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. Check out our Products and Support page to see the details.
The Products Of Smalline Pumps
Diaphragm Pumps
SL4DDP – 4 IN DOUBLE DIAPHRAGM PUMP

Specifications
- 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
- 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
SL4DDP – HESP – 4 IN DOUBLE DIAPHRAGM PUMP ENCLOSED

Specifications
- Capacity – 304 GPM @ 5ft Suction
- Fuel Capacity – 14 U.S. Gallons
- Hours – 70 hrs/Tank Of Fuel
- Net Weight – 1205 lbs
- Overall Length – 84 inches
- Overall Width – 58 inches
- Overall Height – 50 inches
- Pump Construction – ASTM A-36 steel
- Hitch – Reversible / 2” Ball/Ring
- Support Stands – Front & Rear Adjustable
- Axle – 2200lbs, Torsion
- Wheels – 13? Steel (white spoke)
- Tires – P155 X 80R13
- Cleanouts – Large cleanouts/access to flapper valves
- Suction Connection – 4? FPT (single point connection)
- Discharge Connection – 4? FPT (dual, left, and/or right)
- Pump Diaphragm – TPE
- Engine Type – Air Cooled / Single Cylinder Diesel
- Engine Manufacturer – Options: 1D42-Z 5.7hp @ 2000RPM (Kubota or Yanmar)
- Fuel – Diesel
- Lifting Bale – Heavy Duty Single Point
- Engine Displacement – 25.2 CI (0.413 liters)
- Standard Equipment – Instrument Control Panel
- Safety Shutdowns – Low Oil Pressure
- Solid Handling – 3.0” (76.2mm)
- Suction & Discharge Check Valve – Stainless Steel
- Flapper Valves – Weighted Reinforced Neoprene
- Max CFM – 46
- 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
Enclosed Pumps
SL6DDP-HESP – 6 IN DOUBLE DIAPHRAGM PUMP ENCLOSED

Specifications
- 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
Source: smallinepumps.com
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