ZENITH PEP-II Series
Optimizing extrusion processes with reduced heat and required torque and the elimination of surging
MFG in Monroe, NC USA
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:
Precision Gear Pumps
Product Performance You Can Rely On
Precision gear pumps are an integral part of many manufacturing processes requiring metering, mixing, dispensing, coating, and extruding, where accuracy and uniformity of flow are critical. That’s why manufacturers in industries from manmade fibers and polymers to food and medical devices have relied on Zenith gear pumps since 1926. With high metering accuracy, pulse-free flow, and long wear life across a wide range of fluid and pressure conditions, the Zenith Pumps brand is synonymous with high performance and reliability.
In addition to standard product offerings, Zenith can provide custom-engineered pumps for demanding services, such as submersible, flushable, and sanitary applications. Backed by the resources of CIRCOR Engineered Systems group, Zenith Pumps can provide a complete custom-engineered system along with the pump, from the tank to the controls, letting you focus on your core competency while we develop a fluid handling, mixing, or metering system aimed at providing the highest precision and reliability possible.
- 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
Product Models and Specifications:
| PEP II Series | |
| 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 |
Other data
Design standard: Manufacturer STD
Fluids: Acrylic, Adhesives, Cellulosics, Hot Melt, Polyesters
Sealing: Packing, Lip seals, Single Mechanical seal
- 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
Max gpm: 36.00
Max lpm: 136.27
Max m³/hr: 8.18
Max bar (dp): 275.79
Max psi (dp): 4000.00
Max cSt [mm²/s]: 2000000.00
Min cSt [mm²/s]: 30.00
Min SSU: 141.50
Max C°: 510.00
Max F°: 950.00
Min C°: 0.00
Min Fº: 32.00
Trust Zenith for Your Metering Solutions
Engineered Pump Solutions to Dose Your Ingredients
Whether you are spraying, blending or injecting your fluid material, repeatability is of paramount importance. Zenith products assure accurate metering over a wide range of applications and process fluid conditions. Add a drive system and incorporate a closed-loop speed controller to maintain metering accuracies of +/- 1 percent.
In addition to accurate delivery, close tolerance precision gear metering pumps with only two moving parts are reliable in service and have virtually pulse-free fluid performance. A gear metering pump’s tight internal clearances are as small as 50 millionths of an inch, ensuring a consistent flow rate and high-pressure capabilities where they are needed the most.
Delivering engineering and design expertise for solutions that address unique process requirements and save time and money.
