Brass distribution and control valve (radiator vent) for heating line system. Male thread 3/4 or 1 inch, pipe size 22, 26mm We are BV certified manufacturer!MXF 3/4 inch or 1 inch main flow, 2-way or 3-way, 4-way distribution and control stop valve with plastic switch for heating pipeline systemCW617n Brass body and brass stop, nickle plated main body,Plastic switch (handle)2 WAY, 3 WAY, 4 WAY ...