Bell & Gossett 105139LF (PDB-40T) Bronze Booster Pump – 1½ HP, Inline, 1¼” × 1¼”
The Bell & Gossett (105139) PDB40T, 1 1/2HP, 3PH, BNZ Body
Overview
The Bell & Gossett 105139LF is a factory-assembled bronze booster pump (model PDB-40T) with a 1½ horsepower motor. Designed for potable water, chilled water, or boiler feed applications, this inline pump offers reliable boost performance, corrosion resistance, and long service life. Its compact, all-bronze flow path ensures compatibility with hydronic systems and meets building water standards without sacrificial protection.
Specifications
| Specification | Details |
|---|---|
| Brand / Model | Bell & Gossett 105139LF (PDB-40T) |
| Pump Type / Configuration | Inline booster pump |
| Motor Power | 1½ HP (or equivalent nominal motor rating) |
| Connections (Inlet × Outlet) | 1¼” × 1¼” |
| Material | Bronze / semi-bronze flow path |
| Application Fluids | Potable water, chilled water, boiler feed or boiler makeup |
| Impeller / Volute Material | Bronze / corrosion-resistant metals |
| Typical Use / Service | Pressure boosting, domestic water systems, hydronic loops |
| Operating Conditions | Designed for continuous duty in compatible systems |
Features & Benefits
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All-bronze construction for corrosion resistance in potable and hydronic systems
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Inline design simplifies installation in tight plumbing runs
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Robust motor and pump design ensures reliable boosting capability
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Ideal for booster, circulation, or service water feed applications
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Compatible with hydronic systems and meets the requirements for Non-ferrous fluid paths
Applications
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Domestic water pressure boosting in multi-story buildings
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Condenser water make-up in HVAC systems
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Boiler feed or makeup water in hydronic loops
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Potable systems where corrosion resistance is required
Installation & Maintenance Notes
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Ensure proper alignment, plumbing support, and vibration isolation
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Priming is necessary before operation in some installations
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Inspect mechanical seals, impellers, and motor bearings periodically
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Maintain system cleanliness to avoid debris damage to bronze internals
Warranty & Quality Assurance
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Built to Bell & Gossett quality and specs for durability and performance
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Covered under standard OEM warranties when installed and used per guidelines
Related Products
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Other Bell & Gossett inline booster pumps (different HP / sizes)
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Bronze pumps for potable and hydronic use in the PDB / PLD family
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Replacement motors, mechanical seals, and repair kits



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