
Additional ports available on back.
Overview
PSB Series diaphragm pumps feature PTFE and PFA fluid paths for high-purity chemical delivery, dispense and transfer applications. It is capable of 95 lpm (25 gpm) flow rates and 5.5. Bar (80 psi) air supply pressures. PSB100 pumps are direct retrofit replacements for obsolete chemical delivery pumps.
Features & Benefits
- Leak-free check caps with tongue-&-groove seals
- High-density PTFE prevents frequent tie bolt retorque
- Durable machined design with minimal parts
- Process-safe PTFE, PFA flow paths for high-purity chemicals
- Internal, non-stall shuttle valve saves space and eliminates resets
- Pneumatic Logic™ provides dead-head operation without stall
- No exposed metals
- Reliable, safe operation
- 95 lpm (25 gpm) flow rates
- 5.5. Bar (80 psi) air pressures
- Various liquid connection options
- Quick-install base plate
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. Chart represents flow at 5,000 ft, adjusted to sea level.
Dimensions
Specifications
Model | PSB100 | PSBEC100 |
---|---|---|
Maximum Flow Rate* | 95 lpm (25 gpm) | 95 lpm (25 gpm) |
Size of Air Connection | 1/2 in. FNPT | 1/2 in. FNPT |
Displacement Per Cycle* | 0.074 liter (0.042 gal.) | 0.074 liter (0.042 gal.) |
Cycles Per Minute* | 170 max | 170 max |
Weight | 15.7 kg (34.7 lbs.) | 15.7 kg (34.7 lbs.) |
Suction Lift* | 4 m (12 ft) | 4 m (12 ft) |
Max Temperature | 100°C (212°F) | 100°C (212°F) |
Max Air Pressure | 5.5 Bar (80 psi) | 5.5 Bar (80 psi) |
Min Startup Pressure | 1.4 Bar (20 psi) | 1.4 Bar (20 psi) |
Fluid Path Materials | PTFE / PFA | PTFE / PFA |
Stroke Detection Options | Solid state pressure switch (NPN or PNP) | Yes |
Leak Detection Options | Conductivity leak detect | Yes |
Electronic Control | CPC, CPT, or custom. Contact White Knight. | No |
Model | PSB100 | PSBEC100 |
*May vary depending on configuration. Suction lift diminishes over time. Recommended installation level less than 3 ft above source. Contact White Knight for details.