Check the listing for details. FOR WATERWAY 600-7300 TRUSEAL CHECK VALVE LID COVER TOP WITH O-RING 600-7300B W. Condition: New. Listed at 20.50 USD. Description: Replaces model: 600-7300B 600-7300 Keep your pool or spa system running smoothly with this replaceable swing check valve and cover assembly Please note: 1. This is an aftermarket part, not an OEM one. Please make sure it will fit your machine before placing order(s). 2. If you are not sure whether the part will fit your machine or not, please message us and let us know your engine model, machine model, we will help. More information, more helpful. 3. If buyer orders wrong item, buyer will be responsible for return and exchange postage. Thank you for your kind understanding in advance. 4. All items are shipped from US warehouse(s). We usually use USPS to ship parcels. All parcels are picked up within 1 business day, delivered within 3~7 Business days.