Temporary Strainer
Economical Protection for Pumps & Nozzles
Temporary Strainer Removes Solid Particles in Pipeline Start-Up Applications
Temporary strainer also known as temporary flat plate strainer (some temporary filters are conical in shape, much like witches’ trade, so they are also called witches hat filters or witches hat style filters), a cone strainer made of perforated mesh or precision woven mesh, includes a range of options for filter materials such as perforated plates, composite sintered multi-layer screens, precision woven wire meshes, and more, including our high-quality Stainless Steel Filter Cartridges. It can effectively trap and intercept small particles or mechanical impurities, providing effective protection for expensive pumps or nozzles.
Compared to conventional inline Y-type or basket filters, Temporary strainers offer a more economical option in liquid applications. When the flow of liquid is interrupted due to the accumulation of particles or sediment over an extended period of time, the temporary cone strainer between the flanges can be disassembled on-site for cleaning or replacement, ensuring the system quickly returns to its optimal operational state.
Category
The available configuration options for filter materials include perforated plates, composite sintered multi-layer screens, precision woven wire meshes, and more. For temporary strainers intended for specialized applications, we employ advanced etched screen technology to manufacture conical screens with varying structures. These can be tailored based on the flow direction, allowing for the addition of metal wire meshes on the interior or exterior as needed.
According to different customer application requirements, these temporary strainers offer a choice of perforated plates, woven mesh, or sintered mesh as the filtration media.

