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Disclaimer: Keystone Pumps does not represent and is not in any way affiliated with Warman® a registered trademark of Weir Minerals Australia Ltd. Pumps represented on Keystone Pumps W-Series, Pumps webpage are not genuine OEM pumps either manufactured or authorized by Warman®. These specific Keystone Pump products are sold as after-market pumps. All names, numbers, symbols, and descriptions are used for reference purposes only and do not imply that any part or pump listed is the product of any company other than Keystone Pumps.