Watts Aqualock 3/8" Tube Quick Connect Straight Valve. This valve is designed for quick and easy connections to poly or soft copper tubing, without the need for installation tools. It has a pressure rating of 150 psi and a temperature rating of 140 degrees Fahrenheit, ensuring durability and reliability. Made from high-performance polysulfone, this valve is resistant to corrosion and chemicals, making it suitable for use with copper, PEX, CPVC, and polybutylene pipes. It meets all National Plumbing Codes and is ANSI Specified, FDA, and NSF 61 Certified.