The four-way directional "T" shape stopcock has a 22 mm bore through all port adapters and the plug for good laminar flow. The flow enters from a common port at the bottom of the stopcock with selective distribution through three outlet ports in the sides of the body. A forth position totally occludes all four ports. Plug rotation is continuous.
-MIR version has non-magnetic electroless nickel plated beryllium copper wave washer
Last Updated: 2 Oct 2016