 We are available in temperature classes L, P, R, S, T, and U specified in API 6A gate valves. Gate valves to be used in the 350℉ or 650℉ high temperature can be supplied on request. Gate valves in 3000psi, 5000psi and 10000psi working pressure, nominal size from 1-13/16" through 4-1/16", material classes from AA through FF, product specification levels (PSL) from 1 through 3 and performance requirement (PR) 1. SPECIFICATION: ●Manufactured and Tested in Accordance with API Spec 6A ●Simple structure and renewable gate and seat assembly. ●One-piece and double-acting gate with long service life. ●Both thrust bearings with large load capacity and composite rubber-plastic stem lip packing minimize operational torque. ●Bearing cap is provided with a grease cup to make it easy to inject lubricating grease in the field. ●Threaded packing gland allows removal of bearings and stem packing under line pressure. ●Both the bolted bonnet and modern bonnet seal ring provide simple structure and reliable sealing. ●The sealing surfaces of the gate and seat are hardfaced for wear and corrosion resistance. ●Wave springs are installed between the body and seat and between the gate and seat. The gate and seat still maintain a positive metal to metal seal under low pressure. ●Floating gate design requests the hand wheel to be backed off 1/4 turn after its rotation can go no further. |
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