Corken Pumps

Corken is a diversified company that serves a worldwide customer base. Corken truck pumps, stationary pumps, compressors and engineered packages are used by a wide range of companies throughout the world. For decades Corken has specialized in the transfer of hazardous, non-lubricating liquefied gases and low viscosity liquids. Corken pumps have thrived in these specialty applications that have been troublesome for other common pump designs.

PFC Equipment offers a complete line of products and services for all fluid handling applications. We provide unmatched service and support in Minnesota, North Dakota, South Dakota, Iowa, and western Wisconsin. Our application experts will help you select the best pump, filter and control for your specifications. We also provide system design services for all markets and applications.

Corken Pumps Sliding Vane Pumps Explainedcorken pumps

Corken pumps are used in a wide range of applications within the LPG, refined fuels and chemical industry. The sliding vane pump is a popular design for applications requiring flow rates of 20 gpm or more. The sliding vane design combines low cost with high reliability and easy maintenance.

The operating principle is simple. A slotted rotor is eccentrically supported in a cycloidal cam. The rotor is placed close to the wall of the cam so a crescent shaped cavity is formed. The rotor is sealed into the cam by two side-plates. The clearance between the rotor and side-plates is eight to ten thousandths of an inch depending on the model. Vanes, also known as blades, slide in and out of the rotor slots to seal off a volume between the rotor, cam and side-plate. Liquid enters the crescent shaped pumping chamber through holes in the cam. The blades sweep the fluid to the opposite side of the crescent where it is squeezed through the discharge holes of the cam as the blade approaches the point of the crescent.

For a sliding vane pump to function properly, the blade must always contact the cam wall to form a tight seal. Centrifugal force provides some force to actuate the blade but this force is not adequate by itself. Hydraulic forces exerted by the liquid being pumped tend to push the blades back into the rotor. Special design features must be incorporated into the pump to counteract these forces. This is generally accomplished by routing discharge pressure under the blade via slots in the side-plates or holes in the blade.


CP-Model Sliding Vane Pump Overview

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corken pumps

CP-model sliding vane industrial pumps are designed for a maximum working pressure of 200 psi (13.8 bar). The sliding vane design has self-adjusting vanes that offers a consistent level of pumping efficiency throughout the life of the pump. They are constructed with a combination of gaskets and O-rings, have an adjustable internal relief valve, and a wide variety of mechanical sealing options. Ideal for petroleum products with low vapor pressures such as petroleum based oils, fuel oils and lube oils, and thin liquids such as alcohols and solvents. Available in 2”, 2.5”, 3” and 4” sizes.

Operating Specifications

  • Flow rates up to 400 gpm (1,514 l/min)
  • Working pressures up to 200 psi (13.8 bar)
  • Differential pressures up to 125 psi (8.6 bar). Exception: 4″ models are limited to 100 psi (6.9 bar).
  • Temperature range: -25 to 225 °F (-32 to 107 °C)
  • Viscosities up to 20,000 SSU (4,250 cSt)

CD-Model Sliding Vane Pump Overview

corken pumpsCorken Brochure

CD-model sliding vane industrial pumps are designed for a maximum working pressure of 400 psi (27.6 bar). The sliding vane design has self-adjusting vanes that offers a consistent level of pumping efficiency throughout the life of the pump. They are constructed with a combination of gaskets and O-rings, have an adjustable internal relief valve, and a wide variety of mechanical sealing options. Ideal for petroleum products with low vapor pressures such as petroleum based oils, fuel oils and lube oils, and thin liquids such as alcohols and solvents. Available in 2”, 2.5”, 3” and 4” sizes.

Operating Specifications

  • Flow rates up to 400 gpm (1,514 l/min)
  • Working pressures up to 400 psi (27.6 bar)
  • Differential pressures up to 125 psi (8.6 bar)
  • Temperature range: -25 to 225 °F (-32 to 107 °C)
  • Viscosities up to 20,000 SSU (4,250 cSt)

Magnetic Drive Option Overview corken pumps

Corken Pumps

The magnetic drive is a sealless design and is available with select CP (low pressure) and CD (high pressure) sliding vane models only. The magnetic drive series is ideal for pumping hazardous, toxic, foul smelling or otherwise difficult-to-seal thin liquids. The magnetic drive configuration is designated by the letter “M” with the model number. The model numbers for our magnetic drive sliding vane pumps begin with CPM and CDM. The operating specifications for the magnetic drive models are the same as the standard CP- and CD-models. For details on the operating specifications, refer to the pages containing our standard models.

