Fluid-o-Tech
PB401 / PB 401 Fluid-o-Tech 140 GPH 2.33 GPM Standard Bypass Standard No Lead Brass Rotary Vane Pump
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Fluid-o-Tech PB 401 Magnetic Drive High-Temperature Rotary Vane Pump
The Fluid-o-Tech PB 401 is a specialized, compact magnetic drive rotary vane pump from the Rotoflow® line, primarily distinguished by its ability to handle high-temperature liquids up to 180∘C (356∘F) when equipped with appropriate seals. It is ideally suited for closed-loop thermal transfer systems, cooling applications, and other industrial processes where conventional rotary vane pumps would fail due to heat.
Crucially, the PB prefix indicates a Magnetic Drive design. This means the motor power is transferred via magnetic coupling rather than a traditional mechanical shaft seal. This eliminates the dynamic shaft seal entirely, removing the primary point of leakage and wear, offering superior reliability, zero leakage, and maintenance-free operation, especially with challenging or hot fluids. This model provides a flow rate up to 100 LPH (26 GPH) and utilizes a flange mount for secure installation.
Technical Specifications Summary
| SPECIFICATION | DETAILS | NOTES |
| Model Number | PB 401 | 'PB' denotes Magnetic Drive, High-Temperature capable. |
| Manufacturer | Fluid-o-Tech | High-temperature capable model. |
| Pump Type | Rotary Vane, Magnetic Drive | Zero-leakage design due to no mechanical shaft seal. |
| Housing Material | Brass | Durable construction. |
| Bypass Valve | No (PO/PA models include bypass) | Standard model does not include a bypass valve. |
| Port Size | 3/8" NPT or GAS Thread | Standard ports. |
| Nominal Flow (60 Hz / 1725 RPM) | 26 GPH (100 LPH) | Typical flow rate capacity. |
| Max Differential Pressure | 16 bar (230 PSI) | Maximum pressure rating. |
| Max Static Pressure | 20 bar (290 PSI) | Maximum static pressure limit. |
| Max Operating Temp | 180∘C (356∘F) | High-temperature rating when using PTFE seals. |
| Mounting | Flange Mount | Designed for direct coupling to a motor. |
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