[1 4 INCH QUICK CONNECT] Designed with a 1 4 inch port diameter for easy matching with common RO tubing. This valve fits many water purifiers faucets and direct drink machines with simple installation. [AUTOMATIC SHUT OFF] Built for most reverse osmosis water systems. When tank pressure reaches about 65 percent of supply pressure the valve automatically stops water feed to support stable use. [PRESSURE REDUCING CONTROL] Regulates pressure within a 0.2 to 0.25 MPa range to help maintain smooth . It reduces excessive speed and lowers the of leakage caused by unstable water pressure. [FILTER PROTECTION DESIGN] The integrated filter style design helps protect the RO system and supports cleaner operation. It keeps the purification setup running well in daily home water treatment use. [FOOD GRADE PP MATERIAL] Made of strong food grade PP in white with durable workmanship for long service life. The sturdy plastic body helps resist wear and supports reliable performance over time.