EXCHANGE REQUIRED Discontinued by Daisy in August 2023. Exhaust Valve Assembly for Daisy 717, 722, 747, 777, 880, 881, 917, 922, 970, 977, etc. This is the Screw in type exhaust Valve and it comes with the 0-ring on it. These are rebuilt with new o-rings and valve stem. Daisy stopped providing the tapered exhaust Valve sometime between 1994 and 2005. The Round or Domed Valve is a direct replacement from the factory. EXCHANGE INSTRUCTIONS: YOU MUST HAVE AN EXCHANGE TO PURCHASE THIS PART AND IT MUST BE IDENTICAL TO PICTURE OR DESCRIPTION. WE CANNOT SHIP YOUR ORDER UNTIL WE RECEIVE YOUR PART. PLACE YOUR ORDER, SEND YOUR UNDAMAGED PART VIA USPS ONLY, USING A PADDED ENVELOPE, TO JGAIRGUNS P.O. BOX 830, MUNDELEIN, IL 60060. INCLUDE ENOUGH POSTAGE. DO NOT INCLUDE ANY EXTRA PARTS, THEY WON’T BE RETURNED. DO NOT REQUIRE A SIGNATURE, IT WILL BE REFUSED. DO NOT SEND US TRACKING INFORMATION. IF YOU WANT TO KNOW WHEN IT ARRIVES, USE YOUR TRACKING INFORMATION BECAUSE YOU WILL NOT BE NOTIFIED. IF YOU ARE WORRIED ABOUT LOSS, PURCHASE INSURANCE, WE ARE NOT RESPONSIBLE.