- Maintain-In-Place™ hinged housing design for elastomer replacement without disturbing piping
- Two-piece swan neck
- Non-close tolerance = Low wear = Long Operating Life
- Runs dry without damage
- Seal-less design, no packing gland or mechanical seals, no seal water required
- No internal check valves, no fouling problems
- Self-priming with high suction lifts
- Passes up to 3/4″ solids and line size semi-solids
- No routine maintenance required
- Compact footprint
- Custom configurations available
- Two-year warranty
Need a pump to move sludge and slurry? We have the right piece of equipment for you. The 3DDSX22 is a leader in sludge pumps. Designed to feed and transfer tough to handle sludge and slurry, this double disc pump model is typically used for primary sludge, waste activated sludge, and feeding smaller dewatering devices such as screw presses, rotary presses, belts presses and centrifuges. It features a displacement of 0.22 gal/rev at 60 feet TDH at 300 RPM. It has a flow range up to 120 GPM and an operating speed of 400 RPM.
Typical Flow Range | Up to 120 GPM |
Displacement | 0.22 gal/rev @ 60ft TDH @ 300 RPM |
Operating Speed | Up to 400 RPM |
Discharge Pressure | Up to 60 psi operating |
Suction Pressure | Up to 25” Hg (28ft) |
Fittings | 3” 150# Flanged |
Material | Optional | |
Housings | Cast iron | Lined with Porcelain Glass, Neoprene, PVC, Tungsten Carbide, others |
Elastomers | Neoprene | Buna-N, EPDM, HNBR, Viton, others |
Connecting Rods | High-tensile Aluminum |
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Drive Shaft | High tensile 400 Series SS |
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Eccentric Cams | High tenisle bronze alloy |
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Bearing Pedestals | Aluminum |
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Frame and Covers | SS304 | SS316, Galvanized Steel |
Type | Optional | |
Static | Electric belt and pulley | Gerar reduced direct drive, Air and Hydraulic motor |
Portable | Electric, Gas and Diesel Engine |
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Double Disc Pump - Accessories
We offer a variety of accessory items for Double Disc Pumps to help complete your pump installation, improve the application or make maintenance a little easier. We offer vacuum and pressure sensor and switch assemblies as well as a back pressure valve for low TDH and negative TDH applications. We can also provide pump control panels to include a traditional across the line motor starter or more sophisticated soft start and variable frequency drive (VFD) controls.
Double Disc Pumps - Upgrade and Exchange Program
While we are confident in our pumps’ unmatched durability, reliability and performance, at some point maintenance will be required to keep them operating at optimal performance. That is why at Penn Valley Pump we offer an upgrade/exchange program. You can choose to get an exchange pump identical to the model you have or upgrade to one of the newer models that provide a lower operating speed and improved maintenance features.
Operating Principle of the Double Disc Pump
The Double Disc Pump™ combines the performance features of a positive displacement pump and the principle of ‘induced flow’ to provide versatility in fluid handling. Based on a ‘free disc’ technology, the pump utilizes a unique principle of operation. The pump is based on a non-close tolerance design and is very resistant to wear. With this low friction design the pump can run dry without damage.
Double Disc Pumps Technology Overview
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Double Disc Pumps - Technology Overview
Double Disc Pumps Maintenance Disassembly and Reassembly Process
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Double Disc Pumps - Maintain-In-Place
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