Profile: Zhejiang Valmax Valve Co., Ltd. is a manufacturer of industrial valves. Our products include ball valves, gate valves, globe valves and check valves. Cast steel pressure seal flanged check valve features flanged ends, butt-welding ends, swing type valve discs, pressure self-sealing type bonnet, and replaceable valve seats. The built-in structure is adopted for connecting the pin and valve disc, so there is no external leakage point.