Product Description

This Smith-Cooper International 167L series inline brass vacuum breaker has lead-free construction for use with potable water and a female hose thread inlet connection, and is used to control backflow from a hose. The corrosion resistant vacuum breaker valve body is constructed of ASTM International B-584 C89550 brass alloy, which contains 0.1 percent lead for a "lead free" designation. Its inlet connection is female hose thread for connecting to a male hose threaded fitting, and its outlet connection is a male hose thread. A spring loaded acetal copolymer (POM) piston prevents backflow and a breakaway screw locks the vacuum breaker onto the fitting to resist tampering. The valves maximum pressure is 125 pounds per square inch (gauge) (psig) for water, oil, and gas (WOG) at 180 degrees F. This vacuum breaker is CSA International approved and meets NSF International/American National Standards Institute (NSF/ANSI) 61.8 standards and complies with California Assembly Bill 1953 (AB1953), which limit the amount of lead in plumbing fixtures that come in contact with water intended for human consumption. This vacuum breaker is a type of check valve that prevents backflow from the hose and is for use in various water plumbing systems.Check valves have two ports and restrict the flow of fluids and other loose materials through a pipe or passageway to one direction. Flow enters through one port and exits through the other, closing when flow reverses or stops. Two common types of check valves are ball cone valves and swing check valves. A ball cone valve utilizes a spring-loaded ball seated against a cone-shaped interior surface to stop the flow of fluid in a forward direction, and a swing check valve has a movable disc on a hinge to block reverse flow. Check valves are rated by their cracking pressure (the minimum upstream pressure required for the valve to operate), and they are used in various water, gas, air, and steam lines.Smith-Cooper International distributes pipe, fittings, and valves under its SCI trademark and manufactures valves under the Sharpe brand. The company, founded in 1993 and headquartered in Commerce, CA, meets International Organization for Standardization (ISO) standard 9002.