Overview
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White Knight PSD Series air-operated double-diaphragm (AODD) pumps, feature PTFE or UHMW polyethylene (UHMWPE) corrosion-resistant fluid paths, which make the pumps ideal for corrosive or toxic liquids such as acids, fuels, glues, paints, resins, inks, or wastewater, as well as more viscous fluids and slurry.
The pumps are available in 1/4, 3/8, 1/2, 1, or 1-1/2 in models. They feature high-quality machined designs, unique sealing surfaces, and tight bolt configurations to ensure consistent, reliable performance and superior product containment. They may be configured in various materials to meet most abrasion, temperature, and chemical compatibility requirements. They are dead-head capable and achieve high flow rates while minimizing air consumption and operational noise. The pumps have non-lubricated, self-priming, icing-resistant air systems.
PSD Series pumps are easy to install, operate, and service. They can be serviced in the field to minimize repair costs, downtime, and production loss. They require few parts to rebuild and can be rebuilt in situations that would require other AODD pumps to be replaced, which increases pump life and decreases total costs of ownership.
Maintenance required. Schedule depends on duty cycle.
Features & Benefits
- PTFE or UHMWPE liquid paths
- Machined design (not molded)
- Icing-resistant air systems
- Removeable air motor
- Positive seat-check improves suction lift
- Non-lubricated, self-priming shift mechanism
- In-house engineering and manufacturing
- UHMWPE is 1/2 the weight of steel
- Polypropylene (PP) pump body
- Various diaphragm materials
- Dead-head capable operation
- Dry-run, dry-prime capability
- Small footprint, easy to install and service
- Durable, field rebuildable design with minimal parts
- Multiple liquid inlet/outlet directional setups
- Minimizes factory environment noise and operator fatigue
Performance Curves
PSD24 Performance Curves
*Graph is for reference only. Performance was measured utilizing 1/2 in (3/8 in ID) air line and 1-1/4 in (1-1/8 in ID) liquid lines with 1 ft flooded suction. Performance may vary in your system.
PSD16 Performance Curves
*Graph is for reference only. Performance was measured utilizing 1/2 in (3/8 in ID) air line and 1-1/4 in (1-1/8 in ID) liquid lines with 1 ft flooded suction. Performance may vary in your system.
PSD08 Performance Curves
*Graph is for reference only. Performance was measured utilizing 1/2 in (3/8 in ID) air line and 1-1/4 in (1-1/8 in ID) liquid lines with 1 ft flooded suction. Performance may vary in your system.
PSD06 Performance Curves
*Graph is for reference only. Performance was measured utilizing 1/2 in (3/8 in ID) air line and 1-1/4 in (1-1/8 in ID) liquid lines with 1 ft flooded suction. Performance may vary in your system.
PSD04 Performance Curves
*Graph is for reference only. Performance was measured utilizing 1/2 in (3/8 in ID) air line and 1-1/4 in (1-1/8 in ID) liquid lines with 1 ft flooded suction. Performance may vary in your system.
Dimensions
Specifications
Model | PSD04 | PSD06 | PSD08 | PSD16 | PSD24 |
|---|---|---|---|---|---|
| Max Flow Rate* | 14 lpm (3.6 gpm) | 28 lpm (7.4 gpm) | 63 lpm (16.6 gpm) | 142 lpm (37.5 gpm) | 372 lpm (98.3 gpm) |
| Displacement Per Cycle* | 0.03 l (0.008 gal.) | 0.07 l (0.019 gal.) | 0.16 l (0.042 gal.) | 0.56 l (0.148 gal.) | 1.64 l (0.433 gal.) |
| Connection Sizes/Types | 1/4 in NPT 1/4 in BSP | 3/8 in NPT 3/8 in BSP | 1/2 in NPT 1/2 in BSP | 1 in NPT 1 in BSP | 1-1/2 in NPT 1-1/2 in BSP |
| Max. Size of Passable Solids | 1.5 mm (0.06 in) | 2 mm (0.08 in) | 4 mm (0.16 in) | 5 mm (0.2 in) | 8 mm (0.32 in) |
| Suction Lift Dry* | 2 m (6.5 ft) | 3 m (10 ft) | 3 m (10 ft) | 4 m (13 ft) | 5 m (16 ft) |
| Suction Lift Wet* | 9.5 m (31 ft) | 9.5 m (31 ft) | 9.5 m (31 ft) | 9.5 m (31 ft) | 9.5 m (31 ft) |
| Sound Pressure** | 60.1 dB(a) 70.6 dB(a) | 60.2 dB(a) 66.1 dB(a) | 61.7 dB(a) 82.0 dB(a) | 66.6 dB(a) 83.3 dB(a) | 84.2 dB(a) 89.8 dB(a) |
| Sound Power** | 60.7 dB(a) 64.2 dB(a) | 51.7 dB(a) 58.1 dB(a) | 54.5 dB(a) 74.8 dB(a) | 61.6 dB(a) 78.3 dB(a) | 83.2 dB(a) 91.1 dB(a) |
| Weight (PTFE) | 1.4 kg (3.0 lb) | 3.1 kg (6.8 lb) | 9.0 kg (19.8 lb) | 18.2 kg (40.1 lb) | 43.2 kg (95.2 lb) |
| Weight (UHMW) | 1.8 kg (4 lb) | 2.7 kg (6 lb) | 6.2 kg (13.7 lb) | 12 kg (26.4 lb) | 27.2 kg (60 lb) |
| Max Air/Fluid Temperature | PTFE 100°C (212°F) UHMW 70°C (158°F) | ||||
| Max. / Min. Air Pressures | 7 Bar (100 psi) maximum supply air pressure 2 Bar (30 psi) minimum startup air pressure | ||||
| Fluid Path Materials | PTFE or UHMW | ||||
| Diaphragm Materials | Over-molded PTFE/EPDM, EPDM, or NBR | ||||
| Check Ball Materials | PTFE, NBR, EPDM, or SS | ||||
| Stroke Detection Options | Solid state pressure switch (NPN or PNP) stroke detection | ||||
| Leak Detection Options | Fiber optic (NPN or PNP) or conductivity stroke detection | ||||
| Electronic Control | Available with Electronic Control | ||||
Model | PSD04 | PSD06 | PSD08 | PSD16 | PSD24 |
*May vary depending on materials. Suction lift diminishes over time. Minimize height for best performance.
**Sound Levels measured at 7 Bar 100 CPM (top) and 7 Bar maximum CPM (bottom) in accordance with ISO9614-2:1997.