Zenith PEP-II Series Precision Gear Pump
Optimizing extrusion processes with reduced heat and required torque and the elimination of surging
The Zenith PEP II series are common in extrusion processes. The Zenith gear pump optimizes the extrusion process by allowing the screw to melt and homogenize the polymer. As the pump generates the needed pressure, it relieves the extruder of work; therefore, reducing heat from the shear, lowering the torque required and eliminating surging.
The Pep II pumps are also offered with the Rheoseal. The Rheoseal design includes reverse flights inside the seal chamber, as well as a water channel to cool the polymer and a backup lip seal. The rotating shafts create a mechanical action on the material, which pumps the polymer back into the pump cavity and seals the shaft from the leakage.
Zenith Pumps provides typical drive and control packages, as well as custom systems designed to meet your particular process specifications. Our extensive experience and full engineering capabilities ensure you the best possible solution to your precision extrusion application.
Zenith’s standard extrusion control package provides the basic controls for PEP-II pump systems. The drive consists of a motor and reducer mounted on a common base plate, with speed controlled by a Zenith ZVD digital speed controller. A pressure control system regulates the extruder speed and maintains a constant pressure to the pump inlet. A temperature controller regulates the pump’s electric heaters. Other features available include:
- Discharge pressure indicator
- Pump inlet/discharge flanges
- Pump fluid or steam heat plates
- Heat plates for extreme service
- System mounting carts
- Start-up assistance
Available Capacities 0.16 - 750 cc / rev
Flow Rate 0.2 - 7,000 lbs/hr
Max Operating Temperature 950F
Max Discharge Pressure 10,000 psi
Purpose built design for polymer extrusion applications
Extremely precise and repeatable metering. Flow stays near constant without need for expensive flow meters and control systems.
Metering under extreme operating conditions, such as high viscosity, high temperature, high pressure.
Pulse free metering and dosing