Graco 108944 Buna Ball, 715

Overview – Graco 108944 Buna Ball / 715

This genuine OEM part is a **Buna‑N (nitrile) check ball** used inside Graco diaphragm pumps to provide one‑way sealing and reliable flow control.

Compatible Machines

• Graco Husky 515 series (½″ diaphragm pump) — uses Ball 108944 when built with Buna‑N balls. :contentReference[oaicite:1]{index=1}
• Graco Husky 716 / Husky 715 series (¾″ diaphragm pump) — Buna‑N ball option lists part number 108944. :contentReference[oaicite:2]{index=2}

Key Features & Benefits

• Genuine Graco OEM part – ensures optimal fit and performance.
• Buna‑N material provides excellent sealing for general purpose fluids and moderate temperature applications.
• Direct drop‑in replacement for Graco pumps built with Buna balls—restores proper check valve operation and maintains pump performance.

Installation & Service Tips

• Depressurize and shut off the pump before accessing the ball check valve to ensure safety.
• Remove the ball check plug, inspect the ball cavity for wear or damage, and replace the old ball with the new 108944 part.
• Re‑torque the plug to the manufacturer’s spec (refer to your pump manual). After installation, run the pump at reduced pressure and check for leaks or flow irregularities.
• If your pump handles abrasive fluids, high density slurries or high temperatures, consider selecting a ball made from PTFE or stainless steel instead of Buna‑N. :contentReference[oaicite:4]{index=4}

Frequently Asked Questions