Description
The Bell & Gossett 115111 Suction Diffuser Plus is a high-performance pump accessory engineered to optimize centrifugal pump operation in hydronic and HVAC systems. Designed with a 6″ flange on the system side and a 5″ flange on the pump side, this unit delivers smooth, uniform flow to the pump inlet — reducing turbulence, improving efficiency, and extending pump service life.
Key Features
- 6″ system-side flange x 5″ pump-side flange connection
- Cast iron body construction for durability and long service life
- Steel inlet vanes for precise flow straightening and conditioning
- Steel orifice cylinder for accurate flow measurement and balancing
- Includes 16 mesh bronze start-up strainer to protect pump during commissioning
- Rated for 250°F (121°C) operating temperature
- Centrifugal pump suction diffuser design eliminates need for straight pipe run at pump inlet
Product Benefits
- Combines suction diffuser, strainer, and balancing functions in a single compact unit
- Reduces installation space requirements compared to separate components
- Protects pump impeller from debris during system start-up with the bronze mesh strainer
- Straightens turbulent flow entering the pump, reducing cavitation risk and improving NPSH performance
- Suitable for hot water heating, chilled water, and other hydronic system applications
Specifications
- SKU: 115111
- Brand: Bell & Gossett
- System-Side Connection: 6″ Flange
- Pump-Side Connection: 5″ Flange
- Body Material: Cast Iron
- Inlet Vanes & Orifice Cylinder Material: Steel
- Start-Up Strainer: 16 Mesh Bronze
- Max Operating Temperature: 250°F
- Type: Suction Diffuser Plus
Application
The Bell & Gossett 115111 Suction Diffuser Plus is ideal for commercial and industrial hydronic systems where centrifugal pump performance and longevity are critical. By combining flow conditioning, start-up straining, and balancing capability into one assembly, it simplifies installation and reduces overall system component count. Suitable for use in heating, cooling, and process piping applications rated up to 250°F.
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