PPSV500822W (1/4" QC) and PPSV501222W (3/8" QC) valves use push-fit technology. The quick disconnection makes installation easy without the need for any tools. This valve has a 1/4 turn from open to closed. It is primarily designed for use with a reverse osmosis bladder tank. Additional Details ------------------------------ Bullet point: RELIABLE RO CONNECTION: Engineered for efficiency, this reverse osmosis filter fitting enhances water purification by linking water tanks, 3/8 quick connect fittings, and 1/4 ball valves. Ideal for home improvement setups, it supports RO water systems, water softeners, and water pipes. Made to fit John Guest fittings and 3/8 OD tubing, it ensures smooth flow for reverse osmosis water tanks and RO filters, optimizing your water osmosis reverse system. Product description: PPSV500822W (1/4" QC) and PPSV501222W (3/8" QC) valves use push-fit technology. The quick disconnection makes installation easy without the need for any tools. This valve has a 1/4 turn from open to closed. It is primarily designed for use with a reverse osmosis bladder tank.