Bell & Gossett P57000 Impeller Washer

The Bell & Gossett P57000 Impeller Washer is a critical piece of OEM pump hardware designed specifically for 1/2-inch shafts in three-piece booster pumps and centrifugal circulators. As an experienced technician knows, maintaining the structural integrity of the rotating assembly is paramount to preventing impeller vibration and premature seal failure. This heavy-duty washer provides the exact tolerance required to secure the impeller against the shaft sleeve, ensuring axial alignment and reducing mechanical stress during high-velocity fluid transfer.

Engineered for compatibility across an extensive range of B&G equipment, the P57000 is an essential component for the Series 60, Series 90, and Series 1522 pumps, as well as legacy models like the Series 100, HV, and PR. Using genuine Bell & Gossett replacement parts during a teardown or seal replacement prevents the tracking issues often associated with generic hardware. This washer is built to withstand the rigorous thermal cycling and pressure differentials common in commercial hydronic heating and cooling systems, maintaining a consistent clamp load for long-term operational reliability.

• Precision Fit: Optimized for 1/2-inch pump shafts to ensure perfect centering of the impeller.
• Broad Compatibility: Supports a wide array of B&G circulator pumps, including Series 60, 90, 100, and 1522.
• Hydraulic Efficiency: Prevents impeller shift, which maintains the tight volute clearances needed for peak GPM performance.
• Industrial Durability: Manufactured from high-grade materials to resist corrosion and mechanical wear in treated water systems.
• Direct OEM Replacement: Guarantees 100% interchangeability with original P57000 hardware found in factory submittals.

Which B&G pump series use the P57000 impeller washer?
This washer is primarily used in pumps with a 1/2-inch shaft, including the Series 60, Series 90, Series 100, Series 1522, and various booster models like the HV, PD, and PR.

Is this part included in standard seal kits?
While some comprehensive rebuild kits include hardware, the P57000 is often a separate line item. It is recommended to replace this washer whenever the impeller nut is removed to ensure a secure lock.

Can I use a standard hardware store washer instead?
No. Standard washers lack the specific thickness, material grade, and outer diameter tolerances required for high-speed centrifugal pump impellers, which can lead to imbalance and shaft damage.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.