本推荐规程（RP）为ASME压力等级150、300、400、600、900、1500和2500的厚壁（API 600和API 594型）碳钢、铁素体合金（高达9%Cr）、不锈钢和镍合金闸阀、截止阀和止回阀提供了修复指南。本RP中包含的指南适用于法兰和对焊铸造或锻造阀门。本RP不包括用于转售的旧阀门或剩余阀门的修复或再制造。本RP的唯一目的是为最终用户（业主）阀门的翻新提供指导，以便在业主设施中继续使用。根据本RP重新修复或再制造的阀门可能不符合新阀门的API标准要求。

This Recommended Practice (RP) provides guidelines for reconditioning heavy wall (API 600 and API 594 type) carbon steel, ferritic alloy (up to 9 % Cr), stainless steel, and nickel alloy gate, globe, and check valves for ASME pressure classes 150, 300, 400, 600, 900, 1500, and 2500. Guidelines contained in this RP apply to flanged and butt weld cast or forged valves.This RP does not cover reconditioning or remanufacturing of used or surplus valves intended for resale. The only intent of this RP is to provide guidelines for refurbishing an end user’s (Owner) valves for continued service in the Owner’s facility. Valves reconditioned or remanufactured to this RP may not meet API Standard requirements for new valves.