Check function
State normal flow, reverse-pressure case, installation orientation and expected operating differential.
Fluoropolymer-lined non-return valves
PFA-Lined Check Valves
Three catalog-listed non-return mechanisms: ball check, visual ball check and wafer check. Each has its own size table, construction and installation considerations; the combined range does not imply interchangeable ratings.
Non-return selection
Choose the check mechanism before confirming the lined construction
The process duty determines whether a ball, visual-ball or compact wafer mechanism should be reviewed. Media chemistry then determines the acceptable lining and wetted-material package.
- 3Three catalog configurations
Ball, visual-ball and wafer mechanisms provide different installation envelopes and flow behavior.
- FFlow direction matters
Orientation, minimum differential pressure and allowable pressure loss must be checked for self-acting duty.
- MMechanism-specific review
Do not transfer sizes, dimensions or pressure references between the three check-valve constructions.
Product range
Published selection parameters
Use these values to prepare an inquiry. The final quotation identifies the selected model, materials, dimensions and operating limits.
| Catalog configurations | Lined ball check, visual ball check and wafer lined check valves | Range |
|---|---|---|
| Ball-check size range | DN15–DN200 | Range |
| Visual ball-check size range | DN15–DN200Pressure must be confirmed for the selected visual construction. | Range |
| Wafer-check size table | DN50–DN600 | Range |
| Pressure reference | 1.6 MPa for the lined ball-check and wafer-check catalog entries | Range |
| Operation | Self-acting non-return duty | Range |
Media behavior
Identify viscosity, solids, crystallization, deposits and any need for visual observation.
Installation envelope
Confirm flange standard, face-to-face space and whether a compact wafer body is required.
Transient conditions
Provide pump start-stop, pulsation and surge information relevant to the non-return duty.
Related products: All PFA-lined valves · PFA-lined ball valves
Selection support
Define the non-return duty, not only the pipe size.
Send flow direction, orientation, pressure profile, medium, solids, temperature, flange standard and allowable pressure loss for configuration review.