Self Priming Centrifugal Pumps — SM/SG Series
Self priming centrifugal pumps with up to 7.5 m suction lift — SG Series up to 250 m³/hr and 35 m head, SM Series up to 100 m³/hr and 60 m head, at 800 kPa and 95 °C.
The SM & SG Series are self priming centrifugal pumps suitable for transferring liquids clean or polluted in nature. With a negative suction capability of up to 7.5 metres, these pumps are ideal for draining buildings, ponds, ditches, swimming pools, chemical transfers, agricultural irrigation, sewage plants, and general industrial use.
The SG Series is available with multiple gland packing options (Graphite PTFE, Pure PTFE, Acrylic Fibre) as well as mechanical sealing, making it the choice where minimal leakage is acceptable. For zero leakage applications, the SM Series with its mechanical seal design is the better choice. Both series feature a half-open impeller with an optimised volute design for high efficiency, smooth surfaces, and minimum internal losses.
The SG Series delivers up to 250 m³/hr capacity and 35 m head, while the SM Series provides up to 100 m³/hr capacity and 60 m head. Both operate at a maximum working pressure of 800 kPa (8 Bar) and temperature up to 95 °C. The SG Series is available in both 2900 RPM and 1450 RPM configurations with models ranging from 80-210 to 150-290n at the lower speed.
Built with a steel alloy or stainless steel shaft protected by shaft sleeves, 2-deep groove ball bearings with oil bath lubrication, and an easy back pull-out design for quick maintenance, the SM & SG Series pumps are compact, space-saving, and designed for minimum downtime. All pumps are tested to ISO 9906 Gr II/III standards.
Key features
- Self priming with negative suction of up to 7.5 metres
- SG Series: gland packing with multiple packing options, plus mechanical sealing for minimal leakage
- SM Series: mechanical seal design for zero leakage applications
- Easy back pull-out design for quick maintenance with minimum downtime
- Half-open impeller with improved and efficient design for high capacity
- Optimised volute design with smooth surfaces for high efficiency and minimum internal losses
- Steel alloy or stainless steel shaft with shaft sleeve options — no contact between shaft and liquid
- 2-deep groove ball bearings sealed for life or oil lubricated, plus double row angular contact bearing
- Oil bath lubrication with sight glass, constant level oiler, and large drain plug
- Smoothly designed suction entry for optimum NPSH and minimal flow distortion
- Compact, space-saving, and practical design with hassle-free installation
- Available in 2900 RPM and 1450 RPM configurations (SG Series)
Outcomes
- Handles clean or polluted liquids with self priming up to 7.5 m suction lift — no foot valve required
- SG Series delivers up to 250 m³/hr capacity and SM Series up to 60 m head for diverse duty points
- Multiple gland packing and mechanical seal options ensure compatibility with acids, alkalis, water, and chemicals
- Max working pressure of 800 kPa (8 Bar) and temperature up to 95 °C across both series
- Tested to ISO 9906 Gr II/III with material certification and performance test results
Who it's for
Industrial process pumping, agricultural irrigation, building water transfer, draining ponds, ditches, and swimming pools, chemical transfers, sewage plants, water purification plants, circulation pumps and heating systems, marine applications, and general-purpose utility pumping.
Standards & certifications
- ISO 2858
Performance envelope — SG Series
Overall operating range for the SG (gland packing) Series.
| Specification | Value |
|---|---|
| Capacity | Up to 250 m³/hr |
| Head | Up to 35 m |
| Working pressure | Up to 8 Bar (800 kPa) |
| Temperature | Up to 95 °C |
| Speed | Up to 3600 RPM |
| Suction lift | Up to 7.5 m |
Performance envelope — SM Series
Overall operating range for the SM (mechanical seal) Series.
| Specification | Value |
|---|---|
| Capacity | Up to 100 m³/hr |
| Head | Up to 60 m |
| Working pressure | Up to 8 Bar (800 kPa) |
| Temperature | Up to 95 °C |
| Speed | Up to 3600 RPM |
| Suction lift | Up to 7.5 m |
Technical specifications
Common specifications across the SM & SG Series range.
| Specification | Value |
|---|---|
| Impeller | Half-open — improved and efficient design for high capacity |
| Volute | Optimised design with smooth surfaces for high efficiency and minimum internal losses |
| Shaft | Steel alloy or stainless steel — rigid, with shaft sleeve options |
| Shaft sleeve | Extended impeller key ensures co-rotation — no contact between shaft and liquid |
| Bearings | 2-deep groove ball bearings (sealed/oil) + double row angular contact bearing + roller bearing |
| Lubrication | Oil bath with sight glass, constant level oiler, breather plug, and large drain plug |
| Suction design | Smoothly designed entry for optimum NPSH and minimal flow distortion |
| Maintenance | Easy back pull-out design for quick servicing with minimum downtime |
| Testing standard | ISO 9906 Gr II/III |
Gland packing options (SG Series)
Select gland packing material based on liquid compatibility.
| Specification | Value |
|---|---|
| Graphite PTFE | For acidic liquids |
| Pure PTFE | For highly acidic and hotter temperature liquids |
| Acrylic Fibre | For water, salt application, milk alkali, or acidic liquids |
Mechanical seal options (SM & SG Series)
Select mechanical seal type based on liquid and leakage requirements.
| Specification | Value |
|---|---|
| STD | Carbon VS Ceramic with NBR elastomer |
| CCV | Ceramic VS Ceramic with Viton elastomer |
| CCT | Silicon Carbide VS Silicon Carbide with PTFE elastomer |
| SSV | Silicon Carbide VS Silicon Carbide with Viton elastomer |
Applications
Industrial process pumping
Chemical transfers, process circulation, and industrial liquid handling with multiple gland and seal options.
Agricultural irrigation
Self priming irrigation pumps for farms, fields, and agricultural water supply.
Building water transfer
Water transfer in buildings, draining ponds, ditches, and swimming pools.
Water & sewage treatment
Water purification plants and sewage treatment facilities.
General purpose & HVAC
Utility building circulation pumps, heating systems, and general duty pumping.
Marine applications
Seawater and marine liquid handling applications.
Focus areas
- Pumping Solutions