Like all Centek products, the Check Valve is Lloyd’s Register Type approved and recently Centek earned the ISO 9001:2008 Certificate of Conformance. Manufactured from the highest quality, ...

These devices were commonly called "9D" valves, but the new plumbing code doesn't mention this type of device at all; per section 603.5.10, boilers must be protected by either a testable double ...

Backflow prevention assembly testing is required by law. Clark Public Utilities recommends testing in the spring, just before the irrigation season begins. It’s quick and doesn’t cost much.