Response to Hello Jim - You are correct. Part number 18201-0200 Multiport  will work on your System 3 Sand Filter . Please check here for a  complete parts breakdown of this filter. The valve you are looking for is 3rd from the bottom on the list. Thank you 

An image is worth 1,000 words! Add an image or two to your comment to help ensure it is understood accurately.



Yes, please email me exclusive discounts, swimming pool tips and helpful how to guides. This comment may be posted on a public site. Do not include: HTML, references to other retailers, pricing, personal information, or any profane, inflammatory language.