140 | - | 64 | 76 | 102 | 152 |
| 2-1/2 | 57 | 121 | 127 | 127 | 162 | 162 | - | 64 | 76 | 114 | 152 |
| 3 | 70 | 133 | 146 | 146 | 165 | 171 | - | 76 | 114 | 152 | 203 |
| 4 | 95 | 171 | 178 | 183 | 203 | 206 | - | 102 | 127 | 178 | 279 |
| 5 | 117 | 194 | 210 | 238 | 244 | 251 | - | 114 | 178 | 229 | 356 |
| 6 | 140 | 219 | 248 | 264 | 286 | 279 | - | 140 | 203 | 279 | 432 |
| 8 | 187 | 276 | 305 | 318 | 356 | 349 | - | 178 | 279 | 356 | 533 |
| 10 | 238 | 337 | 359 | 397 | 432 | 432 | - | 203 | 330 | 432 | 660 |
| 12 | 279 | 406 | 419 | 454 | 495 | 518 | - | 254 | 381 | 508 | 787 |
| 14 | 311 | 441 | 479 | 483 | 518 | 575 | - | 254 | 406 | 559 | 838 |
| 16 | 356 | 511 | 533 | 556 | 572 | 638 | - | 305 | 483 | 610 | 940 |
| 18 | 400 | 540 | 587 | 603 | 635 | 702 | - | 356 | 533 | 686 | 1041 |
| 20 | 445 | 597 | 648 | 676 | 695 | 752 | - | 406 | 610 | 787 | 1219 |
| 24 | 540 | 708 | 768 | 784 | 835 | 899 | - | 457 | 711 | 940 | 1448 |
| 30 | 692 | 873 | 943 | 962 | 1013 | - | - | 559 | 864 | 1168 | 1803 |
| 36 | 838 | 1038 | 1108 | 1121 | 1191 | - | - | 686 | 1067 | 1473 | 2159 |
Reference: ASME B16.5, ASME B16.47, ASME B16.34. Dimensions in mm. B = inside diameter; A = outside diameter (Class 150#-1500#); H = hat type strainer length for 100%/150%/200%/300% open area. For 30 inch and 36 inch, Class 1500# is not available. Contact us for confirmed drawing.
Temporary Basket Strainer Applications
• System startup and commissioning: temporary protection of pumps, valves and heat exchangers during initial system operation and pipeline flushing.
• Oil refinery and petrochemical: pipeline flushing and commissioning in refineries and petrochemical plants, removing weld slag, rust and debris.
• Power plant: temporary filtration in feedwater, condensate, cooling water and steam systems during plant startup and maintenance.
• Water treatment: commissioning of municipal water networks, pumping stations and treatment plants with temporary basket strainer installation.
• Chemical processing: temporary filtration of corrosive media during system flushing, with SS316(L), duplex or Monel construction.
• HVAC and marine: temporary protection in HVAC systems and marine pipelines during construction and commissioning.
FAQ - Temporary Basket Strainer
Q1: What is a Temporary Basket Strainer?
A: A Temporary Basket Strainer (also called Temporary Hat Type Strainer or Flat Bottom Temporary Strainer) is a temporary filtration device with a basket-shaped screen and ring flange, mounted between two flanges in the pipeline during system startup, commissioning or maintenance. The flat bottom must be installed against the flow direction. It protects pumps, valves, meters and other critical equipment from debris such as weld slag, rust, scale and foreign materials. The basket type provides the largest filtration area among temporary strainers, making it ideal for high dirt load and system flushing service.
Q2: What is the Open Area of Screen and how do I select it?
A: The Open Area of Screen refers to the ratio of the open area to the pipe cross-sectional area, expressed as a percentage. Standard options are 100%, 150%, 200% and 300%. 100% open area provides the standard filtration capacity with the shortest basket length (H) and lowest pressure drop; it is suitable for general start-up service. 200% and 300% open areas provide higher filtration capacity for high dirt load and extended service, but require a longer basket length (H). Please specify the open area when requesting a quotation. The H dimension in the dimension table corresponds to each open area percentage.
Q3: What materials are available for Temporary Basket Strainer?
A: Main materials include 304SS, 316SS, 304LSS, 316LSS, duplex stainless steel (DSS) and Monel. SS304 is the standard and most economical choice for general water, HVAC and non-chloride service; SS316(L) is selected for chloride-containing and corrosive media; duplex 2205 / 2507 are used for seawater, desalination and offshore service; Monel is selected for hydrofluoric acid and other special corrosive media. Perforated hole size and mesh size are tailor-made to customer requirements. Please specify the material when requesting a quotation.
Q4: What is the size range and pressure rating available?
A: Temporary basket strainers are available from 3/4 inch to 36 inch (DN20 to DN900). Pressure ratings include ANSI Class 150LBS, 300LBS, 600LBS, 900LBS and 1500LBS. Flange standards include ASME B16.5 (under 24 inch), ASME B16.47 (above 24 inch) and DIN EN 1092-1. For 30 inch and 36 inch, Class 1500# is not available. The temporary basket strainer is mounted between two standard flanges in the pipeline, and its ring flange dimension matches the mating flange standard. Special dimensions are available on request.
Q5: How is the Temporary Basket Strainer installed?
A: The temporary basket strainer is installed between two flanges in the pipeline. The ring flange is sandwiched between the two mating flanges, and the bolts are tightened to compress the gasket and secure the strainer. The most important installation requirement is that the flat bottom must point against the flow direction, so that the flowing medium enters the inside of the basket and the debris is captured inside. If installed in the wrong direction, the basket may collapse under differential pressure. Installation is quick and does not require welding or special tools. After system flushing or commissioning is complete, the temporary basket strainer is removed by loosening the flange bolts.
Q6: What is the difference between Temporary Basket Strainer and other temporary strainer types?
A: Temporary Basket Strainer has a basket-shaped screen with ring flange, providing the largest filtration area for high dirt load and system flushing service. Temporary Conical Strainer has a cone-shaped screen with ring flange, suitable for general start-up service with medium filtration area. Temporary Plate Strainer has a flat perforated plate with ring flange, offering the lowest cost and lowest pressure drop for temporary protection in horizontal pipeline. All three types are available from 3/4 inch to 36 inch. Please refer to our Temporary Conical Strainer and Temporary Plate Strainer pages for more information.
Request a Quote for Temporary Basket Strainer
Send us your size (3/4 to 36 inch or DN20 to DN900), pressure rating (Class 150LBS to 1500LBS), body material (304SS / 316SS / 304LSS / 316LSS / Duplex / Monel), open area of screen (100% / 150% / 200% / 300%), perforated hole size or mesh size, and quantity. Our team will reply within 24 hours with price, drawing, and delivery time.
Email: sales@tengsvalve.com
Website: Request a Quote Online
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Temporary Strainer Dimensions Details
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