... brass Brief introduct:1, GBC type ball valve is a manual adjustment stop valve, and suitable for bi- ... pipe of refrigeration and air conditioning.3, There is a good tightness with valve seat and sealing place.4, ... wide.5, GBC type ball valve is equipped with a secondary sealing cap , also can use wire to ... arc welding.7, The valve rod has anti-explosion design.8, With nodified PTFE sesling.9, It can avoid ...