About Smalline
SmalLine is the industry leader for innovation in manufacturing a line of high quality, extremely heavy duty, high capacity, high-performance pumps with longevity. Double diaphragm pumps range in size from 4 to 6 inches, and they pump anything from clear water to the murkiest of sludge. Our pumps have served for years in the fields of construction, mining, excavation, plants and refineries, equipment rental, and fluid remediation.
Descriptions Of SL6DDP – 6 In Double Diaphragm Pump

A small 6-inch Double Diaphragm Pump is referred to as SL6DDP. The construction sector frequently uses this kind of positive displacement pump to move mud, slurries, and other abrasive materials. At five feet of suction, the pump can move 410 gallons per minute (GPM). It has a 28-gallon fuel capacity and is driven by a diesel engine. The dimensions of the pump are 92 inches in length, 58 inches in breadth, and 58 inches in height. It weighs 1440 pounds.
Engine Specifications
- Engine Make/Model HATZ 1D42 5.7 HP@ 2000 RPM
- Engine Displacement 21.2 CI (0.445 Liters)
- Type One Cylinder Air Cooled (Diesel)
- Standard Equipment Instrument Control Panel w/Hour meter
- Safety Shutdowns Low Oil Pressure
Pump Specifications
- Pump Casting: ASTM A36
- Pump Capacity: 410 GPM @5FT SUCTION
- Solid Handling : 4.0 / 101.60 mm
- Suction & Discharge Check Valve: Stainless steel
- Flapper Valves: Weighted reinforced neoprene
- Clean Out : (5) Large 5”x7”
- Axle Type 3500 Torflex
- Wheels & Tires: 175/80 R13
- MAX CFM: 63
- Max Operating: Temperature 120 ?F/48.89 ?C
- Max Suction Lift 28ft /8.54m
- Max Operating: Speed 70 RPM
- Max Working: Pressure 30 PSI
- Max Operating Time 90 HRS
Additional Information
- Capacity – 410 GPM @ 5ft Suction
- Fuel Capacity – 28 U.S. Gallons
- Hours – 90 hrs/Tank Of Fuel
- Net Weight – 1440 lbs
- Overall Length – 92 inches
- Overall Width – 58 inches
- Overall Height – 58 inches
- Pump Construction – ASTM A-36 steel
- Hitch – Reversible / 2” Ball/Ring
- Support Stands – Front & Rear Adjustable
- Axle – 3600 Torflex
- Wheels – 13? Steel (white spoke)
- Tires – 175/80 R13
- Cleanouts – (5) Large 5?X7?
- Suction Connection – 6? FPT (single point connection)
- Discharge Connection – 6? FPT (dual, left, and/or right)
- Pump Diaphragm – TPE
- Engine Type – Air Cooled / Single Cylinder Diesel
- Engine Manufacturer – Hatz 1D42 5.7 hp @2000 RPM
- Fuel – Diesel
- Lifting Bale – Heavy Duty Single Point
- Engine Displacement – 21.2 Cl (0.445 liters)
- Standard Equipment – Instrument Control Panel with Hour Meter
- Safety Shutdowns – Low Oil Pressure
- Solid Handling – 4.0” (101.6mm)
- Suction & Discharge Check Valve – Stainless Steel
- Flapper Valves – Weighted Reinforced Neoprene
- Max CFM – 63
- Max Operating Temp. – 120°F / 48.89°C
- Max Suction Lift – 28 Ft (8.54m)
- Max Operating Speed – 70 RPM
- Max Working Pressure – 30 PSI
Sources: smallinepumps.com/sl6ddp-1
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