Graco 15B264 Ball Seat 1590 – Product Details & Compatibility
Compatible Machines
The Graco 15B264 Ball Seat 1590 is engineered for use in high‑performance air‑operated diaphragm (AODD) pump systems manufactured by Graco, specifically the Husky 1590 series and similar models utilizing the “1590” ball/seat check‑valve assembly.
- Graco Husky 1590 series AODD diaphragm pumps (1½″ size) and fluid‑handling modules requiring the 1590 ball/seat check system
- Graco pump assemblies where a replacement seat is needed to maintain proper ball check sealing and fluid control
- Graco kits and field service operations where OEM‑specified ball seat parts ensure reliability under cycling fluid loads and wetted‑part exposure
Product Overview
The Graco 15B264 Ball Seat 1590 is a precision manufactured replacement seat component designed to partner with the corresponding ball assembly in the Graco 1590 ball/seat check valve system. It provides the sealing interface for the ball to seat against, controlling back‑flow and ensuring unidirectional fluid movement in the pump’s check‑valve loop. Constructed to the original equipment manufacturer (OEM) specifications, it maintains dimensional accuracy, material endurance and fluid‑compatible sealing performance. Ideal for maintenance, refurbishment or full service rebuilds, this part supports continued pump reliability and helps prevent leakage, air ingestion and performance degradation in demanding industrial environments.
Key Features
- OEM specified Graco ball‑seat component for the 1590 check‑valve system
- Critical interface for reliable ball‑to‑seat sealing and unidirectional flow control
- Engineered for frequent cycling, harsh fluids, and exposure to pressure pulses typical of diaphragm pump service
- Supports economical maintenance and upgrade of pump internals without full valve section replacement
Technical Specifications
| Part Number |
15B264 |
| Description |
Ball Seat 1590 |
| Function |
Seating interface for ball check valve in Graco 1590‑series pumps |
| Installed In |
Graco Husky 1590 series pumps and related fluid‑transfer assemblies |
Usage Notes
- Ensure the pump is depressurized and all fluid lines are isolated before accessing the check‑valve section.
- Use the exact part 15B264 to maintain proper bore dimensions, sealing surfaces and OEM compatibility—substitutes can lead to leakage or premature wear.
- Inspect the mating ball, seat bore and surrounding surfaces for wear, corrosion or debris before installation to guarantee optimal seating and longevity.
- After installation, test the pump under operating conditions and monitor for any signs of back‑flow, pressure drop or early seat wear to validate proper check‑valve function.
Frequently Asked Questions
It serves as the mating seat surface for the check‑valve ball in the Graco 1590 series pump, enabling proper sealing to prevent reverse flow and maintain efficient pump operation.
While alternative seats may physically fit, using the OEM Graco 15B264 ensures correct dimensions, material compatibility and seal integrity necessary for longevity and reliable performance in the 1590 pump environment.
Replace the seat if you detect scoring, pitting, or flattening of the sealing surface; if the ball is no longer seating cleanly; or if there is increased back‑flow, leakage or reduced pump efficiency despite other maintenance.