Operating Specifications

  • Flow rates up to 200 gpm (757 l/min)
  • Working pressures up to 400 psi (27.6 bar)
  • Differential pressures up to 125 psi (8.6 bar)
  • Temperature range: -25 to 225 °F (-32 to 107 °C)
  • Viscosities up to 20,000 SSU (4,250 cSt)

 

Hydraulic Drive Option Overview

Corken Brochure

corken pumps

When an electric motor drive is not a preferred option, misalignment has been an issue, or you have limited space, the hydraulic drive is a great solution. This option allows for direct mounting of a hydraulic motor and forms a compact alignment. The hydraulic drive option is available with the CP-, CD-, PT-, PZ- and Z-model product groups. The hydraulic drive configuration is designated by the lettter “H” within the model number. The model numbers for our hydraulic drive sliding vane pumps begin with CPH, CDH, PTH, PZH and ZH. The operating specifications for the hydraulic models are the same as the standard CP-, CD-, PT-, PZ- and Z-models. For details on the operating specifications, refer to the pages containing our standard models.


PT-Model Sliding Vane Pump Overview corken pumps

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Unlike the CP- and CD-models, they do not come with a replaceable liner or sideplates. They have an adjustable internal relief valve and fewer mechanical sealing options than our CP- and CD-model pumps. Available in 2”, 2.5” and 3” sizes.

Operating Specifications

  • Flow rates up to 263 gpm (995 l/min)
  • Working pressures up to 200 psi (13.8 bar)
  • Differential pressures up to 125 psi (8.6 bar)
  • Temperature range: -25 to 300 °F (-32 to 149 °C)
  • Viscosities up to 20,000 SSU (4,250 cSt)

PZ-Model Sliding Vane Pump Overview corken pumps

Corken Brochure

The PZ-Series sliding vane pumps are specifically designed for petroleum products and industrial solvents. This industrial pump line is ideal for bulk pump loading and unloading, fuel oil delivery truck, and transport applications. Suitable liquids include petrochemicals, fuel oil, gasoline, biofuels, ethanol, solvents and many more.

Unlike the CP- and CD-models, they do not come with a replaceable cam; however, you can replace the sideplates. They have an adjustable internal relief valve and fewer mechanical sealing options than our CP- and CD-model pumps. Available in 2” and 2.5” sizes.

Operating Specifications

  • Flow rates up to 165 gpm (624.5 l/min)
  • Working pressures up to 200 psi (13.8 bar)
  • Differential pressures up to 125 psi (8.6 bar)
  • Temperature range: -25 to 300 °F (-32 to 149 °C)
  • Viscosities up to 20,000 SSU (4,250 cSt)

D- & F-Model Sliding Vane Pump Overview

Corken Brochure

The D- and F-model sliding vane pumps have a working pressure of 350 psi (25.2 bar) are ideal for low flow applications involving light liquids. Unlike the CP-, CD- and Z-models, they do not have a replaceable cam but you can replace the sideplates. The internal relief valve is adjustable and there are a wide variety of mechanical sealing options. Available in a 1” inlet and a .75” outlet only.

The D-model sliding vane is a bare pump that can be close-coupled to any NEMA 56 or 66 C-face motor. With a close-coupled design, there are no special alignment requirements so installation is quick and easy. An F-model sliding vane pump is a frame mount design that is mounted to a baseplate and requires a coupling and coupling guard.

The D- and F-model pumps are suitable for LPG (propane & butane), agricultural ammonia, and many more liquefied gases as well as light liquids.

Operating Specifications

  • Flow rates up to 6 gpm (23 l/min)
  • Working pressures up to 350 psi (25.2 bar)
  • Differential pressures up to 125 psi (8.6 bar)
  • Temperature range: -25 to 225 °F (-32 to 107 °C)
  • Viscosities up to 400 SSU (88 cSt)