








Williams P500V400 Pneumatic Metering Pump
| Specification | Detail |
|---|---|
| Manufacturer | Williams Pumps |
| Model | P500V400 |
| Product Type | Pneumatic Metering / Chemical Injection Pump |
| Drive Type | Pneumatic (air‑driven) |
| Maximum Flow Rate | 2.30 GPH (Gallons per Hour) |
| Maximum Flow Rate | 8.71 LPH (Liters per Hour) |
| Maximum Pump Pressure | 9,200 psi |
| Maximum Pump Pressure | 634 bar |
| Stroke Length | 0–1.0 in (0–25 mm) |
| Pump Operation | Positive displacement plunger style |
| Control Options | Pneumatic actuation with optional solenoid or controller (model dependent) |
| Materials (Typical Wetted) | Stainless Steel (e.g., 316/316L) |
| Seals / Packing | Chemically compatible elastomers (varies with service) |
| Fluid Compatibility | Most industrial chemicals, corrosion inhibitors, process fluids |
| Maximum Air Supply Pressure | (Consult Williams spec — typical pneumatic range up to ~100–120 psi) |
| Connections | NPT threaded inlet/outlet (model dependent) |
| Typical Applications | High‑pressure chemical injection, corrosion control, process dosing |
| Weight (Approx.) | (Supplier specific — ~varies by configuration) |
| Control Accessories | Optional solenoid valve, stroke controller, relay, positioner |