Request For Price Alternate Part NumberPart NameReplaced PNQuanityMaterial Condition A523A5029-3 Double Pilot Check Valve Factory New New Unused Surplus Overhauled Used Any Aircraft Models Boeing (747-100 with P&W engines Series JT9D-3, JT9D-3A, JT9D-7, JT9D-7H, JT9D-7A, JT9D-7AH, JT9D-7F AND JT9D-7J) Company Name First Name * Last Name * Email * Phone Number * Notes Sales Order T&CPrivacy Policy Send Request Please note that by requesting pricing, you are accepting our Sales Order T&C and Privacy Policy. For more information, please follow the links under the policy menu below.