API 6D-2021 第25版增补1中英双语.docx

Date of Issue: April 2023 (Monogram Program Effective Date: October 2023) 发布日期:2023年4月(证书生效日期:2023年10月) Affected Publication: API Specification 6D, Specification for Valves, 25th Edition, November 2021 涉及出版物:API规范6D，阀门规范，第25版，2021年11月 Addendum 1 增补1 3.1.12: The definition of “date of manufacture” shall be changed to the following: The month and year of completion of factory acceptance testing. 3.1.12:“生产日期”的定义更改如下: 完成出厂验收测试的月份和年份。 3.1.18: The definition of “flow coefficient” shall be changed to the following: The volumetric flow rate of U.S. gallons of water per minute at a temperature of 60 °F (15.6 °C) passing through a valve and resulting in a pressure loss of 1 psi (0.0069 MPa; 0.069 bar). 3.1.18:“流量系数”的定义需更改为: 在温度为60℉(15.6℃)时，每分钟通过阀门的水（以加仑为单位）的体积流量，其压力损失为1psi (0.0069 MPa;0.069巴)。 4.4.2: The first paragraph shall be changed to the following: Full-opening valves shall be unobstructed in the fully opened position and shall have an internal minimum circular opening of the closure member and seat as specified in Table 1. 4.4.2:第一段修改如下: 全开阀门在全开位置应该是通畅的，并且在启闭件和阀座上应该有一个内部最小圆形通孔，如表1规定。 : The third paragraph shall be changed to the following: The design of the pressure balance hole, when equipped, shall have a ratio between the length of the hole and the hole diameter of less than 10 (L/D < 10) up to a maximum hole diameter of 0.5 in. (13 mm). 5.1.3:第三段修改如下: 压力平衡孔的设计，在配备时，孔长与孔径之比应小于10 (L/D <10)，最大孔径0.5 in。(13毫米)。 : The section shall be changed to the following: Bolting preload torques shall be calculated using an industry-accepted standard, such as API 6A, ASME PCC-1, or EN 1591, with a coefficient of friction on the threads and nut face, based on bolting material, bolting coating, and the type of lubricant applied. 5.1.4:本节修改如下: 栓接预紧扭矩应使用行业认可的标准(例如API6A、ASME PCC-1或EN1591)计算，螺纹和螺母表面的摩擦系数基于栓接材料、栓接涂层和类型润滑剂的应用。 To address variability in bolt stress by torquing, the theoretical bolt stress due to preload shall not exceed 70 % of yield at the allowable temperature. 为了解