The Graco 25P088 Kit, Valve, Flapper, 1590 is a genuine OEM replacement kit designed to restore the performance of compatible Graco 1590 sanitary air-operated double diaphragm (AODD) pumps. The kit includes replacement flapper valves that help maintain proper one-way fluid flow, prevent backflow, and improve pump priming and efficiency. It is intended for pumps equipped with flapper-style check valves and is not compatible with ball-check pump configurations.
Compatible Machines
- Graco 1590 HS Flapper Pump (Horizontal)
- Graco 1590 3-A Sanitary Flapper Pump
- Graco 1590 Sanitary Flapper Pump (Food, Beverage, Dairy & Pharmaceutical Models)
Product Features
- Genuine OEM Graco replacement part.
- Designed specifically for 1590 sanitary diaphragm pumps with flapper check valves.
- Helps maintain proper one-way fluid flow through the pump.
- Improves pump priming and overall pumping efficiency.
- Reduces fluid backflow caused by worn or damaged flappers.
- Manufactured to meet original equipment performance and reliability standards.
Product Specifications
| Part Number | 25P088 |
| Product Name | Kit, Valve, Flapper, 1590 |
| Manufacturer | Graco |
| Component Type | Flapper Valve Kit |
| Pump Type | Sanitary Air-Operated Double Diaphragm (AODD) Pump |
| Compatible Valve Style | Flapper Check Valve |
| Application | Replacement of worn flapper valves to restore pump performance |
Typical Applications
The Graco 25P088 Kit, Valve, Flapper, 1590 is commonly used in sanitary fluid handling systems where reliable flow control and hygienic operation are essential.
- Food processing
- Beverage production
- Dairy processing
- Pharmaceutical manufacturing
- Cosmetic production
- General sanitary fluid transfer applications
When Should the Flapper Valve Kit Be Replaced?
Replacing worn flapper valves helps maintain consistent pump operation and reduces unplanned downtime. Consider replacing the kit if you notice:
- Difficulty maintaining pump prime.
- Reduced flow rate or pumping efficiency.
- Fluid backflow during operation.
- Inconsistent pump performance.
- Damaged, worn, or hardened flapper valves.
Frequently Asked Questions
The kit replaces worn flapper valves in compatible Graco 1590 sanitary diaphragm pumps, helping restore proper flow, sealing, and pump efficiency.
It is designed for Graco 1590 sanitary pumps equipped with flapper-style check valves, including HS Flapper and 3-A sanitary models. It is not intended for ball-check pump configurations.
Yes. The Graco 25P088 Kit, Valve, Flapper, 1590 is a genuine OEM replacement part manufactured to meet original equipment specifications.
Common signs include poor priming, reduced flow, fluid backflow, inconsistent pumping performance, and visibly worn or damaged flapper valves.
