IAPMO Research and Testing, Inc. tests samples of fill valves from Xiamen Vib Industry & Trade Co., Ltd. to verify compliance with plumbing codes and standards. They also inspect the factory and quality assurance system through periodic surveillance. This listing certificate is valid from June 2015 through June 2016 and certifies that the listed fill valve models comply with standards for anti-siphon devices and can be installed according to code. The listing is contingent upon the company maintaining the same material, design, and quality standards and is not a guarantee of acceptance by local authorities.