Stainless Steel Temporary Conical Strainer – SS304 / SS316 / Duplex 2205 / 2507, 1/2" to 48", ANSI 150–1500LB

Tengs Valve supplies stainless steel temporary conical strainers (start-up filters) in SS304, SS316, SS316L, Duplex 2205 and 2507. The conical strainer is mounted between two flanges (wafer type / sandwich type) and removed after commissioning. It captures weld slag, pipe scale and construction debris before they reach pumps, valves, meters and heat exchangers. Sizes range from 1/2" to 48" (DN15–DN1200). Pressure ratings include ANSI Class 150LB to 1500LB. Perforated hole sizes include 1mm, 2mm, 3mm, 5mm and 10mm. Mesh sizes range from 10 to 400. Duplex 2205 and 2507 are suitable for corrosive media such as seawater and chloride-containing service. Custom design is available on request.

Temporary Conical Strainer Specifications

• Product Type: Temporary Conical Strainer, Start-up Filter
• Size Range: 1/2"–48" (DN15–DN1200)
• Pressure Rating: ANSI Class 150LB, 300LB, 600LB, 900LB, 1500LB
• Screen Material: SS304, SS316, SS316L, Duplex Stainless Steel 2205, 2507
• Perforated Hole Size: 1mm, 2mm, 3mm, 5mm, 10mm or equivalent
• Mesh Material: SS304, SS316, SS316L
• Mesh Size: 10, 20, 40, 60, 80, 100, 200, 400 mesh or equivalent
• Mounting: Between two flanges (Wafer / Sandwich Type)
• Customization: Custom design available

Temporary conical strainers are mounted between two flanges (wafer type / sandwich type) as temporary start-up protection for pipelines and plants.

Features of Inline Temporary Conical Strainer

• Adequate Strength of Elements and Housing – designed to withstand pipeline flushing and pressure testing conditions
• Lower Cost – cost-effective option for one-time commissioning protection
• Less Weight – simple conical design reduces overall weight and installation effort
• Large Filtration Area – gross filtration area is minimum 3 to 5 times the inlet cross-section area, reducing pressure drop and extending cleaning intervals
• Wide Size and Material Coverage – up to 48" and available in SS304, SS316, SS316L, Duplex 2205 and 2507 for different service conditions

Why Choose a Stainless Steel Temporary Conical Strainer?

During pipeline commissioning and first start-up, weld slag, pipe scale, sand and construction debris can travel through the line and damage pumps, valves, meters and heat exchangers. A temporary conical strainer is installed between two flanges to capture these particles before they reach critical equipment. The conical shape provides a larger filtration area than a flat screen, which means lower pressure drop and longer intervals between cleanings. For large pipelines up to 48", the 10mm perforated hole option provides coarse filtration for heavy debris, while finer mesh sizes down to 10 mesh can be used for more demanding commissioning requirements. Duplex 2205 and 2507 offer higher resistance to chloride stress corrosion cracking than standard SS304 or SS316, making them suitable for seawater and offshore applications. After commissioning, the strainer is removed and the pipeline continues with its permanent filtration system.

Applications

• Pipeline commissioning and flushing
• First start-up protection for pumps, valves and meters
• Large diameter pipeline start-up (up to 48")
• Seawater and desalination systems (Duplex 2205 / 2507)
• Oil & gas transmission line start-up
• Power plant commissioning
• Chemical and petrochemical plant start-up
• Cooling water system commissioning

Other sizes, materials, perforated hole sizes and mesh sizes are available on request. For more information on stainless steel temporary conical strainers, please contact us.