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Upgrade the capacity of your BCP thrust bearing We understand that your plant is likely operating with quicker start-ups and shutdowns, and more frequent load changes, than it was originally designed for. These operating modes can cause pre-mature bearing wear or, in some cases, catastrophic failure. We have designed a solution for this problem. DEFINING THE PROBLEM At Hayward Tyler, we have observed an increasing trend in cycling operation of the BCP to support flexible plant operation. In this scenario, the suction pressure to the pump can drop below the water vapor pressure, causing steam flashing in the pump. ROTATING ASSEMBLY (EXISTING SINGLE THRUST DESIGN) THE RESULT Steam flashing in the pump results in a loss of hydraulic thrust, causing: 1. Substantial reverse thrust damage 2. Unstable radial loading 3. A lack of lubrication at the close clearance ring fits 4. A lack of NPSHa causing pump cavitation EXISTING SINGLE THRUST DESIGN Main thrust pad (high capacity) Thrust disc with single plate Reverse thrust plate/wear ring (low capacity) Loss of hydraulic thrust causes excessive reverse thrust loading

Upgrade the capacity of your BCP thrust bearing

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Page 1: Upgrade the capacity of your BCP thrust bearing

Upgrade the capacity of your BCP thrust bearingWe understand that your plant is likely operating with quicker start-ups and shutdowns, and more frequent load changes, than it was originally designed for. These operating modes can cause pre-mature bearing wear or, in some cases, catastrophic failure. We have designed a solution for this problem.

DEFINING THE PROBLEM

At Hayward Tyler, we have observed an increasing trend in cycling operation of the BCP to support flexible plant operation. In this scenario, the suction pressure to the pump can drop below the water vapor pressure, causing steam flashing in the pump.

ROTATING ASSEMBLY (EXISTING SINGLE THRUST DESIGN)

THE RESULT

Steam flashing in the pump results in a loss of hydraulic thrust, causing:

1. Substantial reverse thrust damage2. Unstable radial loading3. A lack of lubrication at the close clearance ring fits4. A lack of NPSHa causing pump cavitation

EXISTING SINGLE THRUST DESIGN

Main thrust pad(high capacity)

Thrust disc with single plate

Reverse thrust plate/wear ring(low capacity)

Loss of hydraulic thrust causes excessive reverse thrust loading

Page 2: Upgrade the capacity of your BCP thrust bearing

Performed with your motor installedTHE SOLUTION: DOUBLE THRUST BEARING UPGRADE

For further information about thrust bearing upgrades for your BCP, contact your local salesperson or [email protected]

This bearing upgrade can be performed without the need to remove your BCP from its installed location. The upgraded parts can be ordered ahead of time, and the work can be completed as part of a thrust inspection or a scheduled upgrade. The new parts fit exactly to your existing design without the need for any machining.

BENEFITS OF UPGRADING

When you upgrade your reverse thrust bearing, you’ll take advantage of these benefits:

gUp to 10x the reverse thrust bearing load capacitygUses OEM qualified bearing material for superior performancegCan be upgraded in-situ during a thrust inspectiongUses a proven thrust bearing designgNo machining required

1. New thrust disc with upgraded bearing material

2. New reverse thrust pads

4. New reverse thrust cover

3. New reverse thrust seat

Existing reverse thrust wear ring and filter remain unchanged

Existing main thrust pads and seats remain unchanged

UPGRADED DOUBLE THRUST DESIGN

Hayward Tyler is a division of Avingtrans PLC12-2020 US

UNITED KINGDOMHayward Tyler LtdLuton, United Kingdom

+44 (0)1582 [email protected]

USAHayward Tyler IncVermont, USA

+1 (802) 655 [email protected]

INDIAHayward Tyler India Haryana, India

+91 129 251 3579/251 [email protected]

CHINAHayward Tyler Kunshan Kunshan, China

+86 512 [email protected]

Engineered solutions for the global energy sector

ISO 9001 & ISO 14001 Accredited