Win Win waterjet provide many kinds of waterjet parts, OEM/ODM available 

CP022046/593 Valve Seat for BFT waterjet 

To find BFT spare parts, the best option would be to contact an authorized BFT waterjet cutting machine supplier or manufacturer. They will have access to genuine BFT spare parts and can ensure that you receive high-quality parts that are compatible with your specific waterjet cutting system.

You can search for authorized BFT suppliers and manufacturers online, or you can contact BFT directly for a list of authorized dealers in your area. When contacting a supplier or manufacturer, be sure to have the model number and serial number of your BFT waterjet cutting system on hand, as this information will help ensure that you receive the correct spare parts.

In addition to authorized suppliers and manufacturers, you may also be able to find BFT spare parts from third-party suppliers or online marketplaces.  Always make sure to verify the authenticity and compatibility of any spare parts you purchase from third-party sources before using them in your BFT waterjet cutting system.