Products

PVR Vane Pumps

Variable Displacement, Pressure Compensated Vane Pumps  

Features and Benefits

• Direct spring-operated compensator for fast pressure compensation for variable-system demands
• Patented "Walking Ring" design extends pump life
• Hydrodynamic journal bearings eliminates shaft to bearing contact for long life
• Balanced vane tip loading extends ring and vane life
• One piece forged rotor shaft minimizes shaft deflection
• Efficient port plate design enhances quiet operation
• Patented pressure balanced thrust plate optimizes rotor running clearance and yields pump overall efficiency up to 90%
• Fewer parts than piston pumps provides high reliability
• Complete repair kits are available for fast and complete pump reconditioning
• Tandem cover options permit multiple pump operation with a common input shaft

Product Description

The variable volume and pressure compensated design simplifies circuit design, reduces heat and noise, and can lower horsepower requirements.  These rugged PVR vane pumps feature compact design and excellent horsepower to weight ratios, and are known for being the medium pressure workhorse in the industry.  PVR pumps maintain constant pressure while matching system flow demands. 

A direct spring operated compensator provides fast response for varying system demands and eliminates contamination prone hydraulic assisted compensator valves and pistons.  The patented “Walking Ring” design is a unique indexing pressure ring design that rotates slightly with every change in output.  Wear is distributed evenly around the inside surface of the ring circumference, which helps to extend pump life. 

Hydrodynamic journal bearings eliminate shaft to bearing contact, and since there are no moving parts with this bearing design, pump life is not determined by a B-10 rating.  Balanced vane tip loading acts throughout the entire pumping cycle to extend ring and vane life.  The one piece forged rotor shaft can absorb system loads with minimal deflection.

To simplify maintenance, the patented pressure balanced thrust plate eliminates the need for shims and spacer units, and yields pump efficiencies up to 90%.  Computer designed porting reduces noise at all pressure and flow levels with noise levels as low as 68 dBa [NFPA T3.9 12M-1970 (R1981) Tested].  This can help eliminate the costs for special noise abatement enclosures.

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Specifications

• Mountings:
  • PVR6 and PVR15 series feature SAE 2 Bolt and manifold mountings
  • PVR50 series features the standard Continental 4 bolt mount, as well as an  SAE ‘ D’ 4 bolt mount
• Capacities: 4 to 70 GPM
• Operating Pressures: 100 to 2000 PSI
• Pressure Compensation Ranges: 100 to 2000 PSI
• Recommended Fluids:
  • Petroleum-base, most phosphate esters, water emulsions and water glycol

TYPICAL APPLICATIONS  PVR PUMPS

• Food processing equipment
• Brick and block machinery
• Machine tools
• Production and material handling equipment
• Marine
• Aerospace ground support and training equipment
• Oil field equipment

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