P500 Wanner Hydra-Cell Pro^® High-Pressure Metering Pump

Seal-Less Metering Pump — 12 to 426 GPH, up to 2,500 PSI

The Wanner Hydra-Cell Pro^® P500 metering pump is designed for high-pressure applications in the 1,000 to 2,500 PSI range. (For lower-pressure duties within this flow range, see the P600 metering pump.) Customers select the P500 for its smooth flow rate and seal-less design that satisfies API 675 standards for steady-state accuracy, linearity and repeatability.

The P500 is a standard Hydra-Cell Pro Model D15 pump fitted with a gearbox. The gearbox mechanically reduces shaft speed while maintaining constant torque, lowering the required motor horsepower — especially when additional turndown is provided by a variable-frequency drive (VFD).

Technical Specifications

Flow Control

As a positive-displacement pump, each shaft rotation displaces a fixed volume of fluid, so flow rate is determined by shaft speed. Most VFDs offer programmability and can interface with a customer-supplied PLC.

User-Friendly Design & Low Maintenance

The seal-less design not only allows the P500 to handle difficult fluids (for example, injecting disodium phosphate for boiler treatment) but also simplifies the process end of the pump. The only wear components in contact with the pumped fluid are its ten check valves.

After 9–12 months of continuous operation (approximately 6,570–8,760 hours) the valves and seats wear and require replacement. This is accomplished without special tools by removing ten cap screws and the pump manifold. The change-out typically takes about 90 minutes and can often be performed without removing the pump body from the system. Maintenance is significantly less expensive than pumps that use mechanical seals, and check-valve wear is gradual rather than catastrophic.

Additional Technical Resources

• P500 Hydra-Cell Pro Metering Pump Catalog Pages
• P500 Hydra-Cell Pro Metering Pump IOM Manual