Fuel Drain Valve$25.00 Fuel Drain Valve. An alternate part number for this fuel drain valve is F391-18. Out of stock Like Tweet Pin it SKU: SA18 Category: Fuel Tags: Drain, Fuel, Valve Additional information Additional information Weight 1 lbs Dimensions 9 × 7 × 1 in Brand Diamond, Mooney, Piper, Other Related products $4.94 Diamond, Mooney, Piper, OtherFuel Bowl Gasket Add to cart $69.33 Diamond, Mooney, Piper, OtherFuel Drain Valve Add to cart $32.93 DiamondFuel Tank Hose Add to cart $3.30 DiamondFuel O Ring Add to cart