The Champion GA-100 1" Brass Flow Control Valve from Champion irrigation is made from high quality brass and installs easily on a 1" line. Because of its durable brass construction, this valve is ideal for outdoor installations. Champion irrigation has been in business for over 75 years. They manufacture high quality brass valves, couplers and sprinkler heads. They remain viable due to their durable line of products they consistently serve up to their customers.