Woven Mesh Cone Mesh Filter

Perforated Metal Cone Filter

Sintered Mesh Composite Cone Strainer

Perforated Plate Composite Cone Strainer
Specification
Material: SS304, SS316, carbon steel and other alloys
Standard perforation: using 1/8″ perforations on 3/16″ center
Standard wire mesh liner: 10 mesh, 20 mesh, 30 mesh, 40 mesh, 60 mesh, 80 mesh, 100 mesh
Handle size: 4″ length × 1″ width
Flange thickness: 11 gauge
End connection: water flat-faced, raised-face, ring joint flanges
Open area: the available range in the open area of the strainer to the cross-section of the pipe is 100% to 300%
Temporary Cone Strainer
It is the most common type of temporary strainer. It is typically installed with the cone pointing upstream, and debris will tend to be collected at the strainer’s paddle ring. This flow direction is more suitable for higher flow rates. If the cone points downstream, the debris will start to be collected in the center. Temporary cone strainer with a wire mesh liner can catch fine particles, and the wire mesh is always placed towards the upstream; therefore, when ordering cone strainers, the expected flow direction must be specified.
Table 1: Specifications of Temporary Cone Strainers
| Model | Nominal Pipe Size | I.D. (inch) | 150/300# ANSI (O.D.) | 600#ANSI (O.D.) | 900#ANSI (O.D.) | 1500#ANSI (O.D.) | Standard Length (L) | L-150% | L-200% |
|---|---|---|---|---|---|---|---|---|---|
| HJ-TCS-01 | 0.75 | 0.625 | 2.125 | 2.5 | 2.625 | 2.625 | 2.25 | 2.25 | 3 |
| HJ-TCS-02 | 1 | 0.75 | 2.5 | 2.75 | 3 | 3 | 2.625 | 2.75 | 3 |
| HJ-TCS-03 | 1.5 | 1.25 | 3.25 | 3.625 | 3.75 | 3.75 | 3.1875 | 4 | 5 |
| HJ-TCS-04 | 2 | 1.75 | 4 | 4.25 | 5.5 | 5.5 | 3.5 | 6 | 8 |
| HJ-TCS-05 | 2.5 | 2.25 | 4.75 | 5 | 6 .375 | 6.375 | 4.0625 | 6.25 | 8 |
| HJ-TCS-06 | 3 | 2.75 | 5.25 | 5.75 | 6.5 | 6.75 | 4.25 | 6.75 | 9 |
| HJ-TCS-07 | 4 | 3.75 | 6.75 | 7 .5 | 8 | 8.125 | 5 | 10 | 12 |
| HJ-TCS-08 | 5 | 4.625 | 7.625 | 9.375 | 9.625 | 9.875 | 6 | 12 | 14 |
| HJ-TCS-09 | 6 | 5.375 | 8.625 | 10.375 | 11.25 | 11 | 7 | 13 | 18 |
| HJ-TCS-10 | 8 | 7.375 | 10.875 | 12.5 | 14 | 13.75 | 8.1875 | 17 | 23 |
| HJ-TCS-11 | 10 | 9.375 | 13.25 | 15.625 | 17 | 17 | 12 | 22 | 28 |
| HJ-TCS-12 | 12 | 11 | 16 | 17.875 | 19.5 | 20.375 | 13 | 26 | 34 |
| HJ-TCS-13 | 14 | 12.25 | 17.625 | 19 | 20.375 | 22.625 | 15 | 27 | 36 |
| HJ-TCS-14 | 16 | 14 | 20.125 | 21.875 | 22.5 | – | 17 | 30 | 40 |
| HJ-TCS-15 | 18 | 15.75 | 21.25 | 23.75 | 25 | – | 19 | 35 | 46 |
| HJ-TCS-16 | 20 | 17.5 | 23.5 | 26.625 | – | – | 21 | 39 | 51 |
| HJ-TCS-17 | 24 | 21.25 | 27.875 | 30.875 | – | – | 25 | 45 | 61 |
Temporary Basket Strainer
It is generally installed towards the down stream and debris will be collected at the flat part. Temporary basket strainer has a larger volume and a larger surface area than temporary cone strainer, so it has a slight higher pressure drop. If the wire mesh liner is placed outside the strainer, the strainer shall be installed towards the upstream.
Table 2: Specifications of Temporary Basket Strainers
| Model | Nominal Pipe Size | I.D. (inch) | 150/300 #ANS (O.D.) | 600#ANSI (O.D.) | 900#ANSI (O.D.) | 1500#ANSI (O.D.) | D | Standard Length (L) | L-150% | L-200% |
|---|---|---|---|---|---|---|---|---|---|---|
| HJ-TBS-01 | 0.75 | 0.625 | 2.125 | 2.5 | 2.625 | 2.625 | 0.375 | 2 | – | – |
| HJ-TBS-02 | 1 | 0.75 | 2.5 | 2.75 | 3 | 3 | 0.5 | 2 | – | – |
| HJ-TBS-03 | 1.5 | 1.25 | 3.25 | 3.625 | 3 .75 | 3.75 | 0.75 | 2.75 | – | 3 |
| HJ-TBS-04 | 2 | 1.75 | 4 | 4.25 | 5 .5 | 5.5 | 1 | 3 | – | 4 |
| HJ-TBS-05 | 2.5 | 2.25 | 4.75 | 5 | 6.375 | 6.375 | 1.25 | 3.1875 | – | 4.5 |
| HJ-TBS-06 | 3 | 2.75 | 5.25 | 5.75 | 6.5 | 6.75 | 1.5 | 3.5 | 3.875 | 5.5 |
| HJ-TBS-07 | 4 | 3.75 | 6.75 | 7.5 | 8 | 8.125 | 2 | 4 | 5 | 7 |
| HJ-TBS-08 | 5 | 4.625 | 7.625 | 9.375 | 9.625 | 9.875 | 2.5 | 5 | 6.375 | 9 |
| HJ-TBS-09 | 6 | 5.375 | 8.625 | 10.375 | 11.25 | 11 | 3 | 6 | 7.75 | 11 |
| HJ-TBS-10 | 8 | 7.375 | 10.875 | 12.5 | 14 | 13.75 | 4 | 6.125 | 9.75 | 14 |
| HJ-TBS-11 | 10 | 9.375 | 13.25 | 15.625 | 17 | 17 | 5 | 7 .5 | 12.375 | 18 |
| HJ-TBS-12 | 12 | 11 | 16 | 17.875 | 19.5 | 20.375 | 6 | 9 | 14.75 | 20 |
| HJ-TBS-13 | 14 | 12.25 | 17.375 | 19 | 20.375 | 22.625 | 7 | 10 | 15.875 | 21 |
| HJ-TBS-14 | 16 | 14 | 20.125 | 21.875 | 22.5 | – | 8 | 10 | 18.375 | 23 |
| HJ-TBS-15 | 18 | 15.75 | 21.25 | 23.75 | 25 | – | 9 | 12 | 20.875 | 27 |
| HJ-TBS-16 | 20 | 17.5 | 23 .5 | 26.625 | – | – | 10 | 14 | 23.5 | 31 |
| HJ-TBS-17 | 24 | 21.25 | 27 .875 | 30.875 | – | – | 12 | 16 | 28.375 | 37 |
| Notes: the above dimensions are based on using 1/8" perforations on 3/16" centers. | ||||||||||
Features
- Ensure high flow rate filtration
- Corrosion & rust resistance
- High temperature resistance
- Suitable for pipeline start-up applications
- Simple structure, easy to install and remove
- Reusable, low costs