Everbilt 1/4 in. x 1/4 in. Comp Brass Coupling 800799 - The Home Depot
Amazon.com: PureSec Push to Connect 1/4 inch Tubing Use Plastic Inline Straight Union Connector Quick Connect Fittings for Reverse Osmosis System (10, 1/4") : Everything Else
Charlotte Pipe 1-1/4 in. PVC Schedule 40 S x S Coupling PVC021001200HD - The Home Depot
Homewerks Worldwide 1-1/4-in Schedule 40 PVC Coupling in the PVC Pipe & Fittings department at Lowes.com
Charlotte Pipe 1-1/2-in Schedule 40 PVC Coupling in the PVC Pipe & Fittings department at Lowes.com
Amazon.com: LG Electronics 4932JA3014A 1/4-Inch Compression to 5/16-Inch Refrigerator/Freezer Plastic Quick Connect Water Line Coupler : Appliances
Amazon.com: PureSec RO Fittings Y Type 1/4 inch Tubing OD Use Two Way Water Line Splitter Quick Connect Tube Fittings Push to Connect Plastic Connectors for Water Filtration System(Pack of 10) :
In-line Plastic Shut-Off Valve with Barb 1/4"x1/4"
Charlotte Pipe 1-1/4 in. PVC Schedule 40 MPT x S Male Adapter PVC021091200HD - The Home Depot
Hose Repair Joint Garden Hose Connector Inch Pipe Coupler Stop Water Connector Repair Joint Irrigation System - Temu
1/4" 1/2" 3/4" 1“BSP Male Connection Hex PVC Pipe Fitting Adapter Coupler Reducer Water Connector For Garden Irrigation System - AliExpress
Fridge Water Pipe Straight Connector 1/4" To 1/4" With Built In Push Fitting 6mm 5060282121898 | eBay
Amazon.com: JoyTube Plastic Hose Barb Reducer Pipe fittings, 1/4" to 1/8" Hose ID Connectors Joint Splicer Mender Adapter Union Boat Water Air Aquarium O2 Fuel (Pack of 3) : Industrial & Scientific
Equal PT 1/4 (12.5mm / 6.6mm) Straight Push Fit Tube Union Connect Fittings + 5 Lock Clips RO Reverse Osmosis Pack of 5: Amazon.com: Industrial & Scientific
1/4" Tube Outer Diameter Plastic Push Lock Union Tee Tube Fitting Non – compressor-source
1-1/4 in. Tee PVC Fitting (Box of 100) — FORMUFIT Direct
Hose connection made of plastic 1/4 inch / 4/6 hose connection | Osmosis hoses, couplings and taps | Piping & construction
2~20PCS 1/2"3/4"1"Inch PVC Male/Female Thread Equal Path/Reducer/Bushing Joint Fish Tank Garden Irrigation Water Pipe Connectors - AliExpress
Pipe Fittings - PVC Slip x FIP Adapters1"
2~20PCS 1/2"3/4"1"Inch PVC Male/Female Thread Equal Path/Reducer/Bushing Joint Fish Tank Garden Irrigation Water Pipe Connectors - AliExpress
Amazon.com: PureSec 1/4 Water Line Fittings 1/4 Push to Connect Fittings for 1/4 OD Tubing(1/4 Ball Valve+1/4 T fitting+Y+L+I, Pack of 10) : Industrial & Scientific
Compression Tube Fittings - Poly Male Adapters 1/2" x 1/4"
Amazon.com: PureSec RO Fittings Y Type 1/4 inch Tubing OD Use Two Way Water Line Splitter Quick Connect Tube Fittings Push to Connect Plastic Connectors for Water Filtration System(Pack of 10) :
PVC Water Supply Pipe 1/2" 3/4" 1" 11/4" 11/2" 2" Male Threaded Fittings Adapter | eBay