

Part 944-904 is a replacement tungsten carbide valve seat for a wide range of compatible spray equipment. This precision seat provides a durable sealing surface for check balls in high-wear applications, offering exceptional resistance to abrasion and corrosion. When the original seat becomes worn, pitted, or damaged, replacement restores proper valve sealing and pump performance.
| Part Number | 944-904 |
|---|---|
| Part Description | Tungsten valve Seat |
| Brand | Universal |
| Fits | Admiral; Commander; Hydr M nad Hydra Pro Super; Hydra M and Hydra Pro 2000_4000; PowrLiner 4000; PowrLiner 4900; PowrLiner 5000; PowrLiner 6000; PowrLiner 8900; PowrTwin 3500 50th anniversary; PowrTwin 3500; PowrTwin 4500; PowrTwin 4900GH; PowrTwin 6900GH; PowrTwin 8900GH; PowrTwin 12000 GHD; PowrTwin 12000GH; PowrTwin 12000GHD |
| Condition | New |
The 944-904 tungsten carbide valve seat is a direct replacement component for a wide range of spray equipment including Admiral, Commander, Hydr M nad Hydra Pro Super, Hydra M and Hydra Pro 2000_4000, various PowrLiner models (4000, 4900, 5000, 6000, 8900), and numerous PowrTwin models (3500 50th anniversary, 3500, 4500, 4900GH, 6900GH, 8900GH, 12000 GHD, 12000GH, 12000GHD). This precision seat provides the sealing surface for a check ball in valve assemblies where extreme wear resistance is required. Tungsten carbide is one of the hardest materials used in valve applications, offering exceptional resistance to abrasion, corrosion, and deformation. It is ideal for applications involving abrasive fluids, high pressures, or frequent cycling. The ball seats against this surface to prevent backflow during the pressure stroke. A smooth, perfectly round, and extremely hard seat is essential for achieving a positive seal and reliable valve operation in demanding environments. A worn, pitted, or damaged seat can cause leakage, pressure loss, and reduced pump efficiency. This replacement seat is manufactured to exact specifications for diameter, finish, and material. Installation requires careful removal of the old seat and proper seating of the new one, often using a specialized tool. Tungsten carbide seats are often used in high-wear applications such as abrasive coating sprayers.
| Sealing surface | Provides seat for check ball |
|---|---|
| Wear resistance | Tungsten carbide resists abrasion |
| Pressure retention | Maintains system pressure |
| Worn / pitted surface | Seat no longer seals against ball |
|---|---|
| Loss of pressure | System cannot maintain set pressure |
| Reduced output | Lower than normal material delivery |
| Backflow | Material flows backward through valve |
Tungsten valve seat 944-904 is compatible with the following models. Verify fit using your equipment's parts diagram.
| Compatible Models |
|---|
| Admiral; Commander |
| Hydr M nad Hydra Pro Super; Hydra M and Hydra Pro 2000_4000 |
| PowrLiner 4000; 4900; 5000; 6000; 8900 |
| PowrTwin 3500 50th anniversary; 3500; 4500; 4900GH; 6900GH; 8900GH; 12000 GHD; 12000GH; 12000GHD |
When replacing the tungsten valve seat, inspect these associated components to ensure proper valve function.
Inspect for wear or damage.
Check for proper tension.
Ensure seat bore is clean.