High Flow Rate Inline air gap with 1/4-inch FIP or 1/2-inch Thread Inlet and 5/8-inch Compression Fitting or 3/-inch Thread Outlet. (AG150-002, 211212, GAP-A-FLO) - Amazon.com
DLA-G Airgap 1.5" PVC SCH40 - Airgap 1.5" PVC SCH40 - 1/2" ID Barb – Fresh Water Systems
Eco-Tech G-175 DLA-G15 Multipurpose Stand-Pipe Airgap, (Hub x Fipt) for all Schedule-40 DWV Stand-Pipes Reverse Osmosis 'RO' Water Softener Appliances - Amazon.com
Universal Triple Air Gap for Water Filters with Three 3/8-inch OD Ports (AG100-003) - Amazon.com
Polished Chrome Air Gap RO Faucet SP-FR100-AB - Only $70.16
Air Gap Types
Universal Dual Air Gap with Dual 3/8-inch OD Ports (AG100-002, 34800) - Amazon.com
Polished Chrome Air Gap RO Faucet SP-FR100-AB - Only $70.16