Profile: Zhejiang Onero Valve Co.,Ltd. manufactures valves, such as gate, ball, globe and check valves. We are an ISO 9001:2000 certified company. The cast steel body of our gate valve is designed to insure a wall thickness, which is more than the minimum specified by API standard 600. We take care in designing class 150 valve bodies, so that the elliptically shaped center section is free from intensified stresses in the critical area. The body of Class 300 is made circular in shape, as much as possible to minimize distortion even under extreme operating conditions. Inlet and outlet port dimensions conform to ANSI B16.5 pipe fittings. The welded-in type seat ring is standard to insure interchangeability. Stainless steel valves are designed and manufactured in compliance with API, ANSI, BS & other recognized standards, with the qualities to meet their requirements for industrial applications. Flange dimensions, temperature and pressure rating of valves conform to ANSI B16.5 & ANSI B16.34. Class 150 and 300 valves are normally furnished with a 1.6mm raised face flanged.