HV & HVR SERIES

Centrifugal Vertical Heavy-Duty Slurry Pumps are designed for semi-submerged operation in the harshest environments, providing long and trouble-free service. HV and HVR pumps are suitable for continuous operation and high specific gravities, with various lengths to fit common sump depths. 

Specifications

The HV and HVR series features a submersible suction end with a top and bottom intake capability. The double-suction arrangement provides for greater flow and is less prone to material “coning” typically observed with bottom-only intake. An added benefit of double-sided impellers is reduced axial bearing loads. The impellers are open-type for large particle passage and delivers efficient flow and even wear throughout the life cycle of the part.

The cantilever design has no submerged bearings and shaft sleeves for ease of maintenance and protection against water ingress while eliminating the complexity of mechanical seals. The oversized bearing types are double-row taper thrust (lower) and cylindrical roller (upper) to mitigate against damaging vibrations and are grease-purged for protection against dirt.

The shaft is similarly oversized and made of high-strength alloy steel to reduce deflection, increase bearing life and allow for higher critical speeds.

Casings are ultra-thick and incorporates the discharge neck to eliminate a major failure point of some other vertical pump designs.

A heavy-duty mounting plate supports the pump and auxiliary equipment and requires only four mounting anchors.

HV / HVR pumps are designed to “snore” and even run dry without any adverse effects.

Standard wet-end materials are HART ToughM27 High Chrome White Iron for HV and HART R60 Natural Rubber for HVR pumps. Other materials like N21 and N23 Stainless Steel and exotic polymers are available on request for specific demanding applications.

An optional agitator arrangement prevents sump silting with settling slurries. A bottom suction extension can be specified for pumping out deep-set pits and sumps. In applications where contact may cause damage or degradation of the medium (e.g. carbon transfer duty) a recessed vortex impeller is used. HV and HVR pumps can be tank-mounted for self-contained operation.

Applications

Designed for semi-submerged operation in the harshest environments, HART HV and HVR series heavy-duty vertical slurry pumps provide long and trouble-free service. With generous passage for large particles these pumps are specified for service in:

  • Mining and mineral processing process and spillage sump duties
  • Mill scale pumping in steel mills
  • Sugar cane processing
  • Non-contact induced-flow pumping of impact-sensitive media like carbon transfer or froth (when provided with an optional recessed vortex impeller)

HV and HVR pumps are suitable for continuous operation and high specific gravities, in both abrasive and corrosive applications.  Various lengths to fit common sump depths are available.

DESIGN FEATURES

Impeller Design

The double-suction arrangement provides for greater flow and is less prone to material “coning” typically observed with bottom-only intake. An added benefit of double-sided impellers is reduced axial bearing loads. The impellers are open-type for large particle passage and delivers efficient flow and even wear throughout the life cycle of the part.

This results in uniform wear, longer wear life of wet-end parts and sustained high efficiency. Several types of hard metal and moulded elastomer impellers are interchangeable. Impeller threads are cast-in, eliminating the need for impeller inserts or nuts.  

Outer Casing

Casings are ultra-thick cast or ductile iron and incorporates the discharge neck to eliminate a major failure point of some other vertical pump designs.

The cantilever design has no submerged bearings and shaft sleeves for ease of maintenance and protection against water ingress while eliminating the complexity of mechanical seals. The oversized bearing types are double-row taper thrust (lower) and cylindrical roller (upper) to mitigate against damaging vibrations and are grease-purged for protection against dirt.

The shaft is similarly oversized and made of high-strength alloy steel to reduce deflection, increase bearing life and allow for higher critical speeds.

Interchangeable Submersible Parts

Hard metal submersible parts are interchangeable with pressure molded elastomers, such as the impeller and bottom strainers. All submerged metal parts are coated with a cured rubber for corrosive applications in our HVR range.

SPS Application Engineers are experienced to recommend the ideal wet end materials for your application.

Cartridge : Type Shaft and Bearing Assembly

The cartridge arrangement allows servicing in a clean environment without removing the pump. A large diameter shaft with short overhang minimizes deflection and vibration. Heavy-duty, grease-lubricated cylindrical and/or taper roller bearings are enclosed in a cartridge-type housing protected at both ends by a rotating labyrinth, double piston rings and grease purged lip-seal. Where drive power exceeds the maximum power rating of the standard bearing assembly, double-bearing cartridge assemblies provide greater power handling. 

Optional Extras

A reversible, slip-fit, stainless steel shaft sleeve, through hardened with O-rings at both ends completely protects the shaft.  Tungsten coated shaft sleeves are offered for ultra-demanding applications. 

An optional agitator arrangement prevents sump silting with settling slurries. A bottom suction extension can be specified for pumping out deep-set pits and sumps. In applications where contact may cause damage or degradation of the medium (e.g. carbon transfer duty) a recessed vortex impeller is used. HV and HVR pumps can be tank-mounted for self-contained operation.

Pump Mounting Plate

A rigid, one-piece casting cradles the bearing assembly. Only four bolts are required to hold the bearing assembly on the mouting plate. An easy means of external impeller adjustment is provided in a convenient position below the bearing housing. The complete pumpset is held in place by 4 bolts on the mounting plate.