Replacement valve assembly compatible with 51 series diaphragm pumps.
- Compatible with 51 series diaphragm pumps
- Complete valve assembly for inlet and outlet check valves
- Durable chemical‑resistant elastomer and reinforced plastic construction
- Fits 12.7 mm (1/2 in) hose barbs
- Restores pump flow and prevents backflow
- Easy direct replacement with no modifications required
- Suitable for potable water and marine applications