API603,H44W-150LB不锈钢旋启式止回阀 整体阀座，DN15-DN40
法兰，ASME 150， 300磅级，壁厚符合B 16.34
800磅级阀门，全流道，DN15-DN40
螺纹或承插焊接，ASME 800磅级
Integral Seat, 1/2-11/2", (15-40 mm)
Flanged, ASME Classes 150, 300, Wall Thickness To B 16.34
Class 800 Valves Full Port 1/2-11/2", (15-40 mm)
Threaded or Socket Weld, ASME Class 80