Saizi yakajairika yeAsi-standard tarisa mavharuvhu

The theTarisa vharuvhuTarisa vharuvhuTarisa vharuvhu? What is the difference between it and the national standard check valve? At present, the standard size of American standardinonyanya kufarirwa kuti iumbwe uye inogadzirwa zvinoenderana neAPI uye AME Liders, uye akawanda maAmerican miganhu mitemo yakajairika munyika. Zviyero zveAmerican zveAmerican Standard Vhezheni mavharuvhu zviyero: Dhizaini Dzakadzika: API / T 1223, APB / T 12221, TEM1 GB / T 9113, JB / T 79, HG / T 20592 Kudzvinyirira Test: APB / T 129.34, GB / T 12224