Proline Series 5/16-in x 5/16-in Compression Coupling Union

5/8-in x 3/8-in Compression Reducing Union Fitting

Proline Series 5/8-in x 3/8-in Compression Reducing Union Fitting

LTWFITTING 5/16 in. OD Flare x 1/2 in. FIP Brass Adapter Fitting (5-Pack) HF465805 - The Home Depot

Ace ProLine 3/16 in. D X 5/16 in. D X 10 ft. L PVC Vinyl Tubing - Ace Hardware

NPT-to-NPT Straight Coupling 1/2 in End B Diameter Threaded Fittings

LTWFITTING 5/8 in. O.D. Comp x 1/2 in. MIP Brass Compression Adapter Fitting (5-Pack) HF6810805 - The Home Depot

iFilters Light Whole House Bundle Dual-stage 3-GPM Gac Whole House Water Filtration System in the Whole House Filtration Systems department at

LTWFITTING 3/8-Inch OD x 1/4-Inch OD Compression Reducing Union,Brass Compression Fitting(Pack of 5) - Compression Fitting Ferrules

SharkBite 5/16-in OD Push-to-Connect Coupling in the Push to Connect Fittings department at

5/16-24 x 3/8 OD Bleeder Cap (10 Pieces): : Tools & Home Improvement

Proline Series 5/16-in x 5/16-in Barbed Splicer Fitting in the Brass Fittings department at

LTWFITTING 3/8-Inch OD x 1/4-Inch OD Compression Reducing Union,Brass Compression Fitting(Pack of 5) - Compression Fitting Ferrules