Features of the Tuff Pumps C & CV Series

Standardization:
Manufactured strictly to ANSI B73.1 specification for centrifugal chemical pumps, with 21 horizontal pump sizes built around 3 power frames (designated as pump groups), the C Series maximizes bareshaft pump and spare parts interchangeability, and additionally reduces inventory requirements. In addition to the horizontal configuration, the CV Series provides a vertical cantilever (tank type mounting) option that covers all of the 21 available pump sizes. Each vertical cantilever pump is tailored to suit customer requirements.

Greater Wear Life:
By utilizing high-grade cast irons, carbon steel, and stainless steel alloys; with 316 & Duplex St. Steel being commonly applied, together with extra thick material sections, the C Series maximizes wear life and reduces life-time costs. Where specifically requested or deemed a process necessity, the C Series can be supplied with alternative materials of construction and tailored to suit specific process liquors. All pump fasteners are in 304 or 316SS unless otherwise specified.

Ease of Maintenance:
Simplified and faster maintenance is facilitated by the incorporation of a back pullout spacer type coupling design within the entire C Series pump range ~ with the ability to remove the complete bearing frame/rotating assembly without disturbing the pump casing, suction and discharge pipework, or the electric motor/diesel engine driver

Fixed / Variable Speed:
All C Series pump impellers can be cut to size to suit specific fixed speed duty conditions or, if so desired, can be left full size diameter when coupled to a variable speed driver

Top Centreline Discharge:
The C Series pump range is furnished with a top centreline casing discharge nozzle in order to provide self-venting of air-entrained liquors, and, coupled with a rigid foot mounted casing design, simplifies piping layouts, and minimizes induced stresses and potential misalignment problems.

High Performance:
All C Series pumps have been designed with volutes and impellers that optimize erosive and corrosive liquor handling abilities with high efficiencies and lower power costs. Impeller adjustment is facilitated by the incorporation of an extremely accurate, high quality, rigid "shim set" that enables the user to counter normal (suction side) casing/impeller wear and improve/restore pump efficiency whilst leaving the complete pump in situ.

Semi-open Impeller:
All C Series pumps are designed to handle erosive/corrosive, low suction pressure, chemical and process liquors, thereby requiring cast iron, carbon steel, or stainless steel alloy semi-open flow inducing contoured vane impellers with relief holes that withstand erosion/corrosion, prevent high thrust loads and stuffing box pressures, and additionally increases bearing and rotodynamic seal lives.

High Shaft & Bearing Strength:
Over and above wear part strengths and planned longevity of life, the C Series range of pumps has taken this design philosophy farther, by incorporating oversized high tensile or stainless steel alloy shafts and similarly oversized bearings; with the outboard, drive end bearing designed to take a combination of relatively high radial and thrust loads, whilst the inboard, impeller end (floating) bearing is designed to take radial loads only.

Maximum Bearing Protection:
All C Series pump bearings are double protected against the ingress of liquids and/or solid particles by an effective combination of outer deflectors or labyrinth seals and inner double lip oil or grease seals with other, more complex options available should the duty and/or application necessitate same. Bearing condition and general pump health can be remotely analyzed by the incorporation of optional electronic bearing sensors.

Lubrication:
The C Series pump range can be supplied with oil bath, oil mist, or grease lubricated bearings; with the standard default system being oil mist. Extra large oil sight glasses or constant oil levelers are fitted as standard, with electronic oil detectors available as an optional extra. Bearing housing oil cooling systems are also available upon request and/or should the application operating temperature dictate necessary.

Rotodynamic Sealing:
The C Series pump range is fitted ~ as standard ~ with 316SS glands and high grade GFO packing, however, should the application and/or customer require otherwise, the C Series pump range can be fitted with the following options:-

• Alternative Gland Packing Materials
• Mechanical Sealing Compounds
• Single or Double Mechanical Seals
• Single or Double Dynamic Seals (otherwise known as Expellers)
• Auxiliary/External Sealing Systems
• Oversized Parallel and Oversized Tapered Stuffing Boxes for Mechanical Seals ~ providing superior cooling/lubrication and/or self-venting conditions.