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Denison Vane Pumps
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Denison Vane Pump Specifications
Single, Double,& Triple Vane Pumps 
Industrial Applications
Series T6

Operation of these rugged hydraulic pumps is simple. The rotor, driven by the shaft, carries the vanes in radial slots. The vanes follow the cam ring through their cycle, two cycles per revolution for each vane; suction-seal-discharge-seal. 

The rotor is loaded by the vane only when they are on the major and minor arcs of the cam contour. Diametrical balance of vanes, ports and pressures causes the rotor to see only pure torque loads from the pumping action. The generous shaft bearings carry only the overhung and axial loads imposed by the pump drive. 

The inlet flow feeds through ports on both sides of the cartridge as well as through a large port through the cam ring at each suction ramp. This improves inlet conditions; permits, greater displacement units for the envelope size, reduces wear and allows higher speed operation.

The pressure in the over-vane areas is equalized by the radial holes through the vanes. A firm but light force against the vane is provided by the pin, subjected to the steady pin cavity pressure. This force assures smooth cam tracking by the vane.The vanes, thus, are held outward in a light but steady contact against the fluid film which separates them from the cam ring. Their radial position changes to follow the cam and to adjust for fluid viscosity, contaminants and component wear.

The rotor is separated from the sideplates by the fluid film. The sideplates are clamped axially by an overbalance of the internal pressure forces in the pumping cartridge. They accommodate dimensional changes due to temperature and pressure. The rotor and cam ring of tough, through-hardened steel contribute to the long efficient service life.

The T6 double pump is two hydraulic pumps in a single housing. Each is driven by the common inlet port. Each discharges from its separate outlet port and operates only at the pressure imposed only on it. Both pumps drain internally to the inlet ports so no drain is required.

Inlet pressure is measured at inlet flange with petroleum base fluids at viscosity between 60 to 300 SUS. The difference between inlet press. at the pump flange and atmospheric press. must not exceed 2.9 PSI to prevent aeration.Multiply absolute by: 

• 1,25 for HF-3, HF-4 fluids.
• 1,35 for HF-5 fluid.
• 1,1 for ester or rapeseed baseUse highest cartridge absolute pressure for double pump.