A polyvinylidene fluoride (PVDF) Y-type strainer is a corrosion-resistant filtering component used in industrial piping systems to remove solid particles from liquids, gases, or steam. The Y-shaped body houses a perforated or mesh screen to collect debris, protecting downstream equipment like pumps and valves. PVDF is a high-performance thermoplastic known for its excellent chemical and thermal resistance, making it suitable for aggressive media and high-purity applications. 
 

Product specifications

Specific product characteristics, such as size, connections, and screen material, vary by manufacturer. 

The specifications of PVDF Y-type strainers include body material (PVDF), various connection types (flanged, threaded, socket/butt weld, true union), and screen materials like PVDF or 316 stainless steel. Screen mesh sizes typically range from 20 to 100 mesh, with micron ratings from approximately 50 to 2000 microns. Pressure ratings are usually up to 10 bar (145 psi) at 20°C, which decreases with rising temperature. The typical temperature range for these strainers is from -20°C up to +120°C. 
 

Product description

• Material: The body of the strainer is constructed from PVDF, a thermoplastic known for its excellent resistance to aggressive chemicals like acids, bases, solvents, and halogens.
• Design: The "Y" shape of the strainer allows it to be installed in both horizontal and vertical pipelines, with the strainer leg pointing downward to collect filtered solids.
• Union connection: The union connection, often called a "true union," features a nut that compresses a seal between the pipe ends and the strainer body, creating a leak-proof and easy-to-disconnect joint.
• Filter screen: The removable filter screen can be made of PVDF or Stainless Steel (304 or 316), and is available in different mesh sizes for various filtration levels.
• Key features:
  • High chemical resistance for handling corrosive fluids.
  • Thermal stability with a maximum operating temperature typically up to 120°C (280°F), depending on the pressure and specific PVDF grade.
  • Optional transparent housing for visual inspection of the filter screen.
  • Minimal pressure drop for efficient flow. 

Typical applications

PVDF Y-type strainers with union ends are frequently used in demanding industrial applications where corrosion resistance and ease of maintenance are critical. 

• Chemical processing: Handling aggressive chemical fluids.
• Ultrapure water systems: Preventing contamination in high-purity water applications.
• Pharmaceutical and semiconductor manufacturing: Ensuring a clean process medium.
• Wastewater treatment: Filtering out solid particles from wastewater streams.