Valves Only is a trusted Gate Valve Manufacturers in USA. Technical Features Valves Only’s gate valves come with diverse construction and material options: Design Standards: API 600/602/603, API 6D, ASME B16.34, BS 1414, EN 1984 Face-to-Face: ASME B16.10 / EN 558 Flanges: ASME B16.5 (RF/RTJ), ASME B16.25 (BW), Threaded NPT/BSP Size Range: DN15–DN1200 (½"–48") ... https://valvesonly.com/product-category/gate-valve/