

The Graco 257377 Pump Outlet Check Kit is a genuine OEM replacement assembly designed to maintain proper fluid flow and prevent backflow in compatible Check-Mate supply systems.
The Graco 257377 Kit, Pump Outlet Check is a genuine OEM replacement outlet check assembly designed for select stainless steel Check-Mate displacement pumps. This kit helps maintain proper fluid flow, prevents material backflow, and supports stable operating pressure in demanding industrial pumping applications.
| Pump Series | Compatible Models |
|---|---|
| Check-Mate 60 Stainless Steel | L060SS, L060SM |
| Check-Mate 100 Stainless Steel | L100SS, L100SM |
| Included Component | Description |
|---|---|
| Male Connector | Connection fitting for outlet assembly installation. |
| 3/4 in. NPT Check Valve | Stainless steel check valve rated for high-pressure operation. |
| Elbow Fitting | Provides proper outlet routing and connection. |
| Pipe Sealant | Helps create secure and leak-resistant threaded connections. |
A properly functioning outlet check assembly is essential for maintaining efficient pump operation. Replacing a worn or damaged check valve can help reduce pressure fluctuations, minimize material backflow, and support reliable system performance during production.
This kit is commonly used on Graco bulk supply and material transfer systems that utilize compatible stainless steel Check-Mate pumps. Before ordering, verify the displacement pump model installed on your equipment to ensure proper fitment.