dahl Valve Limited is a Canadian brand that designs and manufactures top quality plumbing and heating valves using American material. 100% North American with Lifetime warranty. Operating since 1952, dahl is best known for the industry-leading quality and selection of 1/4-turn mini-ball™ valves and continues to offer exceptional quality and service. Why dahl? - Lifetime warranty - 100% North American - Best Customer Service - Solution Oriented