

OEM fluid section repair kit designed to restore sealing performance and flow efficiency in Graco 1590HS FL diaphragm pumps with PO/EP wetted material configuration.
| Pump Series | Configuration | Use Case |
|---|---|---|
| Graco SaniForce 1590 Series | 1590HS FL diaphragm pumps | High-flow sanitary and industrial fluid transfer |
| Graco Hygienic Process Pumps | FL models with PO/EP wetted material setup | Food, beverage, and clean processing environments |
The Graco 25R681 Kit is an OEM fluid section repair kit engineered for rebuilding Graco SaniForce 1590HS FL air-operated double diaphragm pumps. It restores pump sealing performance, flow efficiency, and hygienic operation in high-volume processing applications.
The 1590HS FL --, PO, EP configuration defines the pump’s wetted material system:
This combination ensures stable performance in demanding fluid transfer environments.
The kit provides all essential wetted components required to service the fluid section, helping reduce downtime and maintain OEM-level pump efficiency.
Designed to maintain original pump performance, the 25R681 kit improves reliability, supports sanitary compliance, and extends service life in continuous-duty fluid handling systems used across industrial processing lines.