PA-E Reverse Osmosis RO 132 Replacement Faucet. Tankpro Pro 3.2 and 4.4 Reverse Osmosis Replacement Faucet. Aquasky Rot-4 Reverse Osmosis Replacement Faucet. PA-E Reverse osmosis ro 132 faucet is the standard faucet for all reverse osmosis undersink filters and reverse osmosis units. sturdy top performer that uses the proven, traditional up/down handle style. The faucet dispenses water with a downward push of the handle and locks open when the handle is pulled up. The spout swivels 360 degrees. The Pro-Flo is easy to install with preinstalled 1/4" tubing and complete accessory parts for installation The standard faucet is in the non air gap style.