Series DD Pumps

SSP Dual Disc pumps are designed for use within effluent and industrial treatment processes where arduous duties in harsh conditions exist. The SSP Dual Disc pumps have a glandless disc design providing indefinite dry running capability. This design results in good self-priming performance and unparalleled tolerance of problem solids including rag, fibrous matter and grit.

SSP Dual Disc pumps are ideal for primary tank manual and auto de-sludging duties. Other applications include digested and humus sludge, raw sewage, abattoir and poultry wastes, and other industrial waste products.

Operation

The pump’s drive shaft has two connecting rods and rubber discs which are designed to oppose each other in a reciprocating action. A large cavity is formed in the chamber between the discs, opening at one end of the stroke and closing at the other end of the stroke. This produces a positive suction and discharge sequence within the chamber.

User Benefits

• Self priming
• Robust construction
• Glandless
• Dry running capability
• Ability to pump abrasive media
• Cost effective easy maintenance

The SSP Dual Disc range of pumps is constructed from a minimal number of parts. The pump housings are manufactured from cast iron and the high grade elastomer discs and gaskets are manufactured from Nitrile, Neoprene and EPDM. The discs and gaskets are low cost items and, being the main consumable parts, are easily replaceable on site without the need for highly skilled personnel.

The absence of close tolerance clearances in the pumping chamber means that SSP Dual Disc pumps have a high resistance to grit abrasion. This makes them ideal for arduous duties.

Phased Shaft

Phased shaft - SSP Dual Disc pumps have a patented ‘phased’ shaft design. This enables the pump to achieve maximum capacities and speeds thereby overcoming the high noise, vibration and pulsation levels experienced with similar reciprocating pump designs.

Solids Handling Capability

The SSP Dual Disc pump is ideal for solids handling. The flow path through the pump minimises the risk of blockage and allows the passage of solids, rags and fibrous media.

The SSP Dual Disc pump is ideal for solids handling. The flow path through the pump minimises the risk of blockage and allows the passage of solids, rags and fibrous media.

• Flow rates up to 13700 gph
• Differential pressures up to 44 psi
• Sludge thickness content up to 10%
• Suction lift up to 6 meters max.

Reduced Lifecycle Cost

The Dual Disc design with its cost effective easy maintenance eliminates the shaft sealing and valve problems inherent in other pump types on arduous duties. Where dry running and high spares costs are known problems with other pump technologies, such as Progressing Cavity pumps which are traditionally used on lift applications, the use of SSP Dual Disc pumps can result in a reduced lifecycle cost (LCC).

Listed below are optional component configurations that can be used to enhance the operation of the Series DD dual disc pump.

Drive Units

Pumps can be supplied fully guarded mounted on galvanized mild steel base frames. Prime movers include electric motor drives, either fixed or variable speed, that may be adapted for use with proprietary control systems if required. Other prime movers may be fitted such as pneumatic, hydraulic, diesel or petrol powered. The option of a mobile Dual Disc pump unit provides greater versatility of application around the site or plant.

Connections

Flange connections to ASA/ANSI150 and BS4504/DIN2533 standards.

GRP Covers

For frost protection in exposed environments, Dual Disc pumps can be supplied with GRP covers to include heaters.