1、ASME A112.4.14-2004Manually Operated,Quarter-Turn ShutoffValves for Use inPlumbing SystemsAN AMERICAN NATIONAL STANDARDThe American Society ofMechanical EngineerswhAg/ENo roproduction or networking permitled without liconso from IHSNot for RosaleFOREWORDIn 2001,the American Society of Mechanical Eng
2、ineers received a request for the developmentof a standard for ball valves that would normally be used in residential hot and cold waterplumbing systems.This request was approved by the ASME A112 Standards Committee andassigned to a new project team(PT 4.14).The IAPMO IGC 157 entitled Ball Valveswas
3、 used as the base document for this Standard.While in development,the ASME project team broadened the title and scope to cover quarterturn shutoff valves.This Standard was developed with the hope that due consideration should be given for adoptionof these provisions by model,state,and local codes.Su
4、ggestions for improvement of this Standard will be welcomed.They should be sent to TheAmerican Society of Mechanical Engineers;Attn:Secretary,A112 Standards Committee;ThreePark Avenue;New York,NY 10016-5990.This Standard was approved as an American National Standard on May 25,2004.No roproduction or notworking permitled without liconso from IHSNot for Rosale
