Constructed of 316 stainless steel, SK series offers positive, quarter-turn shutoff for general process and control applications. Spring-loaded seats and floating ball provide leak-tight integrity, while low-torque operation facilitates manual operation. End connection choices include gaugeable tube fitting, NPT and ISO pipe, and  O-ring face seal. Sizes are ¼ and 3/8 in., 6 and 8 mm, and valves are rated for working pressures to 6,000 psig and temperatures from -40 to +302°F.For more information,please visting http://www.bossgoo.com