Using the Request for Quote (RFQ) form provided on this page, you can request competitive procurement options on part number 5151HK-20 with rapid responses always offered by our staff. To ensure that you locate and procure exactly what you need with ease, we list parts with as much information as we can. For example, part number 5151HK-20 It is listed as Parts Kit Diaphragm Replacement. component manufactured by Parkerhannifin Corporation, specifically under CAGE Code 09990. It is also accompanied by the NSN 4820012754526 for ease of organization, the first digits of the NSN indicating that the part belongs to FSC 4820 Valves Nonpowered.