Supply check valve (curved) L-type check valve prevent pure water return check valve check valve quick-connect fittings specifications: one for an exceptionally wire, the other end of the pipes can be accessed by two points. Supporting the loaded 1812 membrane shell oh. The middle is a one-way pipeline. Suitable for RO membrane water production at to prevent the intrusion of water production. Replacing 2 nuts, installation effort worry! ~ - ~ (For RO membrane water production at) Quick Coupler Description: Our quick connector is with POM material manufactured by certified non-toxic harmless food. Health and safety. Widely used in parts of the water machine, water, food and beverage series. Use: quick connector to use faster, more convenient, more secure, and will gradually replace the ordinary plastic and nylon connectors currently on the market. Unique design: unique within the grasp of design drawn on the basis of practice to ensure that never leaks.