《API 594-1997 Check Valves：Wafer%2CWafer-Lug%2Cand Double Flanged Type》.pdf

Check Valves: Wafer, Wafer-Lug, and Double Flanged Type API STANDARD 594 FIFTH EDITION, NOVEMBER 1997 COPYRIGHT 2000 American Petroleum InstituteCOPYRIGHT 2000 American Petroleum Institute Information Handling Services, 2000Information Handling Services, 2000 COPYRIGHT 2000 American Petroleum InstituteCOPYRIGHT 2000 American Petroleum Institute Information Handling Services, 2000Information Handling Services, 2000 Check Valves: Wafer, Wafer-Lug, and Double Flanged Type Manufacturing, Distribution and Marketing Department API STANDARD 594 FIFTH EDITION, NOVEMBER 1997 COPYRIGHT 2000 American Petroleum InstituteCOPYRIGHT 2000 American Petroleum Institute Information Handling Services, 2000Information Handling Services, 2000 SPECIAL NOTES API publications necessarily address problems of a general nature. With respect to partic- ular circumstances, local, state, and federal laws and regulations should be reviewed. API is not undertaking to meet the duties of employers, manufacturers, or suppliers to warn and properly train and equip their employees, and others exposed, concerning health and safety risks and precautions, nor undertaking their obligations under local, state, or fed- eral laws. Information concerning safety and health risks and proper precautions with respect to par- ticular materials and cond