Grainger has contacted the product supplier and has been advised by them of the following:
This valve is an internal OEM replacement component for fuel transfer pumps, specifically item numbers 4RP93, 1P894, 4RP94, and 4FY15. The manufacturer has stated the operating specifications of this valve are proprietary, and will not be disclosed, as they allow it to only be used in specific units. If you are using a different transfer pump, please contact us at 1-800-GRAINGER with your pump model number, and we will be happy to check for the proper replacement part.
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