Home / Repair Parts / Hydromatic Parts / Hydromatic 517280005 – KIT – FLAP VALVE 3in. Free Shipping Hydromatic 517280005 – KIT – FLAP VALVE 3in.$1,702.50 Hydromatic 517280005 - KIT - FLAP VALVE 3in. quantity Add to cart SKU: 517280005 Category: Hydromatic Parts Tags: free shipping, Hydromatic Eng Parts Description Additional information Description Hydromatic 517280005 – KIT – FLAP VALVE 3in. Additional information Weight 40 lbs