EP Series Positive Displacement Pumps for High Pressures

July 1, 2024
Vogelsang's EP series of rotary lobe pumps provide a uniform pressure output of 260 psi while pumping abrasive, chemically aggressive, and explosive flow media at temperatures up to 392°F.

The EP series, a line of positive displacement pumps designed specifically for typical requirements of industrial pumping applications, including those of the oil & gas market, handles extreme conditions and constant high pressures. A heavy-duty gearbox allows for a uniform pressure output of up to 260 psi (18 bar).

The pumps have a one-piece housing that can pump abrasive, chemically aggressive, and explosive flow media at temperatures of up to 392°F (200°C). Helical gears in the gearbox offer a smooth performance and reduce noise emissions. Pulsation-free conveying reduces wear on the adjacent pipeline while providing a low-shear pumping action.

“The EP series' high-pressure performance and temperature limits make it suitable for applications in the oil & gas industry, paints & coatings, paper manufacturing, glue, sugar production, tank farms, and the petrochemical industry, where our customers previously used screw, gear, and progressing cavity pumps. Rotary lobe pumps save more space and are more energy-efficient and service-friendly in comparison,” says Vogelsang USA President Russ Boring.

Vogelsang has added an AirGap for high operational reliability to the EP pumps. The AirGap atmospherically separates the gearbox and pump chamber, so that if there's a leak, the liquid will drain off to the outside rather than leaking into the gearbox. The AirGap also protects the gearbox when pumping high-temperature media.

The seals comply with specific industry standards and also increase the reliability of the pumping process and help to ensure maximum uptime.

  • CoX-Cartridge: a double mechanical seal ideal for adhesive or chemically aggressive media.
  • API-Cartridge: Double mechanical seal per API 682 guidelines, including the execution of flushing plans in accordance with API specifications. Suitable for use in the chemical, petroleum, and natural gas industries

With the Automatic Supply Unit (ASU), Vogelsang is introducing a unique seal supply system that compliments the EP pump line. The ASU is much smaller than conventional seal supply systems and is easy to install, even in confined spaces. The patented system supplies lubricant to the seal with every rotation of the pump to sustain the sealing pressure. This maintains overpressure, extending the service life of the seal.


  • High efficiency due to one-piece housing
  • High pressures
  • Unparalleled quietness due to high-performance gearbox
  • Compliance with industry-specific standards through new sealing options
  • AirGap for protection of gearbox and pump chamber
  • For media up to 392°F (200°C)

Price: Contact the company for pricing


EP Series Spec Sheet

Ravenna, OH
(330) 296-3820
[email protected]

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