Profile: J & M International Ltd. specializes in plumbing valves. We offer various jamflow ball valves such as needle valve, threaded swing check, threaded gate & globe valves, threaded & socket weld ball valves, 1 & 2 piece flanged ball valves, flanged swing check and flanged gate valves. The 1000 wog ball value is used for general industrial and chemical services. Torque can have values depending upon the temperature, pressure and line medium. It is less for high lubrication fluids, and more for dry gases and abrasive contents.