Nipple Close by Close

Nipple Close by Close For systems rated under 300 GPD (or 10" housings), you need our nipple close by close (1/4" x 1/4); for systems rated over 300 GPD (or 20" housings), please select 3/8" or 1/2" fitting above in the drop down options box. Standard FeaturesNipple close by close. When you want to connect 2 or more standard 10-20" housing caps together as close as possible. 1/4 by 1/4 nipple close by close is the connection for ALL of our housing caps in our reverse osmosis (including RODI) systems rated under 300 GPD (because we use standard 10" housings for these systems). For 300 GPD or greater we use 17-20" housings which could include either a 3/8" or 1/2" connection. Illustrations/Diagrams/Instructions How to use Push In Quick Connect fittings