I have 2 faucets at my kitchen sink: one for regular water stuff and the 2nd for drinking water. Lines running from the drinking water faucet are 3/8" female compression. My ecopure inline water
plumbing - 1/4 male compression end on inline water filter to 3/8 male compression (fine threads) - Home Improvement Stack Exchange
plumbing fixture - How do you connect 3/8 compression male hose to 1/4 filter tube (blue tube)? - Home Improvement Stack Exchange
This brass male increasing adapter connects flexible PVC coil pipe to the barbed end and a female NPT thread to the male end. This adapter meets federal low lead regulations. Use with clamps on the barbed end.
Water Source 3/4 in. x 1 in. Brass Male Increasing Adapter
Pipes unscrew, but don't screw back together - Home Improvement Stack Exchange
plumbing - which valve fitting / adapter combination can i use to connect my kitchen faucet and undersink water filter to my cold water line? - Home Improvement Stack Exchange
Splits one 1/4-in air line input into two 1/4-in outputs. Allows connection of 2 tools to a single outlet. 360 Degree swivel reduces hose kinking.
Kobalt Swivel Splitter 1/4-in Industrial | SGY-AIR191
plumbing - 1/4 male compression end on inline water filter to 3/8 male compression (fine threads) - Home Improvement Stack Exchange
plumbing - which valve fitting / adapter combination can i use to connect my kitchen faucet and undersink water filter to my cold water line? - Home Improvement Stack Exchange
plumbing - which valve fitting / adapter combination can i use to connect my kitchen faucet and undersink water filter to my cold water line? - Home Improvement Stack Exchange
OATEY Under Sink Plumbing For Kitchens The Home Depot, 46% OFF
plumbing - which valve fitting / adapter combination can i use to connect my kitchen faucet and undersink water filter to my cold water line? - Home Improvement Stack Exchange
Oumeixing 1/4' Male to 3/8' Elbow Tube Quick Connect Reverse Osmosis Water Filter Fitting Pack of 5 JJ191970
OATEY Under Sink Plumbing For Kitchens The Home Depot, 46% OFF
plumbing - Reverse osmosis water saddle doesn't fit waste pipe - Home Improvement Stack Exchange
Can I use this 3/4 compression fitting with my in-line water filter? - Fine Homebuilding