PVDF (Polyvinylidene Fluoride): Chosen for its excellent chemical resistance (especially to halogens, acids, bases, and solvents), high purity, good mechanical strength, UV resistance, and relatively high-temperature capability compared to other thermoplastics.
Type:
Y-Type Strainer: Designed for inline mechanical removal of unwanted solids from liquid, gas, or steam lines via a filtration element (screen) housed in a Y-shaped body. Allows for easy cleaning via a blow-off connection.
Size Range:
Typically available from 1/2" (DN15) up to 4" (DN100). Larger sizes might be available from specialist manufacturers but are less common than metal equivalents.
End Connections: (Specify required type)
Flanged: ANSI B16.5 Class 150, DIN PN10/PN16, JIS 10K
Threaded: NPT (National Pipe Thread), BSP (British Standard Pipe)
Socket Weld: For solvent cementing or welding into PVDF piping systems.
Butt Weld: For welding directly into PVDF piping systems.
True Union: Allows for easy removal of the strainer body from the pipeline for maintenance (common in smaller sizes).
Pressure Rating:
Highly dependent on temperature. Typically rated up to 150 psi (approx. 10 bar) at ambient temperatures (e.g., 70°F / 21°C).
Crucially: Pressure rating decreases significantly as temperature increases. Always consult the manufacturer's Pressure-Temperature (P/T) curve for the specific model.
Temperature Rating:
Maximum operating temperature typically ranges up to ~280°F (140°C), but this is highly dependent on the pressure and the specific PVDF grade and construction. Again, refer to the manufacturer's data.
Screen (Filter Element):
Material:
PVDF: Often preferred for maximum chemical compatibility and high purity applications.
Stainless Steel (304 or 316): Less common if PVDF body is chosen for its specific chemical resistance, but can be used.
Specialty Alloys: Hastelloy®, Monel®, Titanium (less common, for very specific aggressive media).
