ZHEJIANG AOSKER FLUID CONTROL CO., LTD. is a manufacturer integrating R&D, production and sales which provides one-stop service and solution for plumbing, heating and refrigeration systems of the global market. We are mainly specialized in producing safety valve, pressure reducing valve, automatic air vent, auto filling valve, combined air separator, assemblied wall mounting manifold etc. A series of valves are used in many lines of works, such as heating system, hotwater system and solar